This hack allows for restricting espers by character to add individuality (or remove customization, depending on your point of view) to the game beyond unique battle commands. There is no limit to how many characters can equip any certain esper.

It is best used in conjuction with a rather thorough overhauling of esper spell lists and level bonuses.

Version 2.0 update - dramatically reduced the space needed by moving from jump tables to bitmasks.