Duke Mordragar's cape
You've kept the cape of this luckless Hellion as a reminder of the adventure you like to call:
You knew Senestrus was coming, but you didn't know where. You took to the streets and defeated Circle minions until one gave up some information: a ceremony was being conducted to encure Senestrus' safety. You stopped the ceremony and learned several facts about the dread mage, including the location where he was arriving.
Once again, you journeyed into Oranbega. Armed with the soul trap, you faced Senestrus and ground him beneath your heel. Senestrus' soul now resides with Mage Killer Zuhkara. Who knows what ghastly fates she will visit upon it?