Scouting Trek + Fecund Greenshell + Sapling Nursery

Scouting Trek

Fecund Greenshell

Sapling Nursery

How it works

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