This intricate loop transforms the way your entire deck interacts with the battlefield by turning your creatures into a self-sustaining engine. With Ashaya, Soul of the Wild on the board, every nontoken creature you cast also enters as a Forest land, while Celestial Dawn steps in to ensure those lands are simultaneously treated as Plains. This crucial color-fixing and land-type interaction means that whenever you cast a creature, Emeria Shepherd immediately triggers and allows you to pull a permanent straight from your graveyard back to the battlefield. By holding priority and sacrificing that newly entered creature to Lithatog, you feed the devourer while instantly setting up the recursion chain, letting you loop your entire graveyard infinitely for massive ETB, LTB, and death triggers.