"If you take out all the bullshit about the machines and the crappy prophecy, The Matrix was pretty close to the truth. Just think about it for awhile and you'll see how much sense it makes. And really, if you were trapped in a game and couldn't wake up, wouldn't you want to know the truth? So you could do something about it?"
" . . . Still haven't convinced you, huh? Here, tell you what: I'll give you my card. Whenever you feel like learning the real truth of this world, give me a call. I'll show you the ropes."
The creation of intelligent magical weapons is not an exact science and there are occasional failures, as such think of causing a little more stress to your players by "rewarding" them with an insane magical weapon
Agrophobic, refuses to come out of the scabbard without a strength check to draw it.
Haemaphobic: afraid of blood, fight at a penalty against any blooded creatures but really good against undead, elementals etc
Schizophrenic, not just one mind in your sword, lets have half a dozen minds in there, all different and bound to cause confusion
the possibilities are endless