Springheart Nantuko + Mutable Explorer + Tireless Provisioner + Horizon Explorer

Springheart Nantuko

Mutable Explorer

Tireless Provisioner

Horizon Explorer

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 Horizon Explorer.
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, anchored by Springheart Nantuko's landfall ability to repeatedly copy Mutable Explorer. Each iteration feeds on itself: the new Mutable Explorer brings a Mutavault token onto the battlefield untapped thanks to Horizon Explorer's passive sturdiness, which in turn triggers Tireless Provisioner to generate the mana needed to keep the cycle spinning. By converting your newly minted Treasures into the exact green mana required, you can sustain the Nantuko's toll indefinitely while generating an endless tide of creature and land tokens.