Final Fantasy 16 carries on many trends from previous games despite all the new ideas introduced. One of these continued trends is the gaining and use of AP or Ability Points. Ability points are used in your skill tree to unlock and further level up different skills for Clive to use in battle.
Final Fantasy 16: Complete Skill Tree Guide
Clive's playstyle comes with a growing skill tree that opens up with each new Eikon; here's how to use the skill tree's tools in Final Fantasy XVI.