Kodama of the East Tree + Cloudstone Curio + Irenicus's Vile Duplication

Kodama of the East Tree

Cloudstone Curio

Irenicus's Vile Duplication

How it works

1. Cast Irenicus's Vile Duplication by paying 3, creating a nonlegendary token copy of Kodama of the East Tree with flying.
2. When the token enters the battlefield, Cloudstone Curio and the original Kodama of the East Tree trigger; decline to use these abilities unless desired.
3. Play the nonartifact permanent in your hand.
4. When it enters the battlefield, Cloudstone Curio and both copies of Kodama of the East Tree trigger.
5. Resolve the Cloudstone Curio trigger, returning the other nonartifact permanent from the battlefield to your hand.
6. Resolve the first Kodama of the East Tree trigger, putting the permanent you returned in step 5 from your hand onto the battlefield.
7. When that permanent enters the battlefield, Cloudstone Curio and the second Kodama of the East Tree trigger.
8. Resolve the Cloudstone Curio trigger, returning the permanent you played in step 3 from the battlefield to your hand.
9. Resolve the Kodama of the East Tree trigger from step 7, declining to use it unless desired.
10. Resolve the remaining Kodama of the East Tree trigger from step 4, putting the permanent you returned in step 8 from your hand onto the battlefield.
11. Repeat from step 4 any number of times.
12. This combo results in Infinite ETB and Infinite LTB if a permanent involved is a creature, and/or Infinite landfall triggers if it is a land.

This elegant loop relies on having two copies of Kodama of the East Tree—one of which is made nonlegendary by Irenicus's Vile Duplication—to turn any low-drop permanent into an engine for infinite triggers. Whenever you play a nonartifact permanent, Cloudstone Curio triggers to bounce your previous permanent back to your hand, allowing the dual Kodama triggers to seamlessly alternate putting those permanents back onto the battlefield. Because both Kodamas recognize each other's tokens and permanents entering independently, you can churn through your entire hand, generate infinite landfall triggers, or trigger infinite creature enters-the-battlefield and leaves-the-battlefield events at will.