Insomnia
Prevents sleep.
17 species 9 as main 8 as innate 4 battle AI weight, −2 to 10 Ignored by Mold Breaker
In detail
Prevents falling asleep by any means, including sleep moves, abilities like Yawn, and other effects that cause sleep status. Rest will fail completely when used. If gained while asleep (via Worry Seed/Skill Swap), immediately wakes up. Can be bypassed by Mold Breaker and similar abilities.
Types that carry it
17 species Ghost 8 Grass 8 Flying 3 Normal 2 Psychic 2 Bug 1 Dark 1 Fire 1
As a main ability
9 speciesSelectable — one of up to three, and only one is active.
As an innate
8 speciesAlways on, alongside whichever main ability is chosen.