Spiked Armor Master

You have become a master in the usage of spiked armor. While wearing spiked armor, you gain the following benefits:

When you make an unarmed strike with your gauntlets, you may choose to deal piercing damage instead of bludgeoning damage on a hit. You gain +1 to hit and damage rolls with your unarmed attack. 

When a creature misses it's attack against you, you may use your reaction to attempt to body check your foe. Make an opportunity attack, with STR and proficiency, against your opponent. On a success, they take 1d6 piercing and must succeed a strength check against your strength save dc, or be knocked prone.