X-Ray

X-Ray is a scouting spell.

Spell Description
With walls or mountains blocking the line of view, the spell X-Ray enables the caster to simply look through them, as if they are made of glass, for a short time. This is very useful for finding secret doors and passages. The white potions originally had the same effect. Both, the spell and the potion, were outlawed after an infamous peeping-tom scandal at 207 A.E., causing them to fall into obscurity.

Trivia

 * The true reason why this spell vanished by Ultima VII, is, that the game engine acted as permanently using X-Ray, making the spell and potion useless.