Wizards (1977)

Set on a post-apocalyptic Earth, this fantasy adventure follows the story of Avatar, the kindly, eccentric sorcerer-ruler of Montagar, a rainbow paradise inhabited by elves and fairies. Avatar's evil brother, Blackwolf, dominates Scortch, a bleak land of goblins and wraiths. When the power-hungry Blackwolf attacks Montagar, Avatar, accompanied only by a spirited young woman and a courageous elf, must enter the darkness of Scortch to save his world.