Map the Unreal

Dreamwalk 1 (As you cast this spell, you may
tap an untapped creature you control. If you do, it
doesn't untap during your next untap step.)
Search your library for a basic land card, put it
onto the battlefield tapped, then shuffle your
library. If you dreamwalked, instead search
your library for two basic lands, put them
onto the battlefield tapped, then shuffle
your library.