Armor

By means of this spell, the caster creates a magical field of force which serves as if it were leather armor (AC 8). If the spell is cast upon a person already armored, it has no effect. However, if it is cast upon a creature with an armor class normally better than 9 (due to its size, speed, skin, etc.) it will benefit the normal armor class by one step, i.e. AC 8 becomes 7, AC 7 becomes 6, and so on. The magic armor spell does not slow or hinder movement, adds no weight or encumbrance, nor does it prevent spell casting. It lasts until dispelled or until the wearer sustains cumulative damage totaling
greater than 8 points + 1 per level of the caster. Thus, the wearer
might take 8 points from an attack, then several turns later sustain an additional 1 point of damage. Unless the spell were cast by a magic user of 2nd level or higher, it would be dispelled at this time. Until it is dispelled, the armor spell allows the wearer full benefits of the armor class gained due to the dweomer.
Note: This spell will not function in conjunction with protective magic devices other than a ring of protection. The material component is a piece of finely cured leather which has been blessed by a cleric.