>>39393752You'd probably have to mod the battle engine itself to load a pokemon specific animation when a specific move is used.
The current engine (as of gen7) only uses different animations based on move categories (special, physical, physical contact, status, and maybe others) but it's not designed to play a specific animation for a particular move. So you'd have to change the whole design of the engine. By far, the hardest part would be, of course, reverse engineering but past that, it's probably just a few dozens bytes of code to patch.
