Spiked Armor Mastery

Increase your Strength or Constitution score by 1, to a maximum of 20.

You gain the ability to use spiked armor as a weapon.

While you are wearing spiked armor you can use a bonus action to make one melee weapon attack with your armor spikes against a target within 5 feet of you. If the attack hits, the spikes deal 1d4 piercing damage. You use your Strength modifier for the attack and damage rolls.

Additionally, when you use the Attack action to grapple a creature, the target takes 3 piercing damage if your grapple check succeeds.