Stone-Seeder Hierophant without summoning sickness).
Easy Prerequisites
You have at least two lands between the battlefield and your graveyard.
You have a land card in hand.
You are able to play a land this turn.
You control a land that can tap to produce at least ({G} magic symbol) .
Mana Needed
({1} magic symbol) ({G} magic symbol) available.
Steps
Play any land.
When the land enters the battlefield,
Springheart Nantuko triggers.
Holding priority, activate
Lithatog by sacrificing a land.
Repeat step 3 until you control no lands.
Resolve the
Springheart Nantuko trigger, causing you to pay ({1} magic symbol) ({G} magic symbol) to create a token copy of
Lumra.
Put the token
Lumra into your graveyard due to the legend rule.
The
Lumra token's enter-the-battlefield ability triggers, causing you to mill four cards and returning all lands from your graveyard to the battlefield tapped.
When the lands enter the battlefield,
Springheart Nantuko and
Stone-Seeder Hierophant trigger that many times.
Resolve a
Stone-Seeder Hierophant trigger, untapping it.
Activate
Stone-Seeder Hierophant by tapping it, untapping a land.
Activate the land by tapping it, adding at least ({G} magic symbol) .
Repeat from step 9 for each remaining
Stone-Seeder Hierophant trigger.
Resolve all but one
Springheart Nantuko trigger, choosing not to pay and creating that many 1/1 Insect creature tokens.
Repeat from step 3.
Results
Infinite LTB.
Infinite ETB.
Infinite death triggers.
Infinite self-mill.
Infinite landfall triggers.
Infinitely large
Lithatog until end of turn.
Infinite mana lands you control can produce.
Infinite untap of lands you control.
Infinite colored mana.
Put all land cards from your library and graveyard onto the battlefield tapped.