Shield Fighter

You use shields not just for protection but also for offense. You gain the following benefits while you are wielding a shield:

• 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 effect that targets only you.
• 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.
• You can use a shield as your unarmed strike so you can roll 1d6 plus your strength bonus The creature you attacked rolls a 15 con save if your strength is 15 or higher, if they fail they get pushed 10 feet. But if your strength score is 10-14 then the save is 10 or higher and get pushed 5 feet. If your strength score is lower than 10 then the they have to roll 10 or less if they fail they get pushed 5 feet.