I have recently revisited necromancer undead slave list and
I've noticed that some undeads are far too weak for their level requirements/mana cost.

We have tier 1 undeads that we can create from level 6 that cost 1 Mana point and i am fine with that.
The problem is when we go further on list:

Mid Tier undeads

Shadow:
- strength draining is usless when attacking other monsters (I suggest to replace it with Shadow Lord so It can at least survive longer)

Corpse Fiend:
- sickness is usless when attacking other monsters (IMHO it should at least slow them a little and reduce slightly HP)
- despite description it will not eat corpses (I suggest to add special command that will make it eat corpse from the floor so that way it could regain some lost hit points)

Mummy:
- sickness attack doesnt work on other monsters so I suggest to replace it with Greater Mummy so It can at least survive longer. (if sickness is impossible to implement on monsters)

Skeletal warrior:
- is ok but blessed bones should give it more hp than regular bones

High Tier undeads:

Ghost:
- aging attack is usless here (I suggest to replace it with Ghost Lord so It can at least survive longer)

Spectre:
- cold resistance and ability to pass through walls will surely make it worthier high tier undead (AFAIK its already implemented - http://www.adom.de/forums/project.php?issueid=5648)

Shadow Lord:
- Its really too weak
- almost no PV low HP
- usless special abilities
- costs 5 Mana and its available on lvl 45

- I think it shoud be replaced with Revenant and Shadow Lord should be on place of where Regular Shadow is.

Let me know what You guys think.