thanks for the answer, would have been better if it worked on ALL heal type spells, [ ghoul,vampire, sprite,pixie,etc.] i don't see to many death school bad guys using sprites and pixies. they like the ghoul and vampire.
Well it DOES work on one of the death spells. It works on sacrifice! I just tried it out in PvP last night by casting it on a death wizard. I was disappointed to find that it did not work on any of the steal health spells but later on that wizard use sacrifice and sure enough that de-buff fired.