Mathematician (Ability)

Mathematician is an ability. It is the signature ability of the Floatby line and is original to Pokémon Beryl.

Effect
When the Pokémon with this ability is sent out, damage calculations for all of its damaging moves are performed, and a message will be displayed notifying the player which of them will inflict the most damage.

The message is: "[Pokémon's name] believes that [move name] will be most effective!"