Derevi, Empyrial Tactician + Emiel the Blessed + Deathbloom Ritualist

Derevi, Empyrial Tactician

Emiel the Blessed

Deathbloom Ritualist

How it works

1. Activate Deathbloom Ritualist by tapping it, adding at least three mana of any color.
2. Activate Emiel by paying 3, blinking Derevi.
3. When Derevi enters the battlefield, it triggers, untapping Deathbloom Ritualist.
4. Repeat.

This loop relies on Deathbloom Ritualist to provide the engine's fuel, generating a surplus of mana each time it taps based on your graveyard's creature count. By feeding that mana into Emiel the Blessed, you can repeatedly exile and blink Derevi, Empyrial Tactician. Every single time Derevi enters the battlefield, its triggered ability untaps Deathbloom Ritualist, allowing you to restart the cycle and generate infinite colored mana, infinite creature triggers, and untap any other permanent you control along the way.