Trap Soul

After killing a creature within range, by any means, You may choose to cast this spell and take their very soul from their body. The creature must make a Wisdom saving throw or have their soul thrown into a non-magical weapon of the casters choice. Until "Dispel Magic" or something adjacent is cast on this weapon, the creatures soul is unable to leave the weapon by any means. It also becomes a magic weapon, with it's effects chosen by the creatures soul itself.