snackbacon: Hey all. I have a quick question on how a relic works. I found the relic "Justice" (Undead slaying, of Mind magic, of Body magic, -40 speed, Good). However, my Cleric cannot equip the weapon and I'm not sure why. Is it because the -40 speed would put me below 0? Or the "good" part (I'm not entirely sure what that even means)? Any help would be greatly appreciated!
The problem is almost certainly because you haven't chosen the Good alignment. Either you chose Evil (the interface will have changed color to be all black and red), or you haven't chosen yet (more likely, and the interface will be the neutral colors it was at the start of the game). If you don't know what choosing Good/Evil means yet, then you haven't chosen.
Stats can go below 0 without any issue that I've seen (I had a Knight once who was using an artifact that sapped his Intellect and/or Personality).
[Edit to add] For the sake of completeness, I'll mention the only other possibility (besides not choosing Good) that I can think of that would block a Cleric from using Justice: your Cleric has learned the Mace skill, correct?
[Edit 2] Clerics start with Mace, so never mind that last question. When you're offered the choice, side with Good and your Cleric should then be able to use Justice.