Kodama of the East Tree + Petrified Field + Echoing Deeps + Horizon Explorer + Thranduil, Sindarin Liege // Silvan Rally

Kodama of the East Tree

Petrified Field

Echoing Deeps

Horizon Explorer

Thranduil, Sindarin Liege // Silvan Rally

How it works

1. Play Petrified Field.
2. When Petrified Field enters the battlefield, Kodama of the East Tree and Thranduil, Sindarin Liege 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 Thranduil, Sindarin Liege 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, Thranduil, Sindarin Liege 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 Thranduil, Sindarin Liege 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, Thranduil, Sindarin Liege triggers.
12. Repeat from step 4.

This looping engine turns a simple land drop into an endless cascade of triggers by bouncing the same two lands back and forth from the graveyard. Whenever a land enters, Thranduil, Sindarin Liege creates an Elf token, which in turn triggers Kodama of the East Tree to cheat another land into play from your hand. By sacrificing Petrified Field to return Echoing Deeps to your hand—and then immediately doing the reverse when Echoing Deeps enters as a copy of Petrified Field—you perpetuate an infinite cycle. Meanwhile, Horizon Explorer ensures that every single piece of land entering the battlefield does so completely untapped, keeping your mana completely free while generating infinite creatures and landfall triggers.