Moody
Stats change gradually.
16 species 15 as main 1 as innate 10 battle AI weight, −2 to 10
In detail
At the end of each turn, randomly selects one stat to raise by 2 stages and another different stat to lower by 1 stage.
Types that carry it
16 species Normal 7 Fire 3 Dark 2 Flying 2 Ice 2 Water 2 Grass 1 Poison 1
As a main ability
15 speciesSelectable — one of up to three, and only one is active.
As an innate
1 speciesAlways on, alongside whichever main ability is chosen.