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.

Combos with "Sarinth Greatwurm"