Activate Fyndhorn Elder by tapping it, adding {G}{G}.
Activate Scryb Ranger by returning it from the battlefield to your hand, untapping Fyndhorn Elder.
Cast Scryb Ranger by paying {1}{G}.
Repeat.

Infinite LTB

Infinite ETB

Infinite storm count

Infinite green mana

Infinite landfall triggers

Ashaya, Soul of the Wild

Scryb Ranger

Fyndhorn Elder

Activate Fyndhorn Elder by tapping it, adding {G}{G}.
Cast Wirewood Symbiote by paying {G}.
Activate Mirror Entity by paying {1}, giving creatures you control all creature types and base power and toughness 1/1 until end of turn.
Activate Wirewood Symbiote by returning it from the battlefield to your hand, untapping Fyndhorn Elder.
Repeat.

Wirewood Symbiote

Mirror Entity

Activate Marvin using Fyndhorn Elder's ability by tapping it, adding {G}{G}.
Activate Marvin using Pili-Pala's ability by paying {2} and untapping it, adding one mana of any color.
Repeat.

Infinite colored mana

Marvin, Murderous Mimic

Pili-Pala

Activate Fyndhorn Elder by tapping it, adding {G}{G}.
Activate Arcanis's first ability by tapping it, causing you to draw three cards.
Tolarian Kraken triggers three times. Resolve the first two triggers, causing you to pay {2} to untap Arcanis and Fyndhorn Elder.
Resolve the last Tolarian Kraken trigger, choosing not to pay.
Repeat.

Infinite card draw

Infinite draw triggers

Arcanis the Omnipotent

Tolarian Kraken

Activate Fyndhorn Elder by tapping it, adding {G}{G}.
Activate Sword of the Paruns by paying {1}, untapping Fyndhorn Elder.
Repeat.

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Sword of the Paruns

Power Artifact

Activate Rex using Fyndhorn Elder's ability by tapping it, adding {G}{G}.
Activate Rex using Pili-Pala's ability by paying {2} and untapping it, adding one mana of any color.
Repeat.

Combos with "Fyndhorn Elder"