I saw this on the PS2 version and it will work on 360 also. Note that it only gives you like 2 high potions or something like that. But, have you ever noticed the {RUNE SWORDS} inscription when you throw it?? I taped it once with a VCR {I now feel old somehow...} ,but the words (Vector) are inscribed on the blade which is almost impossible to see. So try this enter the name Vector in a new game and you will receive some potions, that is about it (I think) but just wanted to post it since I have never seen it posted anywhere. Atleast Ive never seen it in a FAQ!

I read once that the inscription is "Verboten" which is german for "Forbidden." I suppose I don't know for sure, and I've never actually looked at and read it myself. I'll have to do that.