[quote=@ActRaiserTheReturned]
Can they devour the very souls of their enemies?
[/quote]

Eh, not unless they've got a soul-oriented power. Like, Roxan is a demigoddess of death and can probably detect and capture souls. Thulemiz is a mighty lich and can harvest souls and Quay can summon them at will, but I don't think anyone can devour souls quite yet, though Roxan and those who can detect souls, like Quay and Thulemiz, may well be able to try.