Springheart Nantuko + Mutable Explorer + Tireless Provisioner + Elspeth, Storm Slayer

Springheart Nantuko

Mutable Explorer

Tireless Provisioner

Elspeth, Storm Slayer

How it works

1. Play a land.
2. When the land enters, Springheart Nantuko triggers, causing you to pay 1 to create two token copies of Mutable Explorer.
3. When the Mutable Explorer tokens enter, they trigger.
4. Resolve the first Mutable Explorer trigger, creating two Mutavault land tokens that enters tapped.
5. When the Mutavault tokens enter, Springheart Nantuko and Tireless Provisioner each trigger twice.
6. Resolve the Tireless Provisioner triggers, creating two Treasure tokens.
7. Holding priority, activate the Treasures by tapping and sacrificing them, adding 1.
8. Resolve the Springheart Nantuko trigger, causing you to pay 1 to create two token copies of Mutable Explorer.
9. Repeat from step 3.

This ingenious loop relies on a brilliant compounding effect where every land drop sparks an escalating chain reaction. When you play a land, Springheart Nantuko triggers to copy your creatures, but it is Elspeth, Storm Slayer sitting quietly on the battlefield that supercharges the engine by doubling every single token created into a pair instead. As those token copies of Mutable Explorer flood the board, they immediately generate Mutavault tokens that count as fresh land drops, which in turn feed Tireless Provisioner to fund the mana needed to keep Springheart Nantuko's landfall ability going infinitely.