Pickpocket

Pickpocket is an amoral spell doing exactly what it says.

Spell Description
No virtuous mage would ever use this spell, as its very use constitutes nothing less than thievery. A favourite of shady elements, the Pickpocket sppell allows the caster to remove one of the target's possessions silently, leaving the victim unaware of its disappearance. The law-abiding mages of Britannia have tried everything to keep the knowledge of this spell under wraps. However, the Guild of Thieves has learned of it nonetheless.

Trivia

 * This spell can actually break Ultima VI, as it is possible to get otherwise inaccessible objects.
 * It is very similar to Vibrate from Ultima VII Part Two, with the same game-breaking results.