Defiler of Faith + Verdant Sun's Avatar + Whitemane Lion + Grand Arbiter Augustin IV

Defiler of Faith

Verdant Sun's Avatar

Whitemane Lion

Grand Arbiter Augustin IV

How it works

1. Cast Whitemane Lion by paying 0 and 2 life due to Defiler of Faith and Grand Arbiter Augustin IV.
2. Defiler of Faith triggers, creating a 1/1 Soldier creature token.
3. When the Soldier enters, Verdant Sun's Avatar triggers, causing you to gain life.
4. Resolve Whitemane Lion. When it enters, it and Verdant Sun's Avatar trigger.
5. Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand.
6. Resolve the Verdant Sun's Avatar trigger, causing you to gain life.
7. Repeat.

This clever loop relies on stacking cost reductions from both Defiler of Faith and Grand Arbiter Augustin IV to cast Whitemane Lion entirely for free, provided you pay two life for the Defiler's alternative cost. Each time the Lion enters the battlefield, its own trigger forces it right back to your hand so you can cast it again, while Defiler of Faith creates a 1/1 white Soldier creature token to populate your board. Finally, Verdant Sun's Avatar turns every single one of those entering creatures into a steady stream of life gain, sealing the engine into an endless cycle of free casts and triggers.