Golem#148/144

Whenever you attach a Grass, Fire, or Fighting 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.

Fighting, Fighting, Colorless ·

Grass, Fire, Fighting, Colorless · 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.)