Vast Desolation

{t}: Add {c}.
{5}, {t}, Sacrifice Vast Desolation: Search your
library for a land card without any basic land
types, put it onto the battlefield tapped, then
shuffle. (The basic land types are: Plains, Island,
Swamp, Mountain, and Forest.)
Travel far enough, and you'll find any number of
types of ruins. None of which can support life.