Here you take a fire staff and no matter what you do, you have no damage. The Necromancer has the worst dps in pvp among all classes and loses almost twice. Even if you take control with a staff or two miserable hits of your own, you cannot kill the enemy. You just have to switch to melee and play through dot damage or be a bomber.
Give the necromancer normal gameplay, give the necromancer damage, give the necromancer control.