Nightmare is a Ghost-Type move introduced in Generation II. This move only works on Pokémon that are afflicted with the Sleep Status Condition; these Pokémon are shown a nightmare by the user that causes the target to lose 25% of their HP for each turn that the nightmare persists.
Nightmare was contained within TM50 in the Generation II games.
Pokémon that Learn this Move via Level-Up
Pokémon that Learn this Move via Breeding
Generation III: Pokémon that Learn this Move via Move Tutor (XD: Gale of Darkness)
Pokémon that Learn this Move via Sketch
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