Intelligent Tactician

You have a mind for battle, using your superior intellect to predict your opponent's moves before they make them,
and prepare yourself for attack, gaining the following benefits:

• You may use your Intelligence modifier in place of your Dexterity modifier when calculating your Armor Class, including while wearing armor but not when using alternate calculations to your Armor Class.
  Any maximum modifier bonus is still applied to the new ability modifier.
• When you are not surprised, before you roll initiative you may take a -5 penalty to the roll to gain a +2 bonus to your Armor Class, as well as to all attack rolls and saving throws you make, until the end of your first turn in combat.