Mega Gengar ex

Ability — Shadowy Concealment: If 1 of your {D} Pokémon is Knocked Out by damage from an attack from your opponent's Pokémon ex, that player takes 1 fewer Prize card. The effect of Shadowy Concealment doesn't stack.

Void Gale (230): Move an Energy from this Pokémon to 1 of your Benched Pokémon.