Here we go again)
And purely racial artifacts are a death sentence for multiplayer.
Also, I don't like artifacts like the Necromancer's Amulet.
1) It doesn't fit as a relic after Necromancy was moved to the Tier 3 spell list;
2) It's too specific.
Solution:
Add the +4 Knowledge effect.
And the Lion's Necklace, and other artifacts that increase leadership, are completely useless for a Necromancer. So it's all fair. Whatever you get, you get.