@Gank_Killer before they made the changes so that you cant see things after level 80 his potency got up to 130% so I'm pretty sure that is still the case even though we cant see it.. and if I remember correctly he got up to the 90% range in gear X so once we can see his final couple gear X pieces we should see tarkin in the 90% potency range before he hits gear XI. As a side not I totally agree that Magma needs alot of purples to get to gear X.... I'm 50 cuffs away but ouch it hurts so I'm hoping the potency buff at gear X makes it worth the pain...