You gain a +1 bonus to attack and damage rolls made with this magic weapon.
Bane of the Undead (Requires Attunement). While you are attuned to this weapon and holding it, your Strength score increases by 4, but cannot exceed 20. When you roll a 20 on an attack roll made with this weapon against an undead creature, the creature must succeed on a DC 17 Constitution saving throw or die. If your ability score is 20 when it is attuned, you can use this weapon one-handed.
The hammer also has 5 charges. While attuned to it, you can expend 1 charge and make a ranged weapon attack with the hammer, hurling it as if it had the thrown property with a normal range of 20 feet and a long range of 60 feet. If the attack hits, living things within 30 feet of it begin to wither, their vitality draining from them. The target and every creature within 30 feet of it must succeed on a DC 17 Constitution saving throw or be stunned until the end of your next turn. The hammer regains 1d4 + 1 expended charges daily at dawn.
Proficiency with a Maul allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Topple. If you hit a creature with this weapon, you can force the creature to make a Constitution saving throw (DC 8 plus the ability modifier used to make the attack roll and your Proficiency Bonus). On a failed save, the creature has the Prone condition.
Notes: Bonus: Strength Score, Bonus: Magic, Damage, Buff, Combat, Heavy, Two-Handed, Topple