Cast Scouting Trek by paying {1}{G}, searching your library for any number of basic land cards and putting them on top of your library.
Cast Cultivator Colossus by paying {4}{G}{G}{G}.
When Cultivator Colossus enters the battlefield, it triggers, causing you to put a land card from your hand onto the battlefield, and then draw a card.
The process in step 3 repeats until you are unable to put a land onto the battlefield.

Put all basic lands from your library onto the battlefield

Cultivator Colossus

Scouting Trek

Cast Scouting Trek by paying {1}{G}, searching your library for all basic lands in your library and putting them on top.
Play any land.
The land enters the battlefield, triggering Retreat to Coralhelm, causing you to scry 1, ensuring to leave the basic land on top of your library.
Galadriel triggers, causing you to reveal the basic land on top of your library and put it onto the battlefield tapped.
Repeat from step 3.

Near-infinite landfall triggers

Put all basic lands from your library onto the battlefield tapped

Galadriel of Lothlórien

Retreat to Coralhelm

Cast Scouting Trek by paying {1}{G}, searching your library for all basic land cards and putting them onto the top of your library.
Play a land.
When the land enters, Icetill Explorer triggers, causing you to mill a card.
As the milled card will be a land, Hedge Shredder's second ability triggers, putting the land from your graveyard onto the battlefield tapped.
Repeat step 3 until you do not mill a land.

Icetill Explorer

Hedge Shredder

Cast Scouting Trek by paying {1}{G}, searching your library for all basic land cards and putting them onto the top of your library.
Play a land.
When the land enters, Sapling Nursery triggers, creating a 3/4 Treefolk creature token.
When the Treefolk enters, Fecund Greenshell triggers, putting the top card of your library onto the battlefield tapped as it will be a land.
Repeat from step 3 until the top card of your library isn't a land.

Combos with "Scouting Trek"