This allows for you to have multiple MP and TP bars for actors. Right now it can exceed 3 right now.
What are Mist Charges?
From the FF Wiki page on MP
“The MP base value goes up as the character levels up, but upon learning new Quickenings the MP pool is first doubled, then tripled, of the base value, giving a character three MP “bars” after having learned all three of their Quickenings. The characters have a permanent Manafont ability in which they continually gain MP as they walk on the field, and in places thick in mist, the MP recovery rate is boosted. Using Quickenings and Espers expends MP bars rather than individual points.
In the International Zodiac Job System version, Quickenings and Espers no longer drain the user’s MP, but have their own bar instead.”
$game_actors[id].extra_charge(type) Gives the actor a Mist Charge
$game_actors[id].lose_charge(type) Takes a Mist Charge from the actor
Script Download and Requirements
Required: Crystal Engine – Basic Module