Here you can see two level 15 robes. One is legendary and the other is epic. They are the same except for one having arcane aura and the other having arcane shell. Arcane aura is just better than arcane shell. Same card but twice as much damage added. http://i.imgur.com/KMB1DTc.jpg So whats the problem? The legendary version has the worse card. Seems like it should be superior to the epic card! Or maybe I am missing something? Interested to hear.
Arcane Aura does add 2 damage versus Arcane Shell's 1 but since the first one doesn't have Keep, you'll often lose it before getting any actual use from it. For this reason Arcane Shell is actually the better card and thus Prillith's Robes Of Pain is better than Bloodfoot Robes
