Springheart Nantuko + Overlord of the Hauntwoods + Exalted Sunborn + Horizon Explorer

Springheart Nantuko

Overlord of the Hauntwoods

Exalted Sunborn

Horizon Explorer

How it works

1. Declare Overlord of the Hauntwoods as an attacker.
2. Overlord of the Hauntwoods triggers, creating two tapped Everywhere land tokens.
3. When the Everywhere tokens enter the battlefield, Springheart Nantuko and Horizon Explorer each trigger twice.
4. Resolve all Horizon Explorer triggers, untapping the lands.
5. Holding priority, activate the Everywhere tokens by tapping them, adding 1.
6. Resolve the first Springheart Nantuko trigger, choosing not to pay and creating two 1/1 Insect creature tokens.
7. Resolve the second Springheart Nantuko trigger, causing you to pay 1 to create two token copies of Overlord of the Hauntwoods.
8. When the Overlord of the Hauntwoods tokens enters the battlefield, they trigger.
9. Resolve the first trigger, creating two tapped Everywhere land tokens.
10. Repeat from step 3.

This engine is a masterclass in compounding triggers, fueled by the staggering token-doubling power of Exalted Sunborn. When you declare Overlord of the Hauntwoods as an attacker, its ability normally spawns a land, but Sunborn ensures two Everywhere tokens enter the battlefield instead. Those entries simultaneously feed Horizon Explorer's static ability—keeping your lands untapped for instant activation—and trigger Springheart Nantuko twice. By choosing to pay the landfall cost on one Nantuko trigger while declining the other, you generate a pair of fresh Overlord of the Hauntwoods token copies along with disposable Insect tokens, completely refunding the mana through the Everywhere tokens' intrinsic abilities and setting off an infinite cascade of attackers, lands, and creatures.