Epsilon's Ruby Aegis

This spell was developed by the wizard Epsilon Vanstein during his formative years at Rautlec's Academy of war mages. Unable to initially master the Shield spell, Epsilon came up with this spell as a temporary workaround agains't his fellow peers Firebolts and Rays of Frost. 

You manifest a small barrier of magical force in your palms to protect yourself against harm. You must have 2 free hands in order to cast this spell. While concentrating on this spell, your AC increases by 2 against any ranged attack roll. 

At 5th level, and again at 11th and 17th level, the increase to AC increases by +1.