At the end of each turn, each Pokémon that is asleep will lose 1/8 of its maximum HP while the Pokémon with this ability is on the field.
Pokémon with Bad Dreams
As a natural ability
|If any of the Pokémon were introduced before the generation that Bad Dreams was introduced in, then they will not have it as a natural ability until then.|
- Tobias' Darkrai is the only known one of its kind to not have used this ability.