Springheart Nantuko + Mutable Explorer + Lotus Cobra + Horizon Explorer

Springheart Nantuko

Mutable Explorer

Lotus Cobra

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 Lotus Cobra trigger.
5. Holding priority, activate the Mutavault token by tapping it, adding C.
6. Resolve the Lotus Cobra trigger, adding .
7. Resolve the Springheart Nantuko trigger, causing you to pay 1 to create a token copy of Mutable Explorer.
8. Repeat from step 3.

This mesmerizing loop transforms a simple land drop into an engine of endless replication, anchored by Horizon Explorer keeping your new lands entering untapped. As Springheart Nantuko copies Mutable Explorer over and over, every iteration drops a fresh Mutavault token onto the battlefield. This sudden flood of land entries triggers Lotus Cobra to supply the exact green mana needed to sustain Springheart Nantuko's landfall cost, turning a cascade of changelings into an endless sea of tokens and triggers.