This engine transforms a simple sacrifice outlet into a self-sustaining loop by turning your creature tokens into mana sources. With Jaheira, Friend of the Forest granting every token the ability to tap for green mana, the Spawning Pit tokens can fund their own recreation. Anointed Procession supercharges this exchange, doubling every batch of Spawn artifact creature tokens so you always net extra resources for mana, sacrifices, and counters. Meanwhile, Barbarian Class provides a nice scaling bonus whenever you roll dice, though the true heavy lifting here relies entirely on the infinite creature generation and sacrifices churning through the Pit and Jaheira's mana.