Bad Dreams — Pokémon Ability

Damages sleeping opponents for 1/8 their max HP after each turn.

Effect notes

Opposing Pokémon take 1/8 of their maximum HP in damage after each turn while they are asleep.

In-game descriptions by version

diamond pearlReduces a sleeping foe’s HP.
platinumReduces a sleeping foe’s HP.
heartgold soulsilverReduces a sleeping foe’s HP.
black whiteReduces a sleeping foe’s HP.
black 2 white 2Reduces a sleeping foe’s HP.
x yReduces the HP of sleeping opposing Pokémon.
omega ruby alpha sapphireReduces the HP of sleeping opposing Pokémon.
sun moonReduces the HP of sleeping opposing Pokémon.
ultra sun ultra moonReduces the HP of sleeping opposing Pokémon.
lets go pikachu lets go eeveeReduces the HP of sleeping opposing Pokémon.
sword shieldReduces the HP of sleeping opposing Pokémon.
scarlet violetDamages opposing Pokémon that are asleep.

Pokémon with this ability