Seriously, out of 12 class passives, necro has like...3 that are somewhat PvP viable, such as "Last Gasp" (+ max health), "Dismember" (+ mag. and phys. penetration) and "Undead Confederate" ( situational mag. and stam. regen). The rest is either highly situational and superniche (Death Gleaning, Disdiain Harm, Death Knell for example) or just straight up garbage and waste of skill point (Reusable Parts, Rapid Rot, Health Avarice, Curative Curse for example).
Compared to like.. DK and Sorc passived which are straight up braindead "+X to stat" increases as well as some potentially heavy sustain options, such as Combustion and Battle Roar for DK and Daedric Protection + Capactior for Sorc, Necromancer passives feel stupidly weak and useless.