At least half of the basic land cards in your library are Forests.
Mana Needed
({1} magic symbol) ({G} magic symbol) available.
Steps
Play a land.
When the land enters,
Springheart Nantuko triggers, causing you to pay ({1} magic symbol) ({G} magic symbol) to create a token copy of
Avatar of Growth.
When the
Avatar of Growth token enters, it triggers, causing each player to search their library for up to two basic land cards and put them onto the battefield. Search for a Forest and any other basic land.
When the basic lands enter,
Springheart Nantuko triggers twice.
Holding priority, activate two lands by tapping them, adding ({1} magic symbol) ({G} magic symbol) .
Resolve the first
Springheart Nantuko trigger, choosing not to pay and creating a 1/1 Insect creature token.
Resolve the second
Springheart Nantuko trigger, causing you to pay ({1} magic symbol) ({G} magic symbol) to create a token copy of
Avatar of Growth.
Repeat from step 3 until your library contains no basic lands.
Notes
You can perform this combo if fewer than half the basic lands in your library are Forests, but in that case you won't be able to find all your basic lands unless you pay an additional ({G} magic symbol) per additional pair of non-Forest lands once you run out of Forests.
Results
Each opponent puts all basic lands from their library onto the battlefield.
Near-infinite creature ETB.
Near-infinite creature tokens.
Near-infinite landfall triggers of all players.
Put all basic lands from your library onto the battlefield tapped.
Metadata
Bracket tag
SpicyBracket 3-4+
Probably 3 or 4, but hard to classify
1
2
3
4
5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.