Hssiss

Stealth, Bloodlust
Enrage (Whenever another Black Creature card on
the player's field is destroyed, place +1/+1 counters
equal to the destroyed card's defense value on this
card.)
When this card deals damage to a card, place two
-1/-1 counters on that card. At the beginning of
the opponent's turn, place a -1/-1 counter on
that card.