Kodama of the East Tree, Dimir Aqueduct, and Felidar Retreat

Prerequisites

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

Steps

1. Play Dimir Aqueduct
2. When Dimir Aqueduct 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 Dimir Aqueduct 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 Dimir Aqueduct from your hand onto the battlefield
7. When Dimir Aqueduct enters the battlefield, it and Felidar Retreat trigger
8. Repeat from step 4

Results

• Infinite creature tokens
• Infinite ETB
• Infinite landfall triggers