How about something for DnD Next today?
Level 1: Superior Defense- additional choice
Shield Cover: When you are wielding a shield and you or a creature within 5 feet of you are subject to an effect requiring a save,, you can use your reaction to block the attack. Spend one expertise die, roll it , and add the number rolled to the target’s save value against that attack.
Thoughts gang?
Throat Punch Games 