(: Add or to your mana pool.)
Mire River enters the battlefield tapped.
: Mire River becomes a 2/1 black and blue Wizard Specter creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Mire River becomes a 2/1 black and blue Wizard Specter creature until end of turn. It's still a land.
