3rd level Transmutation
Classes: Magus, Sorcerer, Witch, Wizard
Components: V, S
Casting Time: Standard
Range: 60 ft
Target: One creature
Duration: 1 round/level
Saving Throw: CON negates
Spell Resistance: Yes
Description: Your spell slowly begins to eat away at the defenses of your target, causing it to lose 1 point from any natural armor bonus and weapon resistance (bludgeoning, slashing, or piercing) each round. Once the target makes a successful save the erosion stops, but any cumulative losses remain until the spell ends. At the end of the spell's duration, the target's weapon resistance and natural armor bonus immediately return to normal. Only one erode defenses spell can affect a particular target at any one time.