Springheart Nantuko, Mutable Explorer, Squandered Resources, and Earthcraft

Prerequisites

• Springheart Nantuko on the battlefield
• Mutable Explorer on the battlefield
• Squandered Resources on the battlefield
• Earthcraft on the battlefield
• available

Steps

1. Play a land
2. When the land enters, Springheart Nantuko triggers, causing you to pay to create a token copy of Mutable Explorer
3. When the Mutable Explorer token enters, it trigger
4. Holding priority, activate Earthcraft by tapping the Mutable Explorer token, untapping a basic Forest
5. Activate the Forest by tapping it, adding
6. Resolve the Mutable Explorer trigger, creating a Mutavault land token that enters tapped
7. When the Mutavault token enters, Springheart Nantuko triggers
8. Holding priority, activate Squandered Resources by sacrificing the Mutavault token, adding
9. Resolve the Springheart Nantuko trigger, causing you to pay to create two token copies of Mutable Explorer
10. Repeat from step 3

Results

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