An invisible, but tangible field of force surrounds an ally, providing a +4 armor bonus to AC for 5 minutes plus 1 minute per caster level.
Unlike mundane armor, Mage Armor entails no armor check penalty nor arcane spell failure chance.
- Mage Armor gives an armor bonus that will not stack with other armor bonuses, given for instance by regular armor (e.g. a Chainmail that gives a +5 armor bonus).
- For the same reason, a Sorcerer or Wizard should not take this spell, since he may easily acquire bracers giving the same armor bonus (e.g. Black Widow Bracers).
- Contrary to the expectations of PnP players, Mage Armor gives no additionnal defense against Wraiths or other incorporeal monsters over mundane armor, since touch attacks weren't implemented in DDO. As a result, incorporeal monsters do not bypass armor bonuses to armor class, so Mage Armor offers nothing other armors cannot offer.