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#10044 
Insomnia
"Prevents sleep."
Pokémon with this ability 24
drowzee
Psychic
hypno
Psychic
hoothoot
Normal Flying
noctowl
Normal Flying
spinarak
Bug Poison
ariados
Bug Poison
murkrow
Dark Flying
delibird
Ice Flying
shuppet
Ghost
banette
Ghost
honchkrow
Dark Flying
pumpkaboo average
Ghost Grass
gourgeist average
Ghost Grass
tarountula
Bug
spidops
Bug
capsakid
Grass
scovillain
Grass Fire
pumpkaboo small
Ghost Grass
pumpkaboo large
Ghost Grass
pumpkaboo super
Ghost Grass
gourgeist small
Ghost Grass
gourgeist large
Ghost Grass
gourgeist super
Ghost Grass
mewtwo mega y
Psychic