Crown of the Void (Magic Crown)

This plain metal circlet functions continuously and automatically, and need not be worn or displayed openly. It magically creates a continually regenerating, breathable atmosphere about itself, identical to the air about the maker at the time the crown was enchanted.
The extent of the atmosphere created by a crown of the void varies from a 10' radius to a 90' radial area centered on the crown. In space, this item can be used to keep a drifting individual alive indefinitely, or to continually renew the atmosphere of a ship. The air created by the crown drives out fouled or poisonous gases in its area of effect in 12 rounds. Note that ships using such crowns can be much smaller or far more crowded than ships retaining atmosphere by normal gravitational means.
The size of a crown's air envelope is mentally controlled by the being wearing the crown, who must be sane, conscious, and not engaged in spellcasting to change it. The air envelope cannot be turned off or extended beyond a 90' radius, and when being willfully changed, changes in area by a 10' radius per round. The atmosphere of a crown of the void cannot be “stolen” by a larger body in space, but is magically maintained about the crown. If the crown is destroyed, the atmosphere is destroyed instantly. If an operating crown of the void is placed in an operating furnace and used to power a ship, it ceases to function instantly. A crown of the void should not be confused with a crown of the stars.
These items are very difficult to make. The few wizards who know how to make such crowns usually lack some very rare ingredients necessary for the crafting. 
Category:Encyclopedia Magica Magic Items
Category:Magic Items
Category:Magic Crowns