Search your library for a Plains, Island, Swamp, or Mountain card and put it onto the battlefield tapped. Then shuffle your library.
"How truly vast this city must be, that I have traveled so far and seen so much, yet never once found the place where the buildings fail."
- 7/1/2012: The card can have other land types, including Forest, as long as it also has one of the listed land types.
Decks using Farseek
Magic 2013 #170
Ravnica: City of Guilds #163