At the beginning of your end step, if you didn't cast any spells this turn, Blackcleave Vents deals 1 damage to you.
: Add to your mana pool. Return Blackcleave Vents to its owner's hand.
Cycling (, Discard this card: Draw a card.)
: Add 
to your mana pool. Return Blackcleave Vents to its owner's hand.
(, Discard this card: Draw a card.)
