Allright guys, this is my first post, tell me if i'm missing anything.
I was in UBRS just recently, and since I had a really terrible group, we wiped after killing Gyth, Rend's mount.
So this was fine, but when we came back, Gyth was still there, and the event reset itself due to the fix blizzard made. So we hopped on down, looted the dragon, got some T0 shoulders and was able to do the event again.
Except the second time fighting rend, he didn't hop off his mount after getting Gyth low, but we did get to loot Gyth again, and got another Gyth drop.
We went and killed ourselves to reset the instance again, but when we killed all the mobs before rend and Nef sent him down, he never came.
I'm not sure if that is just bad luck, but maybe its possible to keep fighting Rend over and over and farm items.
This post became a story, oh well, give it a shot if you want, tell me if your experiance is differance from mine.