Lycanroc-GX

Ability — Twilight Eyes: When you play this Pokémon from your hand to evolve 1 of your Pokémon during your turn, you may discard an Energy attached to your opponent's Active Pokémon.

Accelerock (120)

Splintered Shards-GX (30): This attack does 30 damage for each Energy card in your opponent's discard pile. (You can't use more than 1 GX attack in a game.)