Lady Melisande did I know for a fact.
I was only going with regular necro casting MoBs on OSI not peerless.I do not remember liches or lich lords (even the para versions) casting these on OSI.
On Demise the animated versions of skeletal dragons and lich lords etc do.So if they do then the non animated will also.I don't think it's right but it is fair.I mean if an animated summons can cast these why can't the regular version?It needs to be looked
Lich and lich lords I think I remember them being able to summon skeletons but nothing stronger than that
I was killing Shadow Wyrms and animating their corpse
I had 3 animated skeletal dragons
Each one would cast a revenant (along with other necro spells)
So my 3 animated summons were casting summons(revenants) I think there's something wrong there
How overpowering is that?
Anyway what I'm trying to say is you are right they should not cast them even if they have high enough skill to do so.
I'll leave this thread and let you do what it is you need to do to get this fixed/looked at/acknowledged whatever.