Ægis (from the Player's Guide to Wizards, Bards, and Sorcerers) Abjuration [Force]
Level:Sorcerer/Wizard 2 Components: V, S Casting Time: 1 standard action Range: Personal Target, Effect, or Area: You
Duration: 1 minute per caster level
Saving Throw: None Spell Resistance: No
This spell creates whirling field of force tendrils that protect your organs and other vital areas, granting a +2 deflection bonus to Armor Class. In addition, any time an attacker scores a critical threat against you, you gain a +5 deflection bonus to your Armor Class for the purpose of determining whether the attack was a critical or not. This secondary bonus increases by +1 for every 2 caster levels you have beyond the 10th.