Moonring Hollow enters the battlefield tapped.
, : Add to your mana pool.
: Moonring Hollow becomes a 2/1 blue and black Cephalid creature until end of turn. It's still a land.
, 
: Add 
to your mana pool., : Add to your mana pool.: Moonring Hollow becomes a 2/1 blue and black Cephalid creature until end of turn. It's still a land.
