Tank the rogue. Pull him to the left side of the door as we tank the paladin on the right side of the room with the other two adds more central. This ensures that he always spawns around the area of the door. When he despawns I face the door and spam a /tar Veras /cast AS macro. It hits him before he starts to move and i've never seen him get blessed with anything prior to this. For this to work well however you need to max your hit with AS so it never misses or just deal with it if it does.
If he gets a BoSW shortly after you pick him up swap out to a warrior style weapon and use SoB. The "holy damage" from SoB is actually counted as physical and goes right through the spell immune BS. A decapitator also works beautifully for when he is streaking across the room immune and you are cursing at him hoping it does something.
I can honestly say I believe the paladin class has the most tools available for tanking the rogue. We have abilities (especially horde side) that allow us to rangle him in with either shield up if you use a few more unorthodox methods, namely tanking with a decapitator equipped for those "oh shit" moments when AS misses, taunt resists, and the bugger gets a spell warding.
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Lansky BE Paladin Mannoroth
http://www.wowarmory.com/character-sheet.xml?r=Mannoroth&n=Lansky
