Activate Leafkin Druid by tapping it, adding {G}{G}.
Activate Scryb Ranger by returning it from the battlefield to your hand, untapping Leafkin Druid.
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

Leafkin Druid

Activate Leafkin Druid 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 Leafkin Druid.
Repeat.

Wirewood Symbiote

Mirror Entity

Activate Marvin using Leafkin Druid'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 Leafkin Druid 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 Leafkin Druid.
Resolve the last Tolarian Kraken trigger, choosing not to pay.
Repeat.

Infinite card draw

Infinite draw triggers

Arcanis the Omnipotent

Tolarian Kraken

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

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Sword of the Paruns

Power Artifact

Activate Rex using Leafkin Druid'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 "Leafkin Druid"