I really think it won't work. If i remember right, the devotion with higher armor rate will work while other won't (even you change the buff) And if you use e negative armor aura based on devotion (like in dota) For ex: You have a +5 armor providing aura and you are affected by a -6 armor aura. In this case the aura with greater absolute value will work. (Same goes with both positive or negative devotion) Needs to be tested, but i remember as it works this way.