(REQUEST) Mythic mobs - Boss with effects and attacks

[PasholNahui]

Could someone throw off a boss who has a lot of beautiful effects, and different attacks, I just don't understand how to make drawings from effects or alternate attack animations, I have already created blockbench animations as well as models. But how to fit them into the boss along with effects, such as a hand attack followed by particles. Please help )) (I want to become a creator in the field of creating bosses)