Shield Master (Variant)

You've trained extensively using shields in a world of swords and sorcery. You gain the following benefits while you are wielding a shield:

• Increase your Dexterity score by 1, to a maximum of 20.
• If you aren't incapacitated, you can add your shield's AC bonus to any Dexterity saving throw you make against a spell or other harmful effects.
• If you are subjected to an effect that allows you to make a Dexterity saving throw to take only half damage, you can use your reaction to take no damage if you succeed on the saving throw, interposing your shield between yourself and the source of the effect.