Mewtwo EX - XY183 (XY183) [Jumbo Cards] Holofoil Set_XY - Steam Siege the Defending Pokémon can't evolve

the Defending Pokémon can't evolve except from effects of attacks or Pokémon Powers

you may move 1 damage counter from 1 of your Pokémon SP to another of your Pokémon SP

This attack does 10 damage times the number of heads to that Pokémon

Grass Gather Sunlight Search your deck for up to 2 Basic Energy cards

Mewtwo EX - XY183 (XY183) [Jumbo Cards] Holofoil Set_XY - Steam Siege the Defending Pokémon can't evolveRarityPromo Hit Points170 HP Colorless,Colorless Photon Wave (30) During your opponent's next turn, any damage done by attacks from the Defending Pokmon is reduced by 30 (before applying Weakness and Resistance). Weakness Psychic 2