These are some potential ideas for my Hyperborean Demon's Hero Prop. These include a glacial dagger/sword, a dragons claw, a crystal ball and a soul stone. I would be very greatful for any feedback regarding any of these or other ideas that could be a Demon's Prop.
My favorite out of all four is the 'Soul Stone'. I know plenty of resources about this type of object and the fact that it is indeed holding a 'Soul' for a Demon could be seen as realistic.