(Flooded Timberland isn't a spell.)
Flooded Timberland enters the battlefield tapped unless you pay 2 life.
Flooded Timberland is indestructible. (Destroy effects and lethal damage don't destroy it.)
, Pay 1 life, Sacrifice Flooded Timberland: Search your library for a Forest or Island card and put it onto the battlefield, then shuffle your library.