Quote Originally Posted by Eldest View Post
Is the Artifact destroyed while being used as fuel?
No, that's the big appeal of an Artifurnace. A Furnace burns magic items but destroys them in the process; a spelljamming helm needs a caster to give up their spells for the day to power it; a lifejammer kills people; and so on. An Artifurnace provides a high-powered engine that just goes and goes forever.
And I was under the impression that any given god like, say, St. Cuthbert, only mattered within a sphere. So if you got his Cudgel and rabbited right then, as long as you never came back you'd be safe?
St. Cuthbert can't touch you directly in a sphere where he isn't worshiped, but you'd better be ready for all his followers and/or Outer Planes allies to hassle you. In many ways you'd be better off picking a non-God-related artifact, since most of them have fewer options beyond coming after you directly. Also, that still leaves the artifact's own influence; in 2e, putting St. Cuthbert's artifact in your ship would eventually turn you into a fanatic Lawful Good worshiper of St. Cuthbert who was determined to convert everyone you met.

And any more specifics on THE Spelljammer? Other than it's legendary? What kind of legends? Any detailed? Any cool features, other than it's possibly living and frickin' big?
It moves by itself, it's got a whole city on it, it comes and goes between spheres, it moves way way way faster than anything that size should, it's intentionally left vague in the setting books. It's basically the megadungeon of the setting, at least in 2nd edition; the Castle Greyhawk or Undermountain of Wildspace. Hundreds of people and groups have tried to take control of it; the remnants of their expeditions litter the surface and bowels of the ship.