Autumn Willow and Baron Sengir RZ06b/477 (Un-Known Event Playtest Cards)

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.

NM - $90.70
LP - $72.50
MP - $54.40
HP - $36.30
DMG - $18.20