Originally Posted by Sir Sweetleaf

I was on Origin last night for about an hour or two. The invasion started in Cove. Then somone shouted that Serpent's Hold was being attacked, so we all went there and battled the baddies. Of course the only two Vanguard Controllers were stuck in the ground and we were unable to kill them so only the other baddies respawned...maybe 5 times while I was there. Dark Guardians, Demons, Dark Wisps, Dark Wolves, Lost Souls, etc...
The one really odd thing I did notice while fighting a Vanguard Controller at Cove was that the blackrock spell did go off once and my character was thrown back 3 or 4 tiles. I am not sure if I took damage or not because of the mass confusion. Well of course I ran to arm myself with blackrock, but when I return and tried the spell myself it would not work. I am thinking that the Vanguard Controller cast the spell or it was effective on another monster in the area I did not see.