By casting this spell, the priest can transform a normal chair or seat into a minor spelljammer helm suitable for powering a ship through space. This spell does not replace the need for a permanent magical helm onboard, and is used primarily as a back-up system or in emergency situations. Casting this spell ages the caster one year.
The minor helm can power a ship of no more than twice the caster's level in tonnage; a 20th level priest can therefore create a helm capable of powering a 40-ton ship. In operation, a minor helm created in such a fashion is identical to a regular, permanent spelljammer helm, with one exception. If a helm created by this spell is successfully dispelled, it disappears and must be created anew. The spell requires a chair, stool, or other seat suitable for use as a helm.
Notes: Uncommon for priests from a spelljamming culture; otherwise, very rare.