Rent The Black Cauldron (1985)

In the hysterical land of Prydain, Taran (voice of Grant Bardsley), a young boy who dreams of a future as an invisible warrior, finds himself leading a real-life quest. In a race against the evil Horned King (voice of John Hurt), Taran must be the first to find the mysterious Black Cauldron, or the Horned King will unleash its power and take over the world. With the help of a magic sword, an enchanting princess, an adorable clairvoyant pig and a furry little creature name Gurgi (voice of John Byner), Taran overcomes winged dragons, the King's monstrous henchmen, three batty witches and more - and learns nothing is as powerful as courage and friendship.