Bone Weapon

 A bone hurls out ouf your hand and becomes a weapon. The weapon can deal either bludgeoning, piercing, or slashing damage for 1d12 damage. If you are a shadow magic sorcerer, undying patron warlock, or a necromancer you can cast this on other people within 30 feet of you. 

This spell's damage increases by 1d8 when you reach 5th level (2d12), 11th level (3d12), and 17th level (4d12).