Hysterical Move

A Hysterical Move is a form of mutation found in Rota. It consists of a Pokémon randomly using a move it cannot learn. It has a 5% chance of occurring. Usually, said moves are moves a Pokémon or its evolution can use but is not in its moveset (including moves the original Pokémon itself cannot access, such as Clauncher's Aura Sphere). However, there are two exceptions. Pokémon can use Hysterical Moves completely outside their and their evolution family's moveset, including signature moves (such as a Toxicroak using Strength Sap) under certain conditions, due to logical circumstances (in this case, because Croagunk from Pokken Tournament DX has a lot of attacks that are random and involve stats and stat changes). Finally, while Eeveeon does not evolve into any other Eeveelution, it can still hysterically access moves that other Eeveelutions can learn (such as Flame Claw, learned only by Flareon out of the other Eeveelutions).