Editing Spelljammer Helm (section)

=Furnaces & Artifurnaces=
Furnaces are an archaic form of helm that consumes magical energy taken from magical items instead of channeled by living helmsman. This "burns up" the item in question, similarly to feeding coal into a steam engine. Generally, a furnace functions for 1 week at Ship Rating 2 per 1,000 EXP the item fed to it is worth; feeding two items at once makes it function at SR 3, but has a 25% chance of making the Furnace explode in a 30ft 10d10 fireball.

Furnaces, obviously, cannot be operated in the [[Phlogiston]]; the eldritch fires that they produce as a side-effect of burning through magical items means that exposure to the Phlogiston causes them to explode.

Artifurnaces are a unique variant of Furnace constructed around a single Artifact-tier magical item. As artifacts are effectively indestructible, artifurnaces provide infinite energy. An artifurnace resembles a pot-bellied cast-iron stove with an iron mesh door and a gnomish handle near the stove pipe, which is clamped and hammered shut. To create an artifurnace, a cast-iron stove must be enchanted to capture the life essence of an intelligent being. The stove must then be lit with green hickory seedlings and the selected artifact placed within. The essence would then draw forth the required motive force to propel the spelljammer, providing the ship with almost unlimited power.

Once installed on a suitable ship, an artifurnace provides an SR of 5 whenever it is activated, and will run indefinitely, powered by the artifact placed within. The artifurnace is activated by lifting the gnomish handle located the stove pipe, and is deactivated by pushing down the same lever. The operator, usually the navigator, can also invoke any one of the powers possessed by the artifact located within the artifurnace.

Whenever the artifurnace is activated, it becomes so hot it deals 12d6 points of damage to anyone who touches any part other than the handle. It also has the side-effect of attracting the attention of any powerful being associated with the artifact used to power the artifurnace. Finally, the artifurnace shares any and all curses that are associated with the artifact used to power it.