Golem

Ability · Crystal Type

Whenever you attach a [G], [R], or [F] basic Energy card from your hand to Golem, Golem's type (color) becomes the same as that type of Energy until the end of the turn.

F · F · C

G · R · F · C

Golem does 20 damage to itself. This attack also does 10 damage to each Benched Pokémon (yours and your opponent's). (Don't apply Weakness and Resistance for Benched Pokémon.)

Weakness: Water · Resistance: none · Retreat: 4