(: Add or to your mana pool.)
Tidal Crag enters the battlefield tapped unless you reveal a Blue card from your hand.
: Tidal Crag becomes a 2/1 blue and red Merfolk creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Tidal Crag becomes a 2/1 blue and red Merfolk creature until end of turn. It's still a land.
