Kodama of the East Tree + Helm of the Host + Izzet Boilerworks

Kodama of the East Tree

Helm of the Host

Izzet Boilerworks

How it works

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 Izzet Boilerworks.
3. Kodama of the East Tree, the Kodama of the East Tree token, and Izzet Boilerworks 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 Izzet Boilerworks trigger, returning it to your hand.
6. Resolve the Kodama of the East Tree trigger, putting Izzet Boilerworks onto the battlefield.
7. The Kodama of the East Tree token and Izzet Boilerworks trigger.
8. Resolve the Izzet Boilerworks trigger, returning it to your hand.
9. Resolve the Kodama of the East Tree token's trigger, putting Izzet Boilerworks onto the battlefield.
10. Kodama of the East Tree and Izzet Boilerworks 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 Izzet Boilerworks.
14. Both Kodama of the East Trees and Izzet Boilerworks 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 Izzet Boilerworks trigger, returning it to your hand from the battlefield.
17. Resolve the nontoken Kodama of the East Tree trigger, putting Izzet Boilerworks from your hand onto the battlefield.
18. The token Kodama of the East Tree and Izzet Boilerworks trigger.
19. Resolve the Izzet Boilerworks trigger, returning it to your hand from the battlefield.
20. Resolve the token Kodama of the East Tree trigger, putting Izzet Boilerworks from your hand onto the battlefield.
21. The nontoken Kodama of the East Tree and Izzet Boilerworks trigger.
22. Repeat from step 5.

This clever loop relies on the duplicated triggers of multiple Kodama of the East Tree to bounce and replay your lands indefinitely. By equipping Helm of the Host to your original Kodama, you generate a nonlegendary token copy of the creature, allowing both Kodamas to trigger whenever a permanent enters the battlefield. When you play Izzet Boilerworks, its own bounce ability triggers alongside both Kodama abilities, creating a cascading exchange where the Boilerworks constantly returns to your hand and drops right back onto the battlefield.