(: Add or to your mana pool.)
Hollow Coliseum enters the battlefield tapped.
, , Sacrifice Hollow Coliseum: Put a -1/-1 counter on target creature.
, : Scry 2.
: Add 
or 
to your mana pool.), , Sacrifice Hollow Coliseum: Put a -1/-1 counter on target creature.
, : Scry 2.
