You do. As you crack open the ancient treasury, a small fanfare plays, starting quietly and then opening up into a triumphant series of simple notes, telling you that you have finally done it. The item you pull out of the centuries-old coffer is fine treasure indeed.
It's a shirt, adorned with some kind of legendary logo, a heart container tag, and the number "25" on the back. It's available in five sizes, for a special one-time only printing. Order now, before February 20, 2012, to get it sometime this May. You fold the shirt into your leather pack, and move on through the dungeon -- who knows what fearsome beast you might have to use this on, three different times, to defeat it?