[P] Sleeping Gas
Flip a coin. If heads, the Defending Pokémon is now Asleep.
[P][C] Destiny Bond
Discard 1 [P] Energy card attached to Gastly in order to use this attack. If a Pokémon Knocks Out Gastly during your opponent’s next turn, Knock Out that Pokémon.
Almost invisible, this gaseous Pokémon cloaks the target and puts it to sleep without notice.
Legal in the following formats: