Lycanroc

It has no problem ignoring orders it doesn't like. It doesn't seem to mind getting hurt at all—as long as it can finish off its opponent.

Ability — Boiling Blood: If your opponent has any Pokémon-GX or Pokémon-EX in play, this Pokémon’s attacks cost ColorlessColorlessColorless less.

Voltage Claw (60+): If your opponent’s Active Pokémon has any Special Energy attached to it, this attack does 70 more damage.