You retrieve the TECTRIX OF THE ARBITOR you were granted as a boon from the Weasel King a while ago to duel with Death. You had since stowed it in your HAT for safekeeping. That bit of cunning foresight was certainly a feather in your cap, figuratively speaking of course.
Hey check it out. Every week we'll be revealing some new troll characters from Hiveswap until Act 2 is out. Follow the Troll Call here, and meet the first two here. Expect a few more surprises like this to drop in coming weeks.