Requires

Kodama of the East Tree must be on the battlefield. Cloudstone Curio must be on the battlefield. Double Major must be in hand. Two additional nonartifact permanent cards on the battlefield that share a type. Mana needed:

Steps

1. Cast Kodama of the East Tree by paying .
2. Holding priority, cast Double Major by paying , copying the Kodama of the East Tree spell except it isn't legendary.
3. The nonlegendary Kodama of the East Tree enters the battlefield, triggering Cloudstone Curio; decline to use this ability unless desired.
4. The legendary Kodama of the East Tree enters the battlefield, triggering Cloudstone Curio and the token Kodama of the East Tree; decline to use these abilities unless desired.
5. Play the nonartifact permanent in your hand.
6. When it enters the battlefield, Cloudstone Curio and both copies of Kodama of the East Tree trigger.
7. Resolve the Cloudstone Curio trigger, returning the other nonartifact permanent from the battlefield to your hand.
8. Resolve the first Kodama of the East Tree trigger, putting the permanent you returned in step 7 from your hand onto the battlefield.
9. When that permanent enters the battlefield, Cloudstone Curio and the second Kodama of the East Tree trigger.
10. Resolve the Cloudstone Curio trigger, returning the permanent you played in step 5 from the battlefield to your hand.
11. Resolve the Kodama of the East Tree trigger from step 9, declining to use it unless desired.
12. Resolve the remaining Kodama of the East Tree trigger from step 6, putting the permanent you returned in step 10 from your hand onto the battlefield.
13. Repeat from step 6 any number of times.
14. 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.

Results