Springheart Nantuko + Mutable Explorer + Spelunking + Tireless Provisioner

Springheart Nantuko

Mutable Explorer

Spelunking

Tireless Provisioner

How it works

1. Play a land.
2. When the land enters, Springheart Nantuko triggers, causing you to pay 1 to create a token copy of Mutable Explorer.
3. When the Mutable Explorer token enters, it triggers, creating a Mutavault land token that enters untapped due to Spelunking.
4. When the Mutavault token enters, Springheart Nantuko and Tireless Provisioner trigger.
5. Holding priority, activate the Mutavault token by tapping it, adding C.
6. Resolve the Tireless Provisioner trigger, creating a Treasure token.
7. Holding priority, activate the Treasure by tapping and sacrificing it, adding .
8. Resolve the Springheart Nantuko trigger, causing you to pay 1 to create a token copy of Mutable Explorer.
9. Repeat from step 3.

This elegant loop turns a simple land drop into an engine of endless replication, leveraging Spelunking's static ability to ensure every generated Mutavault enters the battlefield untapped. With that steady flow of land entries, Springheart Nantuko copies Mutable Explorer over and over again, while Tireless Provisioner converts each new land into the mana required to keep the cycle going. Because Mutable Explorer's own entry continually triggers to spawn more Mutavaults, the entire chain feeds itself to produce an infinite army of changelings, treasures, and landfall triggers.