As the name suggests, he is capable of bringing out decks of cards and utilizing them in battle. The applications the cards have seem to be various: Benny can use the cards as multiple blades and release a stream of them, working as if they were shuriken; he can also shoot a single one to assassinate someone or apply Haki to their surface and act as if they were knifes. He was capable of creating card walls that avoided attacks. Combined with his speed and athletic skills, Benny can create devastating combos.