Thror's Map

2,{t}, Sacrifice Thror's Map: Search your
library for a basic land card and put it onto the
battlefield tapped. Then shuffle your library. If
you control Thror's Key, also search your
library for a creature card, reveal it, shuffle your
library and put that card on top of it.

"Far over the Misty Mountains cold.
To dungeons deep and caverns old.
We must away, ere break of day.
To find our long forgotten gold."