Cast Kor Skyfisher by paying 0 and 2 life due to Defiler of Faith and Oketra's Monument.
Defiler of Faith and Oketra's Monument trigger.
Resolve the Defiler of Faith trigger, creating a 1/1 Soldier creature token.
When the Soldier enters, Verdant Sun's Avatar triggers, causing you to gain life.
Resolve the Oketra's Monument trigger, creating a 1/1 Warrior creature token.
When the Warrior enters, Verdant Sun's Avatar triggers, causing you to gain life.
Resolve Kor Skyfisher. When it enters, it and Verdant Sun's Avatar trigger.
Resolve the Kor Skyfisher trigger, returning it from the battlefield to your hand.
Resolve the Verdant Sun's Avatar trigger, causing you to gain life.
Repeat.
This ingenious loop relies on a pair of cost-reducers—**Defiler of Faith** and **Oketra's Monument**—working in tandem to slash the casting cost of **Kor Skyfisher** all the way down to zero mana, requiring you to pay just 2 life instead. Because **Kor Skyfisher** costs nothing to cast, you can repeatedly deploy it and trigger its self-bounce drawback, which simply returns the Skyfisher right back to your hand to do it all over again. Meanwhile, every iteration of this cycle feeds off the persistent static and triggered abilities of the board: **Defiler of Faith** and **Oketra's Monument** flood the battlefield with a steady stream of token creatures, and **Verdant Sun's Avatar** eagerly watches them arrive, converting every single creature entry into a cushion of life that easily offsets the initial life payment.