Suppose Game Freak played a Fire Emblem game and decided that Pokémon can now have up to 6 abilities at once. No more need to pick between a competitive ability and a flavorful one - now your Azumarill can have Pure Power, its defensive abilities, *and* some autistically niche signature ability called "Floating Tail", all at once.

E.g. for Chimecho here, it might get
>Levitate (existing ability)
>Suction Cups
>Aerilate
>Oblivious
>Healer
>Clear Chime: Boosts its team's SpDef when struck by a Flying-type move instead of taking damage

Dig into the Dex entries and give me your best ideas