wow, very awesome class
i agree that its pretty much set as it is.
i dont know how common instant death effects are, but if they're this guys "weakness" (as much as he HAS a weakness) then what about having an earlier level so they always/more likely to succeed, but instant death effects always do nonlethal damage.
because otherwise it would seem that that could bypass the entire point of the class, and i dont know what would happen if an ally was targeted by a dath attack and your aura redirected it?
whether you'd both die, or each take 50% damage or what?
i only say because the literal minimum level to gain the capstone is level 15, and it would kinda suck if you find your nigh unkillable badass getting one shotted repeatedly
also would add fluff-ness, in that he's just to macho to listen to any of this "instant death" rubbish