Hehe, she really messed u up didnt she? I beat her no problem 7 times... and then i had to reinstall(yes i have ff8 on the COMP) so i had to start the game again but everytime i start a new file i get better and better...(pfff DUH). I never use holywar against ultimecia... i just used Laguna card and formed it into 100 heroes and used those not holy wars... they are just too valuable and u need holy war for Omega Weapon... How many did u have ultima on ur magic? i could only get like around 70s cuz u can only draw them from like catelopas and like ultima weapon... and that 70 i needed for Rinoa since she casts magic... and do u need to no where to get pulse ammos? or are u just a lil too lazy to get some? i have full 100 of those... and i only use about 5(yes that means only one limit break for irvine) for the entire battle. The last form for ultimecia is the most simplest cuz u could figure out so much stradegy since u are giving her wit EVERYTHING youve got to kill her... I first wait for her to use Hell's Judgement then use hero on everyone... then you'll have enough time to kill her with limit breaks... ive never failed this. This is a guarentee working stradegy... unless u really suck at FF games.
(ONE REALLY HUGE SUGGESTION for all of her forms except the last... GET AURAS 100 PER CHARAC!)