I'm an ogre shadowknight, and when I use Guise of the Deceiver I can no longer use slam. I thought that I would also lose my stun immunity, but somehow that still works. Is this intended or a bug?
Intended. It's always been that way. It works the other way too. If you're a smaller race and illusion to Ogre, Troll or Barbarian you gain the ability to slam while in that form.