This intricate loop lets you leverage Hei Bai, Forest Guardian's five-color activation to flood the board with Spirit tokens, provided you control enough legendary enchantments to make the math work. Once those tokens are in play, you feed them directly into Phyrexian Altar to generate the exact mana colors needed to keep the engine rolling. High Alert serves as the crucial untap engine for Hei Bai, allowing you to reset its tap ability and repeat the entire cycle indefinitely for infinite mana and triggers.