Galadriel of Lothlórien and Retreat to Coralhelm on the battlefield.
You have a land card in hand.
({1} magic symbol) ({G} magic symbol) available.
Steps
Cast Scouting Trek by paying ({1} magic symbol) ({G} magic symbol) , 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.
Results
Near-infinite landfall triggers.
Put all basic lands from your library onto the battlefield tapped.