Play Gruul Turf.
When Gruul Turf enters the battlefield, it, Sarinth Greatwurm, and Kodama of the East Tree trigger.
Resolve the Kodama of the East Tree trigger, choosing not to put anything from your hand onto the battlefield.
Resolve the Gruul Turf trigger, returning it from the battlefield to your hand.
Resolve the Sarinth Greatwurm trigger, creating a token.
When the token enters the battlefield, Kodama triggers, putting Gruul Turf from your hand onto the battlefield.
When Gruul Turf enters the battlefield, it and Sarinth Greatwurm trigger.
Repeat from step 4.

Infinite landfall triggers

Infinite tapped Powerstone tokens

Kodama of the East Tree

Sarinth Greatwurm

Gruul Turf

Play a basic Forest card from your hand.
Kodama and Sarinth Greatwurm's first ability trigger.
Resolve the Kodama trigger, choosing to put nothing onto the battlefield from your hand.
Holding priority, activate the basic Forest by tapping it, adding {G}.
Resolve the Sarinth Greatwurm trigger, creating a tapped Powerstone artifact token.
When the Powerstone token enters the battlefield, Kodama triggers.
Holding priority, activate Living Twister's second ability by paying {G}, returning the Forest from the battlefield to your hand.
Resolve the Kodama trigger, putting the Forest onto the battlefield from your hand.
When the Forest enters the battlefield, Sarinth Greatwurm triggers.
Repeat from step 4.

Living Twister

Fetch a land using Blighted Woodland.
When the fetched land enters, Sarinth Greatwurm and Kodama trigger.
Resolve the Kodama trigger, putting Ghost Town from your hand onto the battlefield.
When Ghost Town enters, Kodama and Sarinth Greatwurm trigger.
Holding priority, activate Ghost Town's first abiltiy by tapping it, adding {C}.
Activate Ghost Town's second ability by paying {0}, returning it from the battlefield to your hand.
Resolve the Sarinth Greatwurm from step 4, creating a token.
When the token enters, Kodama triggers, putting Ghost Town from your hand onto the battlefield.
When Ghost Town enters, Sarinth Greatwurm triggers.
Repeat from step 5.

Infinite colorless mana

Ghost Town

Blighted Woodland

Activate two lands by tapping them, adding at least {2}.
Activate Oboro Breezecaller by paying {2} and returning one of the lands from the battlefield to your hand, untapping the other land.
Play the land returned to your hand in step 2.
When the land enters the battlefield, Kodama and Sarinth Greatwurm trigger.
Resolve the Kodama trigger, putting nothing onto the battlefield.
Resolve the Sarinth Greatwurm trigger, creating a token.
When the token enters the battlefield, Kodama triggers.
Holding priority, activate two lands by tapping them, adding at least {2}.
Activate Oboro Breezecaller by paying {2} and returning one of the lands from the battlefield to your hand, untapping the other land.
Resolve the Kodama trigger from step 7, putting the land returned to your hand onto the battlefield.
When the land enters the battlefield, Sarinth Greatwurm triggers, creating a token.
Repeat from step 7.

Oboro Breezecaller

Play Dakmor Salvage.
When Dakmor Salvage enters, Sarinth Greatwurm and Kodama trigger.
Resolve the Kodama trigger, choosing to put nothing onto the battlefield.
Holding priority, activate Zuran Orb by sacrificing Dakmor Salvage.
The Gitrog Monster's second ability triggers, causing you to mill two cards and return Dakmor Salvage from your graveyard to your hand.
If a land was milled this way, The Gitrog Monster's second ability triggers, causing you to draw a card.
Resolve the Zuran Orb ability
Resolve the Sarinth Greatwurm trigger, creating a token.
When the token enters the battlefield, Kodama triggers, putting Dakmor Salvage from your hand onto the battlefield.
When Dakmor Salvage enters the battlefield, Sarinth Greatwurm triggers.
Repeat from step 4.

Near-infinite lifegain

Near-infinite lifegain triggers

Near-infinite ETB

Near-infinite landfall triggers

Near-infinite card draw

Near-infinite draw triggers

Near-infinite tapped Powerstone tokens

Infinite self-mill

Near-infinite self-discard triggers

The Gitrog Monster

Dakmor Salvage

Zuran Orb

Play Petrified Field.
When Petrified Field enters the battlefield, Kodama of the East Tree and Sarinth Greatwurm trigger.
Resolve the Kodama of the East Tree trigger, putting nothing onto the battlefield.
Holding priority, activate Petrified Field's second ability by tapping and sacrificing it, returning Echoing Deeps from your graveyard to your hand.
Resolve the Sarinth Greatwurm trigger, creating a token.
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.
When Echoing Deeps enters the battlefield, Sarinth Greatwurm triggers.
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.
Resolve the Sarinth Greatwurm trigger, creating a token.
When the token enters the battlefield, Kodama of the East Tree triggers, putting Petrified Field from your hand onto the battlefield.
When Petrified Field enters the battlefield, Sarinth Greatwurm triggers.
Repeat from step 4.

Petrified Field

Echoing Deeps

Horizon Explorer

Play Petrified Field.
When Petrified Field enters the battlefield, Kodama of the East Tree and Sarinth Greatwurm trigger.
Resolve the Kodama of the East Tree trigger, putting nothing onto the battlefield.
Holding priority, activate Petrified Field's second ability by tapping and sacrificing it, returning Echoing Deeps from your graveyard to your hand.
Resolve the Sarinth Greatwurm trigger, creating a token.
When the token enters the battlefield, Kodama of the East Tree triggers, putting Echoing Deeps from your hand onto the battlefield as a copy of Petrified Field.
When Echoing Deeps enters the battlefield, Sarinth Greatwurm and Tiller Engine trigger.
Resolve the Tiller Engine trigger, untapping Echoing Deeps.
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.
Resolve the Sarinth Greatwurm trigger, creating a token.
When the token enters the battlefield, Kodama of the East Tree triggers, putting Petrified Field from your hand onto the battlefield.
When Petrified Field enters the battlefield, Sarinth Greatwurm triggers.
Repeat from step 4.

Combos with "Sarinth Greatwurm"