This clever engine turns your own commander into a lethal turret by letting Street Urchin grant an activated ping ability to Malcolm, Keen-Eyed Navigator. Because Malcolm is a Pirate, every time he deals damage to an opponent, he normally generates Treasure tokens—but with Kaya, Geist Hunter's -2 ability doubling your token generation for the turn, each ping yields a double bounty of Treasures. You can then sacrifice those extra tokens for mana to pay for Street Urchin's ability, creating a self-sustaining loop that pelts your opponents for infinite damage.