In your study of basic abjuration, you have managed to shift your own aether just enough to change the way you are effected by certain defensive magics.

At level 1: Defensive magics cling to you, hardening into a shell around you, perhaps the aetherial echo of your ancestral heritage. when you or another creature cast Mage Armor on you, its duration is until you become unconscious for any reason (including sleep) and it grants you 17AC while active, you may also cast Mage armor on yourself once per day without expending a spell slot