Merfolk Keep enters the battlefield tapped unless you sacrifice a multicolored permanent.
, : Add , or to your mana pool.
: Merfolk Keep becomes a 2/1 blue and red Shapeshifter creature until end of turn. It's still a land.
, 
: Add 
, 
or to your mana pool.: Merfolk Keep becomes a 2/1 blue and red Shapeshifter creature until end of turn. It's still a land.
