(: Add or to your mana pool.)
When Shelldock Caves enters the battlefield, sacrifice it unless you pay 1 life.
, , Sacrifice Shelldock Caves: Return target creature you control to its owner's hand.
, Sacrifice a Swamp: Add to your mana pool.
: Add 
or 
to your mana pool.), , Sacrifice Shelldock Caves: Return target creature you control to its owner's hand., Sacrifice a Swamp: Add to your mana pool.
