To breed Rare Clackula on Bone Island, their combination is two of any triple element monsters that have the bone element.
This has to be a Sans reference, right? Regardless of whether is is or not, I really like the design! It’s simple, but it works so well! I love the blue used for this monster, it pairs really nicely with the black and white! And I also like spikes in the legs! Honestly a top tier design overall!