(: Add or to your mana pool.)
Whenever Skeletal Vents becomes tapped, it deals 1 damage to you.
, , Sacrifice Skeletal Vents: Put a -1/-1 counter on target creature.
, : Put a 1/1 blue Shapeshifter creature token with flying onto the battlefield.
: Add 
or 
to your mana pool.), , Sacrifice Skeletal Vents: Put a -1/-1 counter on target creature.
, : Put a 1/1 blue Shapeshifter creature token with flying onto the battlefield.
