Sorry for the lack of audio and editing, thought I'd throw this out here asap cause I've been putting off showing this version of a heart farm. If you want to skip to the end of the worm farming go to 2:20. I used spell lab to heal myself to full hp, but it's better to have healing on hand/ambrosia when doing this trick.
Circle of shielding heart farm + heart mage for millions of max hp. Circle of shielding has a capped spell duration so you cannot infinitely farm this, but a million HP will be more than you need for most Noita runs.
The black hole is good to have around once you're done killing worms. It will sling the circle of shieldings away so no cached worms spawn. You really only need to pollen the shield once to get it going, or you can activate it yourself by standing in the center. Once it starts, the spawned worms will proc the circle of shielding. You can scale this farm however much you want. If you have multiple matosades, you can do three, four, five, etc. at a time.