Clone

The Clone spell creates a copy of a living being which will fight alongside the original, until it is slain. This copy possesses none of the intelligence of the original and basically is just a drone. The spell is not liked by many mages however, since there are disputes over if it is really virtuous to create life just to use as cannon fodder.

In combination with the Animate spell, the caster has a potent spell at hand, since they can animate an object, then clone it, then kill it to have two of the object!

Trivia

 * The spell can be abused in Ultima VI together with Animate to get lots of good equipment and make money.
 * Cloning the Avatar and then killing the clone reveals the otherwise inaccessible Avatar corpse.