Mewtwo & Mew GX - 71/236 - Ultra Rare from Sun & Moon: Unified Minds, available at 401 Games Canada.

• Rarity: Ultra Rare
• Finish: Holofoil
• Artist: Mitsuhiro Arita
• Card Text:
  Ability — Perfection
  This Pokémon can use the attacks of any Pokémon-GX or Pokémon-EX on your Bench or in your discard pile.(You still need the necessary Energy to use each attack.)
  [1PP+] Miraculous Duo GX (200)
  If this Pokémon has at least 1 extra Energy attached to it (in addition to this attack's cost), heal all damage from all of your Pokémon. (You can't use more than 1 GX attack in a game.)