Im affraid to tell the tree hugger that posted about the not so usefullness of this effect.Necros only have 1 good DD at higher level and that is <Neurotoxin>.So when u are in group or raid killing a mob and want fast dps for fast kill your not gonna stand there and stack DoTs.Cause by time u get DoTs off mob is about dead wich means u just wasted roughly 1k in Mana.
But what the smart necro would do to get a couple decent nukes in he would use <Neurotoxin>.Cause it are only good Nuke that and our Taps.So if Neurotoxin takes 500mana to cast but u have this effect u just saved 125mana casting this DD.So for u treehugger,if u think saving 125mana per cast for this spell is a waste,then umm i think your an idiot....