Requires

Kodama of the East Tree must be in hand, or in the command zone. Double Major must be in hand. Selesnya Sanctuary must be in hand. Mana needed: plus enough mana to pay for commander tax, if applicable

Steps

1. Cast Kodama of the East Tree by paying plus commander tax, if applicable.
2. Holding priority, cast Double Major by paying , copying the Kodama of the East Tree spell, with the copy not being legendary.
3. Resolve both Kodama of the East Tree spells.
4. Play Selesnya Sanctuary.
5. Both Kodama of the East Trees and Selesnya Sanctuary trigger.
6. Resolve the token Kodama of the East Tree trigger, choosing not to put anything from your hand onto the battlefield.
7. Resolve the Selesnya Sanctuary trigger, returning it to your hand from the battlefield.
8. Resolve the nontoken Kodama of the East Tree trigger, putting Selesnya Sanctuary from your hand onto the battlefield.
9. The token Kodama of the East Tree and Selesnya Sanctuary trigger.
10. Resolve the Selesnya Sanctuary trigger, returning it to your hand from the battlefield.
11. Resolve the token Kodama of the East Tree trigger, putting Selesnya Sanctuary from your hand onto the battlefield.
12. The nontoken Kodama of the East Tree and Selesnya Sanctuary trigger.
13. Repeat from step 7.

Results