Summoner cheats and cheat codes for Playstation 2

Secret movie:
Choose the "Credits" at the main menu, after push X when
the credits are appear.

Reduce AP cost of long chains
Reach a "Chain 4" or greater attack, after quickly tap  L2, R2 
or in reverse order (L2, R1) to switch to another character and 
then back to the original character. 
Your chain number should reset to 1 without slowing your attack. 

Quick spell
Cast a spell, push the Triangle button to display the pause menu, 
after choose the "Inventory" option. Go back and continue the game.
Your spell being cast without a delay.