Kodama of the East Tree, Arid Archway, and Felidar Retreat

Prerequisites

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

Steps

1. Play Arid Archway
2. When Arid Archway enters the battlefield, it, Felidar Retreat, 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 Felidar Retreat 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 Felidar Retreat trigger
8. Repeat from step 4

Results

• Infinite ETB
• Infinite creature tokens
• Infinite landfall triggers