When the fetched land enters, Scute Swarm and Kodama trigger.
Resolve the Kodama trigger, putting Ghost Town from your hand onto the battlefield.
When Ghost Town enters, Kodama and Scute Swarm 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 Scute Swarm 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, Scute Swarm triggers.
Repeat from step 5.
This brilliant loop relies on Kodama of the East Tree acting as a bridge to translate one permanent entering into a cascade of free deployments from your hand. By using Bloodstained Mire to fetch your initial land, you trigger Scute Swarm to start populating the board while Kodama lets you sneak Ghost Town into play. Once Ghost Town is on the battlefield, its ability to bounce itself back to your hand for zero mana—combined with the mana it produces when tapped—allows you to infinitely replay it off every new token generated by Scute Swarm.