Scintillating Scales

(Draconomicon, DnD 3.5)

Abjuration

Level: ; Sorcerer/Wizard 2
Components: V
Casting Time: 1 standard action
Range: Personal
Target: You
Duration: 1 round/level

Your hide glistens and shimmers with a protective magical aura, granting you a deflection bonus to your Armor Class equal to your Constitution modifier.
Your natural armor bonus decreases by an amount equal to your Constitution modifier x 1/2.