This clever loop relies on Blazing Firesinger's unique ability to cast a copy of Seething Song from exile whenever it enters the battlefield prepared. By using Emiel the Blessed to repeatedly exile and blink Blazing Firesinger, you reset its prepared state so it can continuously generate a massive surplus of red mana. Meanwhile, Umori, the Collector sits quietly on the battlefield, shaving {1} off the cost of your spells and making this engine remarkably efficient to sustain.