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

Kodama of the East Tree

Petrified Field

Echoing Deeps

Felidar Retreat

Horizon Explorer

How it works

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

This clever loop turns land drops into an endless cycle of creation, fueled by Kodama of the East Tree's triggered ability whenever a permanent enters. As Felidar Retreat triggers off each land and token arrival, it supplies the continuous stream of creature tokens needed to trigger Kodama over and over again. Meanwhile, Horizon Explorer ensures your lands enter the battlefield untapped and ready to contribute. By bouncing Petrified Field and Echoing Deeps back and forth from the graveyard using their own sacrifice abilities, you sustain an infinitely repeating engine that floods the board with infinite creature tokens, enter-the-battlefield effects, and landfall triggers.