Board Thread:Off Topic/@comment-27082610-20170624011641/@comment-26397825-20170725015847

Aura is already pretty much a muscle; you practise with it and you grow more used to using it. Your abilities with it grow stronger the more you practise, and if you overuse it you are fatigued and have to wait for it to recover. And considering Jaune got beat up by Cardin despite having aura unlocked, it seems like the more you use it for defence the more damage it blocks automatically until eventually it only lets pain through.