Text (FS+errata): If you control four or fewer lands, search your library for a basic land card, put it onto the battlefield tapped, then shuffle your library. ; Cycling-Sacrifice a land. [Oracle 2009/07/08]
You do not have to find a basic land card if you don't want to, even if one is there. See Rule 701.14. [D'Angelo 2007/05/15]
