Autumn Willow and Baron Sengir (UNK RZ06b)

Legendary Creature — Avatar Vampire Noble • Mana cost: {4}{B}{G} • Unknown Event • Rare

Shroud (This creature can't be the target of spells or abilities.)
Flying
Whenever a creature an opponent controls dies, put a +2/+2 counter on each Vampire you control that dealt damage to that creature this turn.