This is the Barrage mod for MCPE, also known as Easy Aim. If you have trouble aiming with your bow or you turn around and a creeper is walking towards you, then this is the mod for you! Simpy tap a bow on the ground and instantly shooy FOUR arrows straight ahead, each a little bit spread apart and with different velocities. But do be aware, this does consume arrows(just 1) and FOUR durability off your bow. If you use it a lot and get your bow to breaking point, it won't actually be broken but next time you shoot an arrow it will break like normal.
Download link -> http://adf.ly/uihlx