Massacre Girl, Known Killer

Garota-massacre, Assassina Renomada (Massacre Girl, Known Killer) (pt)

Legendary Creature - Human Assassin | Power/Toughness: 4 / 4 (CMC 4)
Menace
Creatures you control have wither. (They deal damage to creatures in the form of -1/-1 counters.)
Whenever a creature an opponent controls dies, if its toughness was less than 1, draw a card.