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
Thaumatog 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.
Infinite mana lands you control can produce.
Infinite colored mana.
Put all lands from your library and graveyard onto the battlefield tapped.