you suck how? in pvp or just pvm or both?

you need to learn to use the strengths your spells. I run a similar necro/mage except I do not have spellweaving, I have inscription instead. I rarely die ( I am not talking about this current event, have not taken him to the event yet)

let your spells fight for you, for example precast energy vortex, run up cast one, then immidately cast invisible then the creature/s you attack focus on the ev (if you fizzle) so what you are hidden, run back precast run up hide again. once you have whatever fighting your ev or evs then start hitting it with spells, many people go for the flashy flamestrike, yes it looks nice, me? I hit with a corpse skin, the a strangle, then fireballs til it falls over, should not take this many spells since I have an ev or 2 on it, but you get the idea.

then use you other strength, whatever you just killed, animate dead, I do not care if it just raises a skeleton, you can have 3 animates, plus 2 evs out (I ride an ethereal mount for the quick get away) your own personal army, hell, if the creature is high enough fame, you raise liches and they will attack on there own.

spirit speak is your friend too, once you start to pile up the bodies, stay near fresh kills and heal up. move slowly, we necros are not here to stand toe to toe with our foes. We exist for the dark arts, let nothing stand in your way! Let others call me coward, when I see their spirits flying around me, begging me to bind their souls once more to the material plane, I laugh (Muahahahhahahahahahahah) in their faces and spit on their corpses, using their strength to recover my own.

Seriously though I would be more than happy to assist you journey in the dark arts. Since we are on the same shard. It might be after the event though, trying to harvest enough souls to placate the dark gods.