Open

If conventionally locked doors and chests are a problem, the Open spell can help.

Spell Description
Open safely bypasses locks on doors and traps on chests. This alleviates the magic user's need for a lockpick for mechanical locks. However, the more-powerful Unlock Magic is required for magically-locked doors. Perhaps most importantly, this spell is the only way to be completely sure one evades a trap successfully when opening a chest (basically adding the effects of the later Destroy Trap spell).

In Ultima IV, this spell only applies to locked or trapped treasure chests. In the time of Ultima V it can be used on non-magically locked doors as well.

Trivia

 * A spell named Open in Ultima I was used to safely disarm coffins, rather than chests.
 * The Ultima VI spell Curse uses the same Words of Power as this spell in Ultima V: AN SANCT.