Defiler of Faith + Oketra's Monument + Auriok Champion + Whitemane Lion

Defiler of Faith

Oketra's Monument

Auriok Champion

Whitemane Lion

How it works

1. Cast Whitemane Lion by paying 0 and 2 life due to Defiler of Faith and Oketra's Monument.
2. Defiler of Faith and Oketra's Monument trigger.
3. Resolve the Defiler of Faith trigger, creating a 1/1 Soldier creature token.
4. When the Soldier enters, Auriok Champion triggers, causing you to gain life.
5. Resolve the Oketra's Monument trigger, creating a 1/1 Warrior creature token.
6. When the Warrior enters, Auriok Champion triggers, causing you to gain life.
7. Resolve Whitemane Lion. When it enters, it and Auriok Champion trigger.
8. Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand.
9. Resolve the Auriok Champion trigger, causing you to gain life.
10. Repeat.

This clever loop relies on stacking cost-reduction effects to cast Whitemane Lion entirely for free. With both Defiler of Faith and Oketra's Monument reducing its price down to zero, you can repeatedly cast the flash cat from your hand, paying life instead of mana for the Defiler's alternate cost. Each time Whitemane Lion enters the battlefield, its own ability forces it right back to your hand, creating a self-sustaining loop that triggers both Auriok Champion and the token-generation abilities of your cost reducers to harvest infinite life and an endless army of Soldier and Warrior tokens.