Gengar (Space-Time Creation No. 048)
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Colorless
Life Drain

Flip a coin. If heads, put damage counters on the Defending Pokémon until it is 10 HP away from being Knocked Out.

Psychic Psychic Colorless
Shadow Dance

Put 4 damage counters on your opponent's Pokémon in any way you like. Then, switch Gengar with 1 of your Benched Pokémon.