(: Add or to your mana pool.)
Hollow Ruins enters the battlefield tapped.
, , Sacrifice Hollow Ruins: Put a -1/-1 counter on target creature.
, : Put a 1/1 blue Cephalid creature token with flying onto the battlefield.
: Add 
or 
to your mana pool.), , Sacrifice Hollow Ruins: Put a -1/-1 counter on target creature.
, : Put a 1/1 blue Cephalid creature token with flying onto the battlefield.
