robus
Lowcountry Low Roller
In the interest of what I consider the most interesting story possibility to come out of this, the player must go deep into philosophy of good and evil, and just how far you have to go before the End no longer justifies the means. After spending a long, long, LONG time teaching the sword philosophy, and probably some basic Warfare etiquette, the player could probably get what they want. Of course, this is something that would take years in-game, and possibly just as long out of game, real Campaign-grade stuff. Not the sort of moral dilemma you throw into a one-shot for a couple of sessions.
Were I a more experienced DM and were the player more open to grappling with this item, I think this would be awesome to explore in such a manner.