When Timberline Marsh enters the battlefield, sacrifice it unless you pay .
: Add or to your mana pool.
: Add to your mana pool. Put Timberline Marsh on top of your library.
: Return Timberline Marsh to its owner's hand.
.
: Add or 
to your mana pool.: Add 
to your mana pool. Put Timberline Marsh on top of your library.: Return Timberline Marsh to its owner's hand.
