Kodama of the East Tree, Sarinth Greatwurm, and Arid Archway

Prerequisites

• Kodama of the East Tree on the battlefield
• Sarinth Greatwurm on the battlefield
• Arid Archway in hand
• You are able to play a land this turn

Steps

1. Play Arid Archway
2. When Arid Archway enters the battlefield, it, Sarinth Greatwurm, and Kodama of the East Tree trigger
3. Resolve the Kodama of the East Tree trigger, choosing not to put anything from your hand onto the battlefield
4. Resolve the Arid Archway trigger, returning it from the battlefield to your hand
5. Resolve the Sarinth Greatwurm trigger, creating a token
6. When the token enters the battlefield, Kodama triggers, putting Arid Archway from your hand onto the battlefield
7. When Arid Archway enters the battlefield, it and Sarinth Greatwurm trigger
8. Repeat from step 4

Results

• Infinite landfall triggers
• Infinite tapped Powerstone tokens