This loop turns a simple enchantment into an infinite mana engine by exploiting Enduring Vitality's unique rebirth clause. With the help of Zur, Eternal Schemer, that enchantment temporarily becomes a creature so it can tap for mana using its own granted ability before being fed directly into Ashnod's Altar for colorless energy. When Enduring Vitality dies, its static revival ability immediately returns it to the battlefield as an enchantment, ready to be animated all over again. Meanwhile, Kratos, God of War quietly ensures that any incidental creatures you control have haste while punishing opponents during their end steps, rounding out a relentless cycle of sacrifices.