[UPDATE WEAPON FUSION RECIPE FOR BLACK IRON BOW] : First get (Farmland Scythe + Red Mercy = Woodland Bow) and then (Woodland Bow + Neferti's Harbinger = Emerald Bow ) to (Emerald Bow + Brutal Halberd = Black Iron Bow ) and Lastly (Black Iron Bow + Vortex Orb = Crescendum Bow )