Wizard Eye

Danger can be everywhere. The Peer spell might be nice to get a get overlook of the surrounding terrian, but it doesn't warn the caster of enemies. However, if scouting is needed, Wizard Eye is best suited for the task. It creates a magical eye that will scout out the surroundings for the caster, reporting all kinds of danger. This eye is invisible to enemies and they do not know they are spied on.

After a set amount of time, the eye will dissolve into nothing, leaving no hint to the foes that they'd been spied on. In Ultima IX, the spell lasts until cast again or until mana runs out.