Currently making a 5E Warlock for an upcoming session, and I'm wondering how this particular interaction works:
I, as a Warlock, start with leather armor. I'm considering having Armor of Shadows as one of my two Invocations, for at-will self-Mage Armor (DM is starting us off at 3rd level). However, the description of Mage Armor stipulates that "You touch a willing creature who isn’t wearing armor, and a protective magical force surrounds it until the spell ends.", and also that the spell ends if the target dons armor or the spell is dismissed.
So I'm wondering: If I wear leather armor (since I get it starting as a Warlock), can I still use the at-will Mage Armor to have a 13+Dex modifier AC instead of leather armor's 11+Dex modifier AC?