Mace of Smiting

You gain a +1 bonus to attack and damage rolls made with this magic weapon. The bonus increases to +3 when you use the mace to attack a construct.

When you roll a 20 on an attack roll made with this weapon, the target takes an extra 7 Bludgeoning damage, or an extra 14 Bludgeoning damage if it's a construct. If a construct has 25 hit points or fewer after taking this damage, it is destroyed.

Note: According To The SRD, It Is An Extra <button Type="button" Class="dnd-dice-roll Dnd-dice-roll-damage" Data-dice-expression="2d6" Aria-label="Roll 2d6" Title="Click To Roll 2d6"><span Class="dnd-dice-icon" Aria-hidden="true"><img Src="/assets/images/icons/dice_roll.png" Class="cauldron-custom-icon Is-small" Alt="" Aria-hidden="true"></span><span>2d6</span></button> And <button Type="button" Class="dnd-dice-roll Dnd-dice-roll-damage" Data-dice-expression="4d6" Aria-label="Roll 4d6" Title="Click To Roll 4d6"><span Class="dnd-dice-icon" Aria-hidden="true"><img Src="/assets/images/icons/dice_roll.png" Class="cauldron-custom-icon Is-small" Alt="" Aria-hidden="true"></span><span>4d6</span></button> Bludgeoning damage, Although This Is Incorrect</span>.