This cunning setup turns your commander's ammunition into a self-sustaining engine by letting Street Urchin provide a way to weaponize your board for just a single mana. When Malcolm, Keen-Eyed Navigator deals that damage as a Pirate, his ability triggers to generate Treasure tokens, which are instantly doubled by Parallel Lives to outpace the activation cost. You simply sacrifice one of those newly minted Treasures to fuel Street Urchin's ability again, repeating the loop to deal infinite damage to your opponents.