(: Add or to your mana pool.)
Seafloor Oasis enters the battlefield tapped.
: Seafloor Oasis becomes a 2/1 blue and green Shapeshifter Cephalid creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Seafloor Oasis becomes a 2/1 blue and green Shapeshifter Cephalid creature until end of turn. It's still a land.
