I was going to turn one of my lizardmen into a lich and ogre blade them into an enemy npc but it turns out they have to be human. So I figured the only way I could get around that for a specific character is to book of dead them into a phantom, then rebirth seal them back into a human. (Or rood them into a DK from a class where they could already wield it)

Before I go dungeon crawling, does that even work? I don't want to waste the time getting one only to find out they can't be book-of-the-deaded by the same stipulation

Edit: Left out an important part, I was trying to turn the lizard into a lich first, it's ring of the dead they need to be human for