This is a great magic item for parties who are heavy into role playing and come up with creative uses for magic items. I loved this one and look forward to more creative products from the author.
I enjoyed this and was able to easily place it in my campaign. It's a lot more interesting than a Cursed Sword -1 and a Remove Curse cure-all. You could even add it as flavor to something like the 5e Berserker Axe.