[quote=@Cyclone]
I assume that since the 3,000 dragons obey Ialu he too can control the dead, or at least those particular ones.
[/quote]

I'd say that the power of a Great Lich Lord over the dead trumps that of one who does not even know that Necromancy exists as of yet. I assumed that it was Mirtagn who was controlling them for the moment, and overwhelming his control over them will be rather easy for six necromancers and a half human half demigod level 30 Hero who is a walking nuke of 13 Might xPP