Unarmored Defense

This variant class feature can be taken by any class with proficiency with light and medium armor. This class feature replaces all of the class's armor proficiencies, except for shield proficiency.

Choose one of the following options:

Constitution-based

While you are not wearing any armor, your Armor Class equals 10 + your Dexterity modifier + your Constitution modifier. You can use a shield and still gain this benefit.

Wisdom-based

While you are not wearing any armor and not wielding a shield your Armor Class equals 10 + your Dexterity modifier + your Wisdom modifier.