Activate Greenweaver Druid by tapping it, adding six {G}.
Activate Greenweaver Druid by paying {3} and untapping it, giving itself +2/+2 until end of turn.
Repeat.

Infinitely large Greenweaver Druid until end of turn

Infinite green mana

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Infinitely large creature until end of turn

Greenweaver Druid

Umbral Mantle

Nyxbloom Ancient

Activate Greenweaver Druid by tapping it, adding {G}{G}{G}{G}.
Activate Greenweaver Druid by paying {3} and untapping it, giving itself +2/+2 until end of turn.
Repeat.

Mana Reflection

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

Infinite LTB

Infinite ETB

Infinite storm count

Infinite landfall triggers

Ashaya, Soul of the Wild

Scryb Ranger

Activate Greenweaver 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 Greenweaver Druid.
Repeat.

Wirewood Symbiote

Mirror Entity

Activate Marvin using Greenweaver 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 Greenweaver Druid by tapping it, adding {G}{G}.
Activate Greenweaver Druid by paying {1} and untapping it, giving itself +2/+2 until end of turn.
Repeat.

Training Grounds

Biomancer's Familiar

Activate Greenweaver 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 Greenweaver Druid.
Resolve the last Tolarian Kraken trigger, choosing not to pay.
Repeat.

Infinite card draw

Infinite draw triggers

Arcanis the Omnipotent

Tolarian Kraken

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

Sword of the Paruns

Power Artifact

Activate Rex using Greenweaver 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 "Greenweaver Druid"