How to beat Sephiroth in Kingdom Hearts??

당신 are talking about Kingdom Hearts I and not II right?I will give 당신 both answers.First 당신 must have plenty of Elixirs 또는 Hi Potions with 당신 because the "Descend Heartless Angel" 옮기기 leaves 당신 with 1 HP and no magic!!!No magic means no Cure and no Cure means no 더 많이 HP.You can stop his spell before he casts it 의해 hitting him!In Kingdom Hearts II 당신 need the Aerial Dodge ability (you get that after leveling Master Form [Master Form levels up when 당신 get Drive Orbs]) to reach him.In Kingdom Hearts I 당신 must be lucky enough 또는 Sephiroth be fool enough to teleport behind 당신 before he cast the spell.If he casts the spell go away from him as far as 당신 can and give a Hi Potion to yourself.Better have it in the shortcut menu.Hope I helped ;)