I'll fill in the curse. A favorite one of mine from a long time ago.
Cursed weapon -1, always readied. That is, no matter what you are attempting to strike with, this weapon will always appear in your hand just before the blow is dealt. That's right - no matter what you do, this weapon is ALWAYS going to find its way into your hand and be the weapon that deals damage. It teleports without error from across any distance, including plane-hopping. And the curse is not removable without divine intervention. (Man, that was one hell of an adventure to get that freaking long sword removed from my person.)