Patience of a Saint

It would take a thoroughly old sage to determine whether or not your composure is a gift from the gods.  You gain the following benefits:

• At the end of your turn in combat if you have not made a weapon attack, spell attack, or cast a spell that dealt damage, you gain +1 bonus to your AC, up to a maximum of +3.
• While you have this bonus to AC, any weapon attack, spell attack, or casting of a damaging spell add the bonus to its attack and damage rolls, if applicable.
• After adding this bonus to an attack or spell, it resets back to 0.
• The bonus is lost at the end of combat