Background please? Low Magic, No Magic? What constitutes an "Artifact" exactly?
Pandora's Cock - A Cursed Strap-On Dildo. Anyone you use it on becomes evil for a week. Embodying a specific negative energy. Hope is the only cure. So find a girl named Hope, and pray.
Lockstep bracelet: You put it on someone and they become perfectly synced to your steps. You can combo attacks, choreograph acts, or march an enemy off a cliff.