Battle Aura

You cross your arms and then throw them at your sides as a protective magical force surrounds you for 15 rounds. You gain a +3 bonus to AC & a +1 bonus to attack and damage rolls with weapons (+1 bonus can be transferred to either attack roll or the damage rolls. this means that a +2 bonus will be applied to whichever you choose). The spell ends if you either dismiss the spell as an action or the spell ends. 

At level 15, on top of the +3 AC & +1 to attack/damage rolls, you gain 5 temporary hit points (this is added to any current temporary hit points that you have) & an additional 10 feet of movement when you cast the spell.