Ironclad Physique

You have learned to move and fight in a way that uses your raw physical power to deflect blows, rather than relying on agility.

You gain the following benefits: Ability Score Increase. Increase your Strength, Dexterity, or Constitution score by 1, to a maximum of 20.

Ironclad Defense. When you are wearing light or medium armor, you can use your Strength modifier in place of your Dexterity modifier when determining your Armor Class. If the armor has a maximum bonus to Armor Class, that limit applies to your Strength modifier in the same way it would apply to your Dexterity modifier.