Defiler of Faith + The Immortal Sun + Whitemane Lion + Virulent Emissary

Defiler of Faith

The Immortal Sun

Whitemane Lion

Virulent Emissary

How it works

1. Cast Whitemane Lion by paying 0 and 2 life due to Defiler of Faith and The Immortal Sun.
2. Defiler of Faith triggers, creating a 1/1 Soldier creature token.
3. When the Soldier enters, Virulent Emissary triggers, causing you to gain life.
4. Resolve Whitemane Lion. When it enters, it and Virulent Emissary trigger.
5. Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand.
6. Resolve the Virulent Emissary trigger, causing you to gain life.
7. Repeat.

This brilliant loop achieves infinity by turning Whitemane Lion into a completely free, self-returning spell, fueled by a brilliant cost-reduction stacking trick. With The Immortal Sun shaving {1} off your spells and Defiler of Faith dropping the remaining {W} cost in exchange for 2 life, you can cast the Lion for zero mana. Every time the Lion enters the battlefield, its own trigger forces it right back to your hand while triggering Virulent Emissary to pad your life total, and the Defiler of Faith simultaneously churns out an endless army of 1/1 Soldier tokens.