AP- Action Points affect the amount of actions a fighter can take. Every
character has six which are restored after every turn, the amount a fighter has
when its there turn determines what actions they can take. AP can be reduced or
increased in a battle through various spells or cards.

MP- Movement Points determine how many cells a fighter can move, all fighters
start with three MP but they can be reduced or increased in battle through
various spells and cards.
Initiative- Determines the order your fighters go in, Initiative can be
modified out of combat but is unchangeable in a battle.