Auto-translated
It just so happened that almost simultaneously with the Necromancer alternate upgrade, information about invisibility appeared (which caused a lot of controversy, unfortunately not on our forum). And on the forum where people play (as an example, Nival), they stopped discussing Necromancers and, within 24 hours, posted over a hundred posts about invisibility.
Honestly, I'm practically indifferent to how anyone looks.
By the way, I found the Necromancer alternate upgrade very interesting. We keep the old messengers and skeletons, and the rest can be mixed up quite a bit (that's my first impression). The Lich basically turns into a tough melee fighter; the stats for level 5 are simply great. The speed is low, but he's a caster.
Guys, maybe I'm stupid, but I don't understand what the alternate upgrade differs from the bone dragon, other than the color.
More damage, less HP, 1000 cheaper, instead of Curse on hit - Sorrow Strike