Good Design: Nine Lives Stealer

Something to translate into MMORPGS.

The Waterdeep: The Dungeon of the Mad Mage board game is full of bad design ideas, perhaps that's what made this one item stand out for me. The Nine Lives Stealer is a powerful magic sword that you earn by beating the death knight who wields it (and boy does he wield it well). As a player item, it does above average and consistent damage on a hit, and on a roll of 20 on a 20 sided die it instantly kills whatever you hit, including bosses! Should that ever happen, the sword is then lost.

That would make a fantastic weapon in MMORPGs, which should translate to doing damage equal or a little better than the top tier weapon at every release. It is something people would want to grind for and want to have a supply of. Something pay to win people would buy from the auction house and/or the cash shop. Something that would always be in demand. Obviously you won't want to use it as your "main" weapon because I know a lot of people don't want to suddenly be fighting barehanded (obviously monks / martial arts don't exist or aren't effective in that world), and you definitely don't want to risk losing it against a minor add.

But as something that could potentially cut down the time in a dungeon and/or instakill bosses? Or even that annoying guy in PvP matches? Hell yes. Take that Tiamat! In your face Zariel! This is one reward I'd definitely like to see implemented.