Land — Island Swamp

({T}: Add {U} or {B}.)
Sunken Hollow enters the battlefield tapped unless you control two or more basic lands.

Isengard began to fill up with black creeping streams and pools. The waters found their way down into shafts and spout holes, until at last Isengard looked like a huge flat saucepan, all steaming and bubbling.

Artist(s): Pavel Kolomeyets