Kodama of the East Tree + Petrified Field + Echoing Deeps + Sporemound + Horizon Explorer

Kodama of the East Tree

Petrified Field

Echoing Deeps

Sporemound

Horizon Explorer

How it works

1. Play Petrified Field.
2. When Petrified Field enters the battlefield, Kodama of the East Tree and Sporemound trigger.
3. Resolve the Kodama of the East Tree trigger, putting nothing onto the battlefield.
4. Holding priority, activate Petrified Field's second ability by tapping and sacrificing it, returning Echoing Deeps from your graveyard to your hand.
5. Resolve the Sporemound trigger, creating a token.
6. When the token enters the battlefield, Kodama of the East Tree triggers, putting Echoing Deeps from your hand onto the battlefield untapped as a copy of Petrified Field.
7. When Echoing Deeps enters the battlefield, Sporemound triggers.
8. Holding priority, activate Echoing Deeps using Petrified Field's second ability by tapping and sacrificing it, returning Petrified Field from your graveyard to your hand.
9. Resolve the Sporemound trigger, creating a token.
10. When the token enters the battlefield, Kodama of the East Tree triggers, putting Petrified Field from your hand onto the battlefield.
11. When Petrified Field enters the battlefield, Sporemound triggers.
12. Repeat from step 4.

This loop is a masterclass in recursive land recycling, powered by Kodama of the East Tree and Sporemound working in tandem to translate every land drop into a flurry of creature tokens. As these land-into-creature triggers ripple outward, Horizon Explorer ensures your evolving board enters completely untapped and ready for action. The real engine of this self-sustaining loop lies in the graveyard shuffle between Petrified Field and Echoing Deeps; by sacrificing one to retrieve the other, each iteration uses the freshly copied land to fish back the original piece.