Activate the land with Shimmerwilds Growth attached by tapping it, adding {1}.
Shimmerwilds Growth triggers, adding {1}.
Activate Silvanus's Invoker by paying {1}, untapping Gruul Turf and causing it to become an 8/8 Elemental with trample and haste in addition to its other types until end of turn.
Repeat.

Infinite mana lands you control can produce

Infinite power and toughness for most creatures you control until end of turn

Infinite untap of lands you control

Agatha of the Vile Cauldron

Silvanus's Invoker

Shimmerwilds Growth

Activate Ant Queen by paying {1}{G}, creating a creature token
Activate Earthcraft by tapping the creature token, untapping a basic Forest.
Activate the Forest by tapping it, adding {G}
Shimmerwilds Growth triggers, adding {1}
Repeat

Infinite creature ETB

Infinite tapped creature tokens

Earthcraft

Ant Queen

Activate Staff of Domination by tapping it, adding {G} as it's a Forest land due to Toph and Yavimaya.
Shimmerwilds Growth triggers, adding {G}.
Activate Staff of Domination's first ability by paying {1}, untapping it.
Repeat.

Infinite card draw

Infinite draw triggers

Infinite green mana

Infinite lifegain

Infinite lifegain triggers

Infinite mana creatures you control can produce

Infinite untap of creatures you control

Toph, the First Metalbender

Yavimaya, Cradle of Growth

Staff of Domination

Play the land that taps for multiple mana.
That land enters as a creature due to Living Plane, triggering Vigean Graftmage's Graft ability, allowing you to move a +1/+1 counter from Vigean Graftmage to that land.
Cast Shimmerwilds Growth by paying {1}{G}, attaching it to that land and choosing "blue".
Activate that land by tapping it, adding at least two mana.
Shimmerwilds Growth triggers, adding at least one additional mana.
Activate Vigean Graftmage by paying {1}{U}, untapping the land creature.
Repeat.

Land that adds at least two mana

Haste Enabler

Vigean Graftmage

Living Plane

Combos with "Shimmerwilds Growth"