Kodama of the East Tree, Helm of the Host, and Arid Archway

Prerequisites

• Kodama of the East Tree on the battlefield
• Helm of the Host on the battlefield
• Arid Archway in hand

Steps

1. Create a nonlegendary copy of Kodama of the East Tree using Helm of the Host (this may involve additional steps depending on the card used)
2. Play Arid Archway
3. When Arid Archway enters, both Kodama of the East Trees and Arid Archway trigger
4. Resolve the nonlegendary Kodama of the East Tree trigger, choosing not to put anything from your hand onto the battlefield
5. Resolve the Arid Archway trigger, returning it to your hand
6. Resolve the legendary Kodama of the East Tree trigger, putting Arid Archway onto the battlefield
7. The nonlegendary Kodama of the East Tree and Arid Archway trigger
8. Resolve the Arid Archway trigger, returning it to your hand
9. Resolve the nonlegendary Kodama of the East Tree's trigger, putting Arid Archway onto the battlefield
10. The legendary Kodama of the East Tree and Arid Archway trigger
11. Repeat from step 5

Results

• Infinite landfall triggers