This clever loop is powered by Thermopod, which happily turns your sacrificed creatures into the red mana needed to keep the engine running. The true magic lies in Fungal Fortitude, an enchantment that resurrects the enchanted creature whenever it dies; here, it enchants Danitha, Benalia's Hope. Every time Danitha is sacrificed to Thermopod, Fungal Fortitude brings her right back, and her entrance trigger immediately plucks Fungal Fortitude back out of the graveyard to reattach itself. The result is an endless cycle of sacrifices, resurrections, and reattachments that generates infinite red mana and boundless death triggers.