Piercer

Ability Score Increase

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

Puncture

Once per turn, when you hit a creature with an Attack that deals Piercing damage, you can reroll one of the attack's damage dice, and you must use the new roll.

Enhanced Critical

When you score a Critical Hit that deals Piercing damage to a creature, you can roll one additional damage die when determining the extra Piercing damage the target takes.