(: Add or to your mana pool.)
Blackcleave Vents enters the battlefield tapped unless you control an enchantment.
, , Sacrifice Blackcleave Vents: Put a -1/-1 counter on target creature.
, : Scry 1.
: Add 
or 
to your mana pool.), , Sacrifice Blackcleave Vents: Put a -1/-1 counter on target creature., : Scry 1.
