Not to be a call you a list or anything like that, but he wasn't even cursed in that little .gif. Only corpsed and omened. That's more of an archer problem than a focused necro problem..
Archery hits entirely too hard/fast (best DPS in game) and has the best specials to top it off. Adding to this, the ability to hit at range, with double hit spells, and have a special to hit while moving/running.
Enhance all that with evil omen & corpse skin (focused), that is a recipe for disaster. Curse and stacking isn't even needed.
Edit: Typed this while you were answering also lol.