Moody
8 Pokémon can have Moody: 8 as a Hidden Ability.
What does Moody do?
After each turn, one of this Pokémon's stats at random rises two stages, and another falls one stage. If a stat is already at 6 or -6 stages, it will not be chosen to be increased or decreased, respectively.
Which Pokémon have Moody as a Hidden Ability? (8)
How Abilities work · Hidden Abilities explained · Every Ability