A sword containing the mind of a legendary general, and very picky who may wield it.
A Leader of all the Drannor has emerged with the heart and fury of her nation. Finally, the Orc-nation of the Drannor will rise up and crush their centuries-long oppressors.
If you want to add a "supernatural" touch to your campaign, define the rules of magic and the universe. Make your players comfortable with those rules. Then your new supernatural creatures must then break those rules.