Kodama of the East Tree + Petrified Field + Echoing Deeps + Toggo, Goblin Weaponsmith + Archelos, Lagoon Mystic

Kodama of the East Tree

Petrified Field

Echoing Deeps

Toggo, Goblin Weaponsmith

Archelos, Lagoon Mystic

How it works

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

This clever loop relies on the land-recycling partnership of Petrified Field and Echoing Deeps, which trade places back and forth from the graveyard while feeding the rest of your board. Every time one of these lands enters the battlefield, Toggo, Goblin Weaponsmith triggers to create a Rock token, whose own entry triggers Kodama of the East Tree to instantly drop the other land from your hand. Meanwhile, Archelos, Lagoon Mystic quietly ensures that your lands and tokens enter ready for action by controlling whether they enter tapped or untapped.