You can also cast mage armor and get a +3 to AC. Edit: Alright just looked at mage armor and found out this doesn’t work. This is because mage armor doesn’t stack as the the wording is “makes your AC equal to 13 + dex modifier”

Clockwork sorcerer also gives armor of Agathys and other abilities that support the spell that you can use in rage

@@Vawk20 Yeah, but you need at least two levels to swap out the previous spell. Hexblade Warlock benefits you way better with just one.

@@MadnessOpus True but a nice DM might let you swap at level 1.

​@@plasmagamer1771 Mage Armor makes your AC 13 plus your Dex mod. It doesn't stack with Unarmored Defense, which makes your AC 10 plus your Dex mod plus your Con mod.

That's really cool, I'd limit it to verbal component spells, but it totally makes sense

​@@Grooveworthy I don't get why someone would do that, if the spell is casted before they go into a rage and the quid is they need to be able to sing (verbal component each turn) in subsequent turns if raging to be able to mantain concentration, this ability is already adding a constant need foor verbal component after the casting, that's going to bring with it a lot of limitations for the raging barbarian to consider that will begin immediately when casted and will remain for as many turns after the casting as they can hold concentration. As I see this, limiting this to only spells that already had a verbal component does nothing for balancing a HB mechanic that's already well balanced, but it would only take away from the spells the barbarian can concentrate on and the possibilities at their disposal

Toss it onto a weapon, like a fluted haft of an ax so it whistles with each strike. Or a singing bowstaff that whistles through air. Each strike can imbue a bardic die to add spell damage to the strike. Let's you burn bardic die since you won't be using them during rages.

Simon singing Cheers in Adventure time lol

Brilliant

This is cool, but more a monk with barbarian than a barbarian with monk though. I think the barbarian multiclass is better for a monk than the monk multiclass is for the barbarian.

Wouldn’t it be called a Bonk?

Oh, god... It's the WokeBarian.

Barbarian/Peace Cleric is Bender from Futurama saying: The whole world must learn of our peaceful ways! By force!!

Jessie Peace, the Peace Domain Barbarian. He follows the path 0f non-violence up until the point when he just looses it. He was not as famous as his brother Warren.

So...quarter damage?

Danger sense and evasion combo, especially has a totem bear Barbarian, is also something to not look over.

@@lovelessissimoit’s already labeled that it’s half or no damage with other rogue abilities. It’s how we rule it in our games. Currently I’m playing a rogue barian but it’s much more rogue than barbarian.

i love it!

@Al Jean I’m assuming “PO” is “parole officer” here. I love the “Random Axe of Kindness” 😊

@Al Jean Hey, the Greek Gods were mainly worshipped out of fearing their wrath. Zeus, Apollo, Hera, Hades, None of them were nice by human standards. I say a Barbarian in forced divine servitude is very Greek.

Um, actually, there's more to it than just one feature that comes with the no-armor requirement... "While raging, you gain the following benefits if you aren't wearing heavy armor: - You have advantage on Strength checks and Strength saving throws. - When you make a melee weapon attack using Strength, you gain a bonus to the damage roll that increases as you gain levels as a barbarian, as shown in the Rage Damage column of the Barbarian table. - You have resistance to bludgeoning, piercing, and slashing damage."

To be fair... You're right about Totem Bear still working regardless of armor or no armor.

@@guyman1570 I'm glad you caught that. I was coming to let you know.... So... Umm.... Carry on, I suppose.

@@guyman1570 Heavy Armor also disables Fast Movement, but other than that it could work. You still get Danger Sense and Reckless Attack, but no bonus damage or advantage on Str rolls while raging. So it could work with an artificer multiclass perhaps, if they buff before combat.

Exactly and Absolutly!

Yup, Martial Arts is mostly there to let you use Dex on attacks when it normally can't and what's the Normal stat? STRENGTH!! So go ahead and start using a Great axe and flurry of blow with Str. If for any reason you lose the axe, then you got access to your fists to go all reckless punching.

@@ruga-ventoj - Martial Arts is also there to let the bonus action unarmed strike(s) not suck, including the 2 from flurry of blows or 1 for free. So it's important for all monks, otherwise flurry of blows would be 2x 1+str damage, as well as the benefit you mentioned for attack rolls. Correct that if your weapon is good enough and you're attacking with your preferred stat already, you don't want to use it on your Attack action, though. But yes, well spotted @Playlist B that Flurry of Blows only requires that you take the Attack action, not that you attacked with a monk weapon or unarmed. Interestingly, the free bonus action to make one unarmed strike does depend on making an unarmed strike or using a monk weapon during your Attack action, so you can't use it with grapple/shove or with a non-monk weapon, only flurry of blows.

Works great for Drunken Masters who don't need wisdom for their feats and can make 5 bonus attacks with Intoxicated Frenzy

The rules for monk actually say you CAN use your dex modifier instead of your strength mod. You don't have to. Also, warhammers are covered by kensei monk if I'm not mistaken. That's a brutal combination.

How did you completely whiff the opportunity to say Barbonk? XD

A Totem Warrior artificer that crafts their own totemic machines inhabited by nature spirits sounds like an incredible concept

*Bartificer

YES thank you for saying this

Barbarians break stuff. But the Artillerist likes that idea, and the roving cannon isn't bad as you're raging. Thieves' tools proficiency is underrated for breaking and disabling devices well. Armorsmith with the thunder gauntlets isn't bad at all, and works kind of nicely with Path of the Ancestral Guardian to get more than one target to focus on you and make one of them do less damage if they go after your allies. Grab Sentinel, have some tanking fun.

Yeah, honestly Artibarian isn't a bad combo at all! Unlike something like the Druid or the Bard, Artificers are half-casters specifically. They CAN spellcast, but spellcasting isn't the main focus. Not to mention that a good many of Artificer class and subclass features don't specifically require spellcasting. Except Alchemist, but I don't think that it is a good Artificer anyway, so I'm gonna ignore that. What boils down to a good Barbarian subclass or not is how core class/subclass mechanics interact with Rage, because Barbarians are all about that RAGE. Full spellcasters, even Druids, I think generally do not mix. You are meant to cast spells. Rage specifically prevents you from doing that. Thus, better places to look are the classes that don't require *spellcasting*. Artificer is a great example; it has other uses for spell slots aside from spellcasting, and its focus is more on magical items, not spellcasting. However, the spells it has access to are also great forms of utility. Personally, I think Artillerist and Battle Smith are great picks, but Armorer is also a good choice, too.

You don’t even need Kensei, the beast barbarian uses simple martial weapons in which you are proficient. Even if you don’t count the beast weapons as included in the simple weapons a monk is proficient in (because they are proficient in all of them) dedicated weapon allows you to use any weapon you are proficient with as a monk weapon as long as the weapon doesn’t have the heavy or special property

,the problem is i cant be good whit 4 stats. You just cant

@@yuvalgabay1023 and that is why it is not an S, but maybe a B instead of B-

@@yuvalgabay1023 you don't need to be amazing with all 4 stats, you just need to be good enough to qualify for the multiclass. With point buy and a race with bonuses to 2 of the 4 stats you can easily get a 16 in 1 stat and 14s in the other 3, which is absolutely enough to make the combination work

@@brazen_helm its will be workble but i have the feeling you will be not so good barb and not so good monk .

I gave mine lightning lure, booming blade, shield, and mage armor to use before raging. It worked fine until he got angry 😂

That's pretty cool. Can cast Aid too, right?

Also, Bear Totem resistances apply when you are in Heavy Armor RAW. You just miss out on the Bonus damage and Advantage on Str checks

@@VanBurenPhilips Yes, it's an Artificer spell.

@@derekseaton4412 This checks out. Two of the effects at that level say if you aren't wearing heavy armor. This ability does not say that so does in fact work when in heavy armor. I know you know. Just confirming it to anyone else that reads this

Infiltrator barbarian

I would love it if it worked with agile parry... Unfortunately to get the +2 AC you need to wield a weapon RAW and your DM can reasonably argue that you can't wield your claws because you don't wield your hands (Same reason claws don't work with dueling fighting style)

I think what they meant was they don't count as unarmed strikes, but you're right about them counting as monk weapons.

Came here to say this

Beast Barbarian 6/Kensei Monk x is actually pretty strong. Currently playing in a campaign with one and you can get up to 35ish DPR (not gonna list full calcs here). But the secret is - dedicated weapon / kensei weapon to get a 1d8 weapon to activate monk features with your attack action - path of the beast claws for an additional two 1d6 attacks with your attack action - martial arts / flurry of blows for either one or two 1d4 bonus attack attacks - all attacks get your str mod and rage bonus - all attacks at advantage because of reckless attack it really does peak right at level 9/10 overall and you mainly gain versatility/extra ki points with the rest of your monk levels, but once you have 3-4 ki points, you can potentially make 5 attacks a turn for an entire combat and that's just plain cool. of course, you do nothing besides this but still battleaxe claw claw kick kick is an awesome turn

My girlfriend played a Beast Barb/Monk in a one-shot I did, it was level 5, so 3 levels barb and 2 levels Monk and she loved it. We didn't think it would do so great, but it exceeded expectations. Not sure how well it would work at higher levels, but lower levels make the Flurry of Blows with Reckless super cool

Wait, what? I need details here!

@@JoelCSabo Since you take half damage to almost anything while raging, having 5 HP basically means 10 HP

You can also do this with Monk Way of Mercy healing. Keep punching and then occasionally heal yourself also with punching.

@@denodagor that tracks. I thought I had missed some glorious synergy somewhere that let you actually heal double while raging. Would've been irresponsibly OP. Thank you!

​@Joel Sabo It's not illegal to use LOH during a rage, but if you're not attacking, you'll lose the Rage at end of turn.

Throw in a periapt of health, Eldritch smite, Mirror image, hell, even try genie patron for out of battle casting and non-concentration flight!

Ok, I'm sold on this one.

Honestly might be a great meme format.

Fucking thank you. The fact that everyone says you have to have GWM to me is just insane. I understand the numerical advantage it gives you but dealing damage is not the only point in the game.

The thing is, a melee martial build that isn’t doing good damage isn’t really providing anything in combat. They don’t generally have any features that help them do anything else. Don’t say tanking, there’s maybe half a subclass that can actually fulfil that role, and it’s still very limited. If you don’t want to build around combat, that’s cool, but then there’s no point discussing the combat effectiveness of multiclass options.

@@johndevlin9225 A Barbarian running great weapon master spends a valuable ASI or Feat and prevents them with point buy or standard array from maxing out their AC. A Barbarian running a shield can get a decent AC, and you can use subclasses like the Ancestral Guardian to reliably tank and draw aggro. A Barbarian when they max their Constitution and draws aggro is insanely durable and one of the best tanking options out there. There's more to melee fighters than maxing out damage.

@@TheHandgunhero Ancestral guardian was the half a subclass I was referring to, which enables you to gain fairly good control of one enemy as long as you are raging. If there are multiple enemies, or you don’t have enough rages to last the day, or the enemies are at a distance, you have basically no power over them. Still, it is probably the best tank in the game (which says more about the quality of the other tank options). As for drawing aggro, what do you mean by that? Being a very durable target that doesn’t do a lot of damage sounds like the enemies will walk past you and attack your allies that are actually a threat. And if you don’t have a reach weapon because you’re holding a shield then you aren’t even threatening a large area with your one opportunity attack. As for maxing out your ac, do you mean with unarmoured defence? How many ASIs do you think you’re getting? Because by wearing a breastplate (and there’s no reason for a barbarian not to) and having a +2 dex you have an ac that won’t be beaten unarmoured until you have a combined dex and con mod of +7, and that’s gonna take until at least level 16 if you want to max your primary ability score first, and that’s assuming you take no feats at all. I don’t see how a barbarian that focuses all their ASIs into maxing con and carries a shield is a tank at all. Sure they can take a lot of damage, but they have no tools to prevent their allies taking damage. They have a single opportunity attack, and that’s it, unless they’re the one subclass with any kind of ability that helps with this.

@@johndevlin9225 "drawing aggro" means convincing a key enemy to attack you instead of someone else. Usually by making it a worse option to attack someone else, usually by imposing disadvantage on attacks against anyone else. Like a Battlemaster's goading attack, or Ancestral Protectors which is disadvantage *and* resistance to the attack. (That only triggers on your turn, not op attacks anyway, but fair point about not controlling a large area to stop enemies with Sentinel, or just the threat of damage.) Of course it's not "aggro" like in an mmorpg like WoW; in D&D it's just a narrative thing, not mechanically forcing them to. Even the Compelled Duel spell is only disadvantage against other creatures, and only force a Wis save to move more than 30 feet away from you.

Came here to say this. Definitely B or A tier

You can use multiattack while wildshaped too. Any creature that doesn't already get multiattack becomes crazy powerful, and it can even help the ones that do, since most say 'you make one attack with (strong ability) and one with (weaker ability)' but if you have multiattack from barbarian you can make two with the strong ability. This also applies to a fighter 11 druid 9 for what may be the craziest 20th level multiclass.

Better sure but you lose two levels of druid and you aren't able to rage and wildeshaoe in the same turn. It's really not that great of a multiclass. Treantmonk's Temble is currently making videos about wildeshape and explains all of that pretty good

@Not- A-Theist You can rage and wildshape in the same turn. Moon druid says you *can* use a bonus action to wildshape instead of an action, rather than saying wildshape *becomes* a bonus action for you. Because of this neat little wording, you can use your action to wildshape and your bonus action to rage.

​@@The_Crimson_Witch true, but if you use your action to wildshape, unless you've leveled into Barbarian 15, you've just used both your action and your bonus action, which means you've lost the chance to attack. You then have to pray the enemy isn't smart enough to steer clear of you/not run away from you so you can either take damage or get an opportunity attack. Otherwise you lose rage.

And it just sounds fun! I'm playing a wild magic barbarian with a homebrew magic mushroom tea kit. Whenever I drink the mushroom tea, I roll a d12 and a magical effect happens. Some are from the alchemist elixirs and the rest are from the wild magic sorcerer table.

Agreed

Mechanically it doesn't synergise, but what actually bumps it to C is the Armourer Artificer. You can use Thunder Gauntlets with reckless attack and strength, you can wear armour as a Barbarian so long as it's not heavy and boost your AC, you get infusions which give you useful utility if needed and you can draw aggro better without needing to be an Ancestral Guardian. You can even get the infusion that gives you resistance on Psychic Damage as a Totem Warrior.

@@TheHandgunhero for AC and utility purposes, I couldn't agree more. The only problem is that the weapons can't be combined with the awesome feats like GWM, so it lacks a bit in the damage department.

@@TheHandgunhero Thunder Gauntlets aren't doing a whole lot, though, given that they're just d8 weapons. You're trading much better weapons for the pseudo-taunt ability.

i like this one, the arms say you *can* use your wisdom modifier in place of your strength or dex, so you can still use your strength and get to rage bonus and reckless attack with reach, without nice DMing, and attacking 4 times per turn with at level 8, a 1d6 +4 from strength and a +2 from rage on every attack dealing force damage could be pretty decent (this would be a barb 2 monk 6 i think) going wisdom with DM buy in gets you a really good AC compared to the strength build but you can of course still get a 15 AC on the strength build with the mountain dwarf and still have a 40 foot move speed once you hit monk 5 I would still agree that it's probably a B tier build though

I like the general idea,, but then I realise you need a bonus action for Astral Arms, then another bonus action for rage. :(

@@konradianknight true, but astral arms is 10 min duration atleast

@@menarg1549 Oh yeah I forgot about that, I was wondering if you could pre-activated one.

Colby has a great mercy monk/barbarian build over on d4 deep dive that is self healing to boost the rage damage mitigation

Note that Beast weapons are simple melee weapons, which is why the claws count as a monk weapon

Love the idea, as a turtle strength monk to use reckless attack

There is a funny(but very specific) build with Barb(beast level 6 with high jump) and Monk(level 4 slow fall), where you do constant high jumps with a grappled enemy to knock them down and prone, then keep attacking. 1) Grapple target(cost 1 "attack"). 2) Spend your move to make a high jump. Make a Strength(Athletics) check and add that number to your jump height(should easily be over 10 in total). 3) As you and your enemy fall down(1d6 bludgeoning damage for every 10 feet), negate any fall damage you might take by using your reaction and Slow Fall feature(reduce damage by 5x your monk level, so 20). 4) If your enemy takes any damage from this, they are knocked prone, while you still hold on to them(prone requires half your max movement to stand up. Grapple means speed is 0, so no movement points). 5) Your enemy is now prone and you can use your second attack of the round to strike with advantage. 6a) On the enemy's turn, they can use their action to try to stop your grapple(they have to beat you in an athletics contest). If they succeed(unlikely), they are no longer grappled, but are still prone. As a result, they can only crawl, or stand up, using half their movement. 6b) Or the enemy can choose to attack you while still grappled and prone. This gives them disadvantage against you. 7a) If the enemy has escaped, just go back to 1) and start over. 7b) If the enemy is still grappled, you can do a dive bomb again(dealing a bit of damage) and then attack twice. Other benefits to this build. 1) You get to use a Tail(beast 3) to use as a defensive tool in situations where you want to spend your reaction on avoid direct damage rather than grappling(add 1d8 to your AC). 2) You can also choose to spend your reaction on Deflect Missiles. In both cases, it gives you a way to avoid powerful attacks. 3) You can jump high and grapple a flying creature, causing their speed to get reduced to 0, meaning instant falling. 4) Your Martial arts attack bonus action and Flurry of Blows can benefit from Rage damage modifiers. 5) Set up a wrestling competition with your party's Bard as your hypeman and ring announcer.

@@Wintermute909 You can, but it requires your bonus action and you can only do it once per short rest.

Solid argument for Alchemist actually being useful.

Yes!

The Jekyll and Hyde

@@redbeard5939 I was actually thinking more like a gym bro frat jock who knocks back his bless-in-a-can and then crushes the can on his forehead, but that’s a cool idea too.

Add Hexblade's curse and relentless curse to that😉

I think 11 druid for 6th lvl spells and 9 barbarian is optimal I believe 9 is brutal crit right?

They didn't mention that moon druid can use spell slots to heal itself. I don't believe that feature counts as casting a spell so it should be available while raging.

@@donovandawson9190 slightly up for interpretation just because brutal critical says you can roll extra “weapon damage dice”. So depending upon on your dm they might make it only count for weapons. But if you have a nice dm it should work

In the last campaign I played it, one of the others players was a Rogue-Barbarian. Reckless attack to get advantage, drop an assload of sneak attack dice, disengage and pick your next victim.

That is only if you're raging every fight. Multiclassing with fighter will allow you to save rages as you don't need to rage to be useful in a fight, so you can save your rages for basically an anime super sayan moment. Or if you're absolutely insane like moi, you find a way to make a barbarian archer with rogue levels. I'm not using most of my class features in most fights, but I'm finding that I really don't need to.

How does that apply exactly? The Zealot barbarian adds radiant damage to their attacks, I wonder if the Undead feature there would allow you to add radiant as well as necrotic damage.

@@thesnep4757 Yes, you could also add radiant. (Or more necrotic, if you chose that for your Divine Fury.) > undead warlock 6th: Grave Touched > > In addition, once during each of your turns, when you hit a creature with an attack roll and roll damage against the creature, you can replace the damage type with necrotic damage. While you are using your Form of Dread, you can roll one additional damage die when determining the necrotic damage the target takes. So you could replace the slashing damage from your greataxe with necrotic, and roll an extra 1d12. It's similar to a crit for free every turn, for the base weapon damage, making a greataxe (1d12) pull way ahead of a greatsword (2d6) even before you get Brutal Critical.

Similar vein: I had an Ancestral Guardian Barbarian/Rune Knight Fighter I played, and it was AMAZING! The power I felt when I played that character was fantastic. In one session, I two-round soloed an Abeloth

@fightingfalcon777 Yeah man! It's a very strong combination. Super fun to play!

@@chrisg8989 hell yeah! Rage + Giant’s Might just allows you to wreck house

@@chrisg8989 What was the Level breakdown for your PC?

@fightingfalcon777 4 Zealot, 16 Rune Knight. I'm currently level 6. But my plan is: 1-3 Barbarian 4-8 Knight (Extra attack) 9 Barbarian (Feat) 10-20 Knight. I'm sure this isn't optimal. But I wanted to get Raging Giants Might right away. Being a large sized Rage monster and Rolling 4D6 every turn on my first attack is very fun!

No Versatile weapon can be used with GWM as there are no single handed Heavy weapons.

@@keeganmbg6999 Technically you can still use GWM with a non-heavy weapon, but you lose its main benefit of the -5 to attack to gain a +10 to damage. You would still get the bonus action attack when you get a critical hit, something I constantly keep forgetting I can do...

4 Barabarian rest of the way paladin is sick. The zealot smiter is fun thematically and strong.

This lack of imagination and midmaxing insistence makes me a sad boi

@@canis2020 understand that the purpose of this video isn’t to flex their creative muscles and rp chops. They have them and they are setting them aside to mechanically analyze these

The fiend with the temp hp, armor of agathys, pact of the blade...

Just cast armor of agythis before combat, hexblade curse for more damage / fiend for the temp hp after each kill

I kinda like it but i just dont see it as very synergistic. Even just hexblades curse can be ok. But it isnt very potent and i hope it isnt done before extra attack and delaying actionsurge or whatever you are speccing sounds frustrating. It isnt bad tho. A critfishing build with a d12 weapon and halforc perhaps.. but there are better ways to do this :( I absolutely love the flavor. Demonic rage. It is close tho but you just dont have any high slots for the agathys before tier 3-4 and well at that point things hits for big dice anyway. Tier 1 play against kobolds and goblins with d4 damage is kinda the peak for it even if you build around it which is a mechanically selfinflictes arrow to the knee. But a funny one.

@@LordNerfherder you dont need high level slots, even just a 5 level dip gives you an extra +40 temp hp(two castings) dealing extra cold damage when hit and a magical +1 weapon. This is before a subclass that can massivly boost your power/survivabiliy. Or you go main warlock that can enter a rage when in melee Try it out one time, go barb 5/6+ warlock 3 is super fun and powerfull

Spell utility like that is nice on the Barbarian. As a class, I find the Barbarian tends to suffer disproportionately in out of combat applications, so having spells to do things is nice.

Just finished a campaign using this combo and yeah, it was a lot of fun

Besides being a lot of fun thematically, Ancestral Guardian is also really a whole different beast when it comes to multiclass potential, because its actually entirely viable to do a Ranged, Dex-Based Barbarian with it, which pairs very well with a wide variety of ranged-focused as well as pet-having multiclass options.

Play a Tortle, go Beast Barbarian and Artillerist Artificer, attach the cannon to your shell, and now you're the pokemon Blastoise. At Barb 5/Art 3 and you attack 3 times and can shoot a distant enemy with Hydro Pump or hit in a cone with Scald. It's a beautiful thing that I am still waiting to play. 😁

This is why you should usually go to level 5 in one class to get Extra Attack before multiclassing, for most multi-class builds. Otherwise you get left behind when the party hits level 5. Being late to the party with Extra Attack for more than one level is either bad planning or a tradeoff where you'd better have gotten something really good in exchange, hopefully long term not just being OP in those early levels. (e.g. if you choose your starting class for saving throw proficiencies, but don't want to go past 3 in it, then yeah you have a rough 3 levels in exchange for a somewhat more optimal build later if you didn't switch after 1 or 2 levels in your starting class, to come back later after you get Extra Attack from the class you plan to get to 5.) But in this case, would you want Str+Con save proficiency vs. Str+Dex? I guess it depends how many poison monsters your DM uses, but Dex saves are really common. Although monk evasion gives you half damage all the time, it's no damage if you pass on saves for half, so the absolute damage reduction is still half the AoEs damage whether you have evasion or not. e.g. on a 30 hp fireball, making the save leaves you 15 hp higher than not making the save, whether or not you have evasion. Proficiency + advantage from Danger Sense is good for reliably making saves. And many con saves are against poison, but monks are immune to poison at 10th level, so con save proficiency is significantly weaker. So I'd have started Monk, then dipped at most 1 level of barbarian for rage after monk 1 or 2, * then continued to monk 5 * then get to barbarian 3 if that's where you're aiming to stop * then continue with monk. But at least as a monk they can make an unarmed strike (or two with Ki for Flurry of Blows), so it's still 2 attacks.

@@TheLegendaryLegacy The bonus attack is an Unarmed attack. If you are wielding anything that is not a Monk weapon, armor, or a shield, you loses your Martial Arts benefits. Meaning your Unarmed attacks become a 1+strength+other modifier(like rage).

@@TheLegendaryLegacy You do not get Ki until 2nd level in Monk(for Dedicated Weapon). You do not get Kensei until 3rd level in Monk. Similarly, you do not get your Barbarian subclass until level 3. Regardless, your unarmed extra attacks are still unarmed attacks(either from bonus action Martial Arts or Flurry of Blows). Not claw attacks. Because your claw attacks counts as weapons. Which means at level 5, you are probably looking at a BeastBarb3/Monk2. Sure, it is possible to 2 claw attacks(d6) off, and then a bonus attack(martial d4) or Flurry(2 attacks at d4). But that is still lower damage than a Barb5 with Polearm Master and a Glaive, or a Barb5 with GWM. And it relies on using your bonus action to keep up, which means on turn 1(rage), you will be a fair bit behind. Similarly, to use Flurry, you need Ki, and with only 2-3 points, they are gone very fast. The Barb/Monk is MAD, so you will have a weaker 1-3 level. Similarly, you do not get a true powerspike at 4th level, if you multiclass at this point. You could wait until level 5 to multiclass(still MAD for 5 levels though), to get your Extra Attacks "on time", but then it is your level 6 that is a lot weaker, as a regular Barb will get their second path feature here(in this case, counting your claws as magical, among other things) and an additional use of Rage per long rest. In addition to this, the MAD barb will generally have lower AC(15) compared to a medium armored Barb(16), as well as lower HP. Thematically, it is a fun combo. But mechanically, there are so many things that do not mesh very well. You end up being a melee character with somewhat poor AC, minimal utility and only "ok" damage output. The Barb Monk does not scale well either, because items you get are typically not to your benefit or as powerful. Boosting your unarmed or natural weapon damage is possible, but has far less potential. Similarly, because you rely on both Rage and Ki, you want a decent amount of levels of both classes to have enough resources for tier 2+ campaigns. If you want to go "Nova" with a beast barb, the Fighter is a much better multiclass than Monk. You avoid going MAD. You only need a 2 level dip for Nova, and you get a fighting style and Second Wind. If you then go for Fighter3, you can pick Champion, Battlemaster or Echo Knight for more options. The BeastBarb/Monk is good for brawling and grappling. That is about it.

@@TheLegendaryLegacy What Barb AC? Due to MAD you might have 15 AC at best(if you sacrifice strength), until you get the Kensei stuff(which, at its earliest, is Monk level 3). Remember, this is the Barbarian list. You start as a Barbarian. So if you intend to go Barb3/Kensei6, you take 1 level in Barb and then maybe 5 levels in Monk for extra attack(meaning Kensei at character level 4). Then either 1 more in monk or 2 in Barb. That is still a big delay in various standard power spikes(3 levels with 15 or less AC, for instance, very few rages per long rest). If you use a shield or armor, your unarmed attacks(bonus attacks from Martial Arts/Flurry) becomes only 1 damage +modifers. It is not "solid" when there are so many levels where other characters get a noticable spike in power, while the Barb/Monk just get a small, situational compensation for what they lost, not a unique strength. When your overall damage and survivability is lower than a standard Barb in most of your levels, it is not "solid". It can still be fun and flavourful, but you are not competing with regular barbs or more optimized multiclasses anymore. To use Kensei's Agile Parry(+2 AC), it requires you to make an Unarmed strike as part of your Attack Action. To use both Claw and Unarmed Strike as part of your attack action, you need to be Barb3/Monk5(or the other way around). Which means for the Barb1/Kensei3(earliest AC boost), a Turn 2 attack round is: Unarmed Strike(to enable the AC bonus), followed by 1(Martial Arts) or 2(Flurry) Unarmed Strikes. Same deal for Kensei4(character level 5), although might have improved your Strength or AC with an ASI, to negate most of the MAD effect. At Kensei5(char level 6) you get 2 Unarmed attacks as your Attack action, but you cant use Claws yet, and you still only have 2 Rages per Long rest. So you either suffer from low damage(low damage die/few attacks per turn) or low AC(15 or less), partially due to MAD, for most of your early levels(1-7). Spending a very limited resource to deal extra damage is what it means to "go nova". You get your "Nova" at level 8 when you can get up to 5 attacks off in your turn, by spending Ki and Rage(rage was activated previous round). 5d6+25, or an average of 47.5 damage. That is "ok", but again, comes at the cost of a lower HP pool(compared to pure Barb) and the effect of MAD(either lower strength or AC. If you get +3 damage from strength, your base AC is 14, unless you use your ASI at Monk4 to improve it). A Level 8 Barbarian with a Flametongue Greatsword(which is a typical magic weapon at this level), can make 2 attacks per turn. In this case, they have also spent their level 8 ASI for increased Strength(+4 modifier now). That is 4d6+4d6+12, or an average of 40. If they have GWM(from level 4 ASI/feat), they can potentially get an extra attack as a Bonus Action, which is an extra 4d6+6. A total of 60 average damage. Remember, these attacks are more accurate when compared to the MAD Barb/Monk, due to having 18+ strength rather than 16 or less. If we use the -5 attack roll from GWM for an extra +10 damage to each attack, then it becomes 90 potential average damage. It only cost the Rage activation, of which you have 4, meaning every round, you can have this much potential damage. And Remember, you having, at least, 16 AC by this point(just from a simple Breastplate). The wrestle bodyslam combo is an old favourite of mine, and the reason why I consider Barb/Monk a fun character to try. Specifically in a 1-shot where you get to start at level 10(level 6 Beastbarb high jump and level 4 Monk slow fall). Outside of that, it is just less power and a lot of restrictions, if you try to level it from 1 to 10. I know, because I have done it a few times. You get overall more grapple potential by going Barb/Rogue(Advantage + Expertise makes your Athletics check auto win in most cases).