Wyverns have high HP and Defense, so they may take more than a few hits to kill. When left alone, they can cast Cyclonic, which takes away 15/16 of everyone in the party's HP. They are weak to Ice, so Celes should cast Blizzard against them. Locke can stealDragoon Boots from them, which can be sold for high profit.
[view·edit·purge]A wyvern is a medieval European mythological winged creature with a dragon's head, reptilian body, two legs (sometimes none), and a barbed tail. They appear in many crests of Europe's ancient families, symbolizing strength. The word wyvern comes from wivere, which means serpent. They are based on Pterosaurs, flying reptiles which lived during the time of the dinosaurs.