Requires

Steps

1. At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Kodama of the East Tree that isn't legendary.
2. Play Golgari Rot Farm.
3. Kodama of the East Tree, the Kodama of the East Tree token, and Golgari Rot Farm trigger.
4. Resolve the Kodama of the East Tree token's trigger, choosing not to put anything from your hand onto the battlefield.
5. Resolve the Golgari Rot Farm trigger, returning it to your hand.
6. Resolve the Kodama of the East Tree trigger, putting Golgari Rot Farm onto the battlefield.
7. The Kodama of the East Tree token and Golgari Rot Farm trigger.
8. Resolve the Golgari Rot Farm trigger, returning it to your hand.
9. Resolve the Kodama of the East Tree token's trigger, putting Golgari Rot Farm onto the battlefield.
10. Kodama of the East Tree and Golgari Rot Farm trigger.
11. Repeat from step 5.
12. At the beginning of your combat phase, Helm of the Host triggers, creating a nonlegendary token copy of Kodama of the East Tree with haste.
13. Play Golgari Rot Farm.
14. Both Kodama of the East Trees and Golgari Rot Farm trigger.
15. Resolve the token Kodama of the East Tree trigger, choosing not to put anything from your hand onto the battlefield.
16. Resolve the Golgari Rot Farm trigger, returning it to your hand from the battlefield.
17. Resolve the nontoken Kodama of the East Tree trigger, putting Golgari Rot Farm from your hand onto the battlefield.
18. The token Kodama of the East Tree and Golgari Rot Farm trigger.
19. Resolve the Golgari Rot Farm trigger, returning it to your hand from the battlefield.
20. Resolve the token Kodama of the East Tree trigger, putting Golgari Rot Farm from your hand onto the battlefield.
21. The nontoken Kodama of the East Tree and Golgari Rot Farm trigger.
22. Repeat from step 5.

Results