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