The thing I learned from a friend is when you fight him, pull him back to the door like AMV, you get way less adds. because the dragorns over by his circle just repop right after death, so if you fight him away from them they don't agro. I always bring my cleric or my shammy that can group cure. and when he teleports you to the other area hold still and /rewind after a few seconds and you'll pop back into the room. It isn't fool-proof like warping was and won't work if you move even a little so be careful not to move after the teleport or you get to run all the way back. there's a time limit on /rewind so try to make a button and put it on all your toons hotbars. or tie it to the same key in your options window under hotbar buttons, like R, so every time you hit R it hits your rewind button since you tied R to hotbar 1 button 10 or wherever you put the rewind button. With those two tips he should be np to duo/trio. I know this is probably way late, but maybe someone else will find it useful. This is how I'm still able to 1 group Beltron, with his banish..
