(: Add or to your mana pool.)
Obsidian Sandbar enters the battlefield tapped unless you pay .
, Sacrifice a Swamp: Add to your mana pool.
, : Put a 1/1 blue Shapeshifter 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 Shapeshifter creature token with flying onto the battlefield.
