Air Barrier

You can create an invisible shell of air that grants you a +4 armor bonus. At 7th level, and every four levels thereafter, this bonus increases by +2. At 13th level, this barrier causes incoming arrows, rays, and other ranged attacks requiring an attack roll against you to have a 50% miss chance. You can use this barrier for 1 hour per day per oracle level. This duration does not need to be consecutive, but it must be spent in 1-hour increments.