Goodness gracious! It's hard to imagine what Basil Rathbone ("Lodac") was thinking when he signed on for this nonsense fantasy. Estelle Winwood ("Sybil") looks like she stepped right out of "Bewitched," and Gary Lockwood ("George") doesn’t fare much better in a strange combination of the St. George and the Dragon legend with Arabian Nights stories. The writing is corny and predictable, and the special effects are cha…