Activate the enchanted basic land by tapping it, creating a 1/1 green Squirrel creature token.
Activate Earthcraft by tapping an untapped creature you control, untapping the enchanted basic land.
Repeat.

Infinite creature ETB

Infinite tapped creature tokens

Earthcraft

Squirrel Nest

Activate the land with Squirrel Nest attached by tapping it, creating a 1/1 Squirrel creature token.
When the Squirrel enters, Intruder Alarm triggers, untapping all creatures.
Activate Kiora's Follower by tapping it, untapping the land with Squirrel Nest attached.
Repeat.

Infinite creature tokens

Infinite mana creatures you control can produce

Infinite untap of creatures

Intruder Alarm

Kiora's Follower

Activate Dryad Arbor's Squirrel Nest ability by tapping it, creating a 1/1 green Squirrel token.
Intruder Alarm triggers, untapping all creatures.
Repeat.

Dryad Arbor

Animate the land that has Squirrel Nest attached using Destiny Spinner.
Activate the land with Squirrel Nest attached by tapping it, creating a 1/1 Squirrel creature token.
When the Squirrel enters, Intruder Alarm triggers, untapping all creatures.
Repeat from step 2.

Destiny Spinner

Activate Midnight Guard by tapping it, creating a 1/1 Squirrel creature token.
When the Squirrel enters the battlefield, Midnight Guard triggers, untapping it.
Repeat.

Midnight Guard

Ashaya, Soul of the Wild

Activate Sunstrike Legionnaire by tapping it, creating a 1/1 Squirrel creature token.
When the Squirrel enters the battlefield, Sunstrike Legionnaire triggers, untapping it.
Repeat.

Combos with "Squirrel Nest"