Mystic Ravine enters the battlefield tapped unless you reveal a basic land card from your hand.
: Add
to your mana pool. Activate this ability only if you control an Island.
: Add
to your mana pool. Activate this ability only if you control a Mountain.

: Mystic Ravine becomes a 1/1 blue and red Shapeshifter creature with first strike until end of turn. It's still a land.