Mage Armor, Superior

Conjuration (Creation) [Force]
Level: Wiz 10
Components: V, S
Casting Time: 1 standard action
Range: Touch
Target: Creature touched
Duration: 24 hours (D)
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)

An invisible but tangible field of force surrounds the touched creature, granting a +12 armor bonus to Armor Class. This bonus does not stack with other armor bonuses, such as those from worn armor or shields, but it can stack with enhancement bonuses to armor or other bonus types (e.g., deflection or natural armor). Unlike mundane armor, greater mage armor imposes no armor check penalty, arcane spell failure chance, or speed reduction. Because it is composed of force, incorporeal creatures cannot bypass it as they can with normal armor.

Note: Because 3.5 Epic spell system is very wonky, and overpriced, it was rewritten for 10th spell level. 3.5 Version can be found here.

Polymorph