The WhichWay Bow is a magical object in Sofia the First. It is created from a Protector's Enchantlet, which can magically show the user the way they want to go. All strings of a WhichWay Bow are made from the hair of the Mare of the Mist.
History
In "The Mystic Isles: The Mare of the Mist", Sofia begins her next phase of training. Chrysta tells her that it is getting the WhichWay Bow, and that she needs to get the bowstring for hers from the Mare of the Mist on the Isle of Unicorns on the Mystic Isles. When she gets there, the Mare of the Mist refuses to give her one of her hairs, due to Sofia hurting Minimus' feelings after choosing Skye to get there. After Sofia and Skye save Minimus, the Mare gives Sofia one of her hairs to use for the bow. Sofia apologizes to Minimus and states that he would be her protector steed in the Ever Realm and Skye would be her protector steed in the Mystic Isles.
Sofia uses the bow again in Sofia the First: Forever Royal after she sneaks into her castle so she can find out where her family is, free them, and help them take back Enchancia from Vor.