Springheart Nantuko, Spelunking, Selesnya Sanctuary, and Icetill Explorer

Prerequisites

• Springheart Nantuko on the battlefield
• Spelunking on the battlefield
• Selesnya Sanctuary in hand
• Icetill Explorer on the battlefield

Steps

1. Play Selesnya Sanctuary
2. When it enters untapped due to Spelunking, Selesnya Sanctuary and Springheart Nantuko trigger
3. Holding priority, activate Selesnya Sanctuary by tapping it, adding
4. Resolve the Selesnya Sanctuary trigger, returning it from the battlefield to your hand
5. Resolve the Springheart Nantuko trigger, causing you to pay to create a token copy of Icetill Explorer
6. Because of the additional Icetill Explorer token, you can play an additional land this turn
7. Repeat

Results

• Infinite ETB
• Infinite creature tokens
• Infinite landfall triggers
• Infinite card draw
• Infinite draw triggers
• Infinite green mana
• Infinite white mana