I am not sure, but I believe that in the 1.6.4 manual is for the Adheren'ts and Archmage's Staffs additional bonus of +10%, +20% to damage from archmages (but when we consider that archmages do lighting damage, it's the same... :) )

Right. Then its a version issue. I also run version 1.6b7.

Suporex, could you check which version you are running? May be interesting to find out if there's other differences as well.

I have got 1.6b7... Soon I am going to play 2nd time and I will see if it's going to be same

i got a necromancer skull from non enemy zombie at swamp

gives +5 atk + 5 int after upgrade by charging

did anybody has one ? i bet its random

Do you mean the Pain skull? First it gives +2 attack +50% rage in combat but takes 1/2 mana at start of combat. It's not random. The zombie gave it to me(After I poured holy water over it's half-eaten brains.) after correctly doing the witch/alchemist quest. Otherwise you can't talk to him at all. Got it both my current and my previous game. There's a few more of these items like Isshara's whip gained from a quest in demonis, or the Miner Helmet in... the small dwarven land with the broken thunder can(Obviously can't remember it's name =).

I believe it is random because I got it in Ardea's Peak in the necromancers inventory. Let's face it - 99.99% of all things tied to items and spells are random

It is somewhat random or maybe class-based. As a mage when I killed him I got an awesome (I forget the name) demon red thingy that gives me something like +20% damage from fire-based spells. Upgradeable but the demons inside kick my butt right now...

Alot of stuff is not random at all. Certain dwellings will ALWAYS sell certain troops. Certain places will ALWAYS sell certain items. The only thing that seems completely 100% random are which spells show up in shops. But you have to understand, even the random stuff is less random than it seems. Pretty much with everything in the game stuff is picked from a pre-specified pool. From the above messages I can only conclude that the zombie has a few items it is able to give. One being the skull. The dwarf in mehgard will ALWAYS sell miners lantern, and after a certain quest other stuff that will ALWAYS be the same. I believe the pictures available at the picture artist on griffins island also always has the same pictures. +1 attack one, -3 enemy attack one, and after finishing a quest, +20 mana one. Or the demoness whip, or Anga's ruby.. I can keep going for awhile.