Infinite Hunt Eggons Quest
When you are playing the mission, don't beat the 10 eggons, find 9 and then lose the next battle and GIVE UP. If you return by this method to spaceport, when you look for the quest again, it will be there forever.
Restore MP in Battle mode
Switch between Battle mode and Story mode repeatedly to restore your MP when you are anywhere in Theia in Story mode. Note: You cannot be in a dungeon on Marble Blue.