Armor Training

Armor training allows you to use armor of a certain category without the following drawbacks. If you wear type=Light Armor, type=Medium Armor, or type=Heavy Armor armor and lack training with it, you have Disadvantage on any D20 Test that involves Strength or Dexterity, and you can't cast spells. If you use a Shield and lack training with it, you don't gain its AC bonus.