Kodama of the East Tree, Selesnya Sanctuary, and Felidar Retreat

Prerequisites

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

Steps

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

Results

• Infinite creature tokens
• Infinite ETB
• Infinite landfall triggers