Jack's Scythe, one of the two scythes who can become the Ultimate weapon.
Jack was the only mortal to confront the devil and lived to tell the tale. The devil wanted to take him to hell. He lured the devil in a tree and carved a cross on the tree. The devil and jack made an agreement that the devil would not take him to hell as his he wanted to. Years pass and jack died, but he couldnt go to heaven because of his deeds but neither could he go to hell, his soul stuck in the realm of the living.
Jack crafted a weapon, a scythe to be precise, with his knowledge of the scythe of Death himself. Making this scythe took him a long time, and it wasn't a waste of time. He made one of the two ingridients to the ultimate weapon. Jack's Scythe always reaches it full power on the dark nights of Halloween. On halloween, if Death's Scythe and Jack's Scythe clash, they will become the ultimate weapon known as the "Eternal Scythe", the one with this scythe is mightier over life then Death himself is, he can decide who lives and who does not. (Yes I may make the Eternal Scythe later)
Where jack's soul rests now in the living realm is unknown, but there has been sights of a soul with this scythe near pumpkin patches.