Magic The Gathering M13 Core Set Spoiler - Boundless Realms

Boundless Realms - #162/249 - Rare
Sorcery

Search your library for X basic land cards, where X is the number of lands you control, and put them onto the battlefield tapped. Then shuffle your library.

"Planeswalking cannot be taught. Either you see the doors or you do not."
-Nissa Revane

Illustrator: Cliff Childs

Source: Wizards