Springheart Nantuko, and Elspeth, Storm Slayer

Prerequisites

• Springheart Nantuko in hand
• Elspeth, Storm Slayer on the battlefield
• plus enough mana to animate the land available

Steps

1. Earthbend a land that can tap to produce at least , thus animating it
2. Cast Springheart Nantuko for its bestow cost by paying , attaching it to the animated land
3. Play any land
4. When the land enters the battlefield, Springheart Nantuko triggers, causing you to pay to create two token copies of the land it is attached to due to Elspeth, Storm Slayer
5. When the land tokens enter the battlefield, Springheart Nantuko triggers twice
6. Holding priority, activate the two land tokens by tapping them, adding at least
7. Resolve the first Springheart Nantuko trigger, choosing not to pay and create two 1/1 Insect creature tokens due to Elspeth, Storm Slayer Resolve the second trigger, causing you to pay to create two token copies of the land it is attached to due to Elspeth, Storm Slayer
8. Repeat from step 5

Results

• Infinite ETB
• Infinite creature tokens
• Infinite landfall triggers
• Infinite tapped land tokens