Originally Posted by Mike Skubna on http://www.ffshrine.org/ffx
>>Battle- Yunalesca
HP: 1st form: 24,000; 2nd form: 48,000; 3rd form: 60,000
AP: 14,000
Steal: Stamina Tablet, Farplane Wind
Weak: Blizzard
Strong: Fire, Water
Absorb: Thunder
This battle may look hard but infact it isn't. This first form is fairly simple.Every time you attack her she will counter with something that renders that type of attack useless. Such as Tidus does a normal attack. Yunalesca attacks with blind or silence when you cast a spell. Equip armor and weapons that makes yourself immune to these attacks and your golden here.
When you reach the second form those special attacks stop but a new attack occurs. Its called Hellbiter. This attack causes your characters to turn to zombies. Use holy water to cure this. After you inflict alot of damage or shes about to die on the second form, make sure that you don't cure from zombie anymore. Once you beat this form the third one will attack with Mega-Death Attack. This will kill any character instantly if not in zombie form.
The last form can get tricky because you can't cure yourself anf if you release zombie your whole party has the benefit of certain death. Basicly the way i beat this form is that everyone has different levels of HP. This makes it so if an all party attack comes the ones with lower HP dies and i use Phoenix Down with an Alchemy type weapon or full life it make the HP as high as possible.Now the ones that were high are low and a life maintaining stat is perform.
Every now and then Yunalesca will attack again with Mega-Death attack so keepthose zombie stats going. It might also be good to use to save Overdrives to thispoint. Aeons would also be useful here but because with that instant death attack.