Defiler of Faith + Essence Warden + The Immortal Sun + Whitemane Lion

Defiler of Faith

Essence Warden

The Immortal Sun

Whitemane Lion

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, Essence Warden triggers, causing you to gain life.
4. Resolve Whitemane Lion. When it enters, it and Essence Warden trigger.
5. Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand.
6. Resolve the Essence Warden trigger, causing you to gain life.
7. Repeat.

This clever loop relies on stacking cost reductions from The Immortal Sun and Defiler of Faith to make casting Whitemane Lion entirely free (by trading life for the remaining mana), which in turn triggers Defiler of Faith to continually flood the board with 1/1 Soldier creature tokens. Every time those tokens and the Lion enter the battlefield, Essence Warden catches the influx of creatures to endlessly pad your life total. Meanwhile, The Immortal Sun quietly pulls double duty by cheapening your spells further while shutting down opposing planeswalkers, turning this self-bouncing cat into an infinite engine for storm count, life, and tokens.