Shielding Strike (Combat)

When you imbue your weapon with arcane energy, you can expend abjuring power to increase your defenses.

Prerequisite(s): Arcane Strike, Spell Focus (abjuration), 1st-level eldritch knight

Benefit: When you use Arcane Strike, you can expend an unused abjuration spell that you have prepared or a spell slot of a level in which you know at least one abjuration spell (for spontaneous casters). If you do, your Armor Class and Combat Maneuver Defense increase by 1 for each level of the abjuration spell expended until your arcane strike ability ends on your next turn.