This elegant loop creates a self-sustaining cycle of pain and rejuvenation by locking two mutually reinforcing permanents together. Once you initiate the sequence, Vito, Thorn of the Dusk Rose converts any initial life gain into an opponent's life loss, which immediately trips Bloodthirsty Conqueror's triggered ability to hand that exact life right back to you. Because gaining life triggers Vito all over again, the two feed into each other in an unbroken, self-replicating loop that drains your rival down to zero.