This clever loop relies on a self-sustaining cycle of sacrifice and rebirth: by sacrificing Spirit Loop to Faith Healer, you trigger the Aura's own ability to return itself safely to your hand rather than staying in the graveyard. Defiler of Faith is the engine that ties the whole room together, using the life you gain from Faith Healer to pay the cost of casting Spirit Loop—while simultaneously capitalizing on those casts to flood the board with an endless army of Soldier tokens. Meanwhile, Transcendent Envoy quietly sits on the battlefield making sure your recurring Aura spell is cheap enough to keep the chain unbroken, turning a simple lifecycle into an infinite engine.