In act2 there are flying monsters called "gore harrier" (or something similar to that)
it would fly down and attack me but I am unable to do any damage to the monster at all even my follower seems to ignore it as if its not existing but yet follows me around and does damage. it interups my tp and such
Edited by MxZeal#1928 on 5/15/2012 9:34 AM PDT