How to die:
Let yourself get hit and try not to heal yourself. Garunteed (Or however you spell it) to work everytime!

How to win the Phil Cup:
Try to have a very low health. Then try to hit the air for every single round. Make sure you have the Kingdom Key.

How to win the Pegasus Cup:
Same as above, except let Donald and Goofy do the work for you. Don't forget to kill them!

How to win the Hercules Cup:
Simple! Cast Stop on yourself and contine doing this always! You're bound to win!

How to win the Hades Cup:
Get hit. Instead of damaging you, it heals you, both MP AND HP!

How to defeat the Ice Titan:
Simple! Cast Blizzaga on him!

How to defeat Sephiroth:
You baby! Continue doing Strike Raid, making sure you miss every time!