Intimidate
From Pixelmon Wiki
Intimidate is an Ability that lowers the opponent's Attack by one stage when the Pokémon with Intimidate is sent out (i.e. at the start of the battle or when switching in). In a double battle, both opponents' Attack stats will be lowered. Intimidate does not affect a Pokémon that is behind a Substitute.
Any Pokémon with this ability is able to use the Scare move skill.