Iron Knuckle (fighting style)

Iron Knuckle is a fighting style. While you have this style, you gain these benefits:
     While you are wielding two gauntlets or one lizal gauntlet, you gain the following benefits:

• Your AC increases by 2 if your hands aren't holding anything other than a melee weapon. This counts as a shield, so you cannot gain this benefit in addition to the AC increase of another shield.
• Your damage die increases by one step for the gauntlet, becoming 1d6.
• When a creature enters your reach on its turn, you can use your reaction to make one melee weapon attack targeting that creature.