Don't play alone...
It's very hard to pull off . Unless their in a group spamming roots so your back stays turned or you just don't move in pvp very much .
^^^^ this guy... hahahahahahahahaha
well, you said you got fed by vampire and his companions killed you while you are stunned. it seems not that unfair. you are killed by 3 ppl. you must have been killed whether or not vampire feeding. oh! are you able to survive against 3 ppl? then, it seems that's unfair. and it's funny to see Sypher whinning about vampire feeding while he is playing OP dk. lol woo! surrounded by ton of ppl and still being able to tank them is much much op than vampire feed lol.
and only nightblade can feed somone in combat by using shadow cloak.
it's clearly limited by situation.