Defiler of Faith + Oketra's Monument + Soul Warden + Whitemane Lion

Defiler of Faith

Oketra's Monument

Soul Warden

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, Soul Warden 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, Soul Warden triggers, causing you to gain life.
7. Resolve Whitemane Lion. When it enters, it and Soul Warden trigger.
8. Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand.
9. Resolve the Soul Warden trigger, causing you to gain life.
10. Repeat.

This clever loop lets you cast Whitemane Lion entirely for free by leveraging the cost-reducing synergy of Defiler of Faith and Oketra's Monument to drop its mana value down to zero. Every time the Lion enters the battlefield, its own ability bounces it right back to your hand so you can cast it all over again, while Soul Warden turns this endless cycle into a fountain of life. Meanwhile, both Defiler of Faith and Oketra's Monument trigger off casting the creature and its entrance, flooding your board with an endless army of Soldier and Warrior tokens.