(: Add or to your mana pool.)
Grave Karoo enters the battlefield tapped.
, , Sacrifice Grave Karoo: Put a -1/-1 counter on target creature.
: Prevent the next 2 damage that would be dealt to target creature or player this turn.
: Add 
or 
to your mana pool.), , Sacrifice Grave Karoo: Put a -1/-1 counter on target creature.: Prevent the next 2 damage that would be dealt to target creature or player this turn.
