(: Add or to your mana pool.)
Fetid Shelter enters the battlefield tapped.
, Sacrifice a Swamp: Add to your mana pool.
, : Put a 1/1 blue Crab creature token with flying onto the battlefield.
: Add 
or 
to your mana pool.), Sacrifice a Swamp: Add to your mana pool.
, : Put a 1/1 blue Crab creature token with flying onto the battlefield.
