This clever loop uses Ashes of the Fallen to rewrite the identity of Promised Kannushi, ensuring that every time it hits the graveyard, its soulshift trigger is primed to return a Spirit directly to your hand. By sacrificing Promised Kannushi to Ashnod's Altar, you harvest the exact amount of colorless mana needed to fund its re-casting, while Crossroads Candleguide steps in to convert that colorless energy into the green mana required to complete the loop. Because Promised Kannushi constantly cycles between the battlefield, graveyard, and your hand for a net-zero cost, you generate an endless storm of creature deaths, entries, and sacrifices.