Defender Maul

You gain a +3 bonus to attack rolls and damage rolls made with this magic weapon.

The first time you attack with the weapon on each of your turns, you can transfer some or all of the weapon's bonus to your Armor Class. For example, you could reduce the bonus to your attack rolls and damage rolls to +1 and gain a +2 bonus to Armor Class. The adjusted bonuses remain in effect until the start of your next turn, although you must hold the weapon to gain a bonus to AC from it.

Topple (Mastery): 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.

Heavy: You have Disadvantage on attack rolls with a Heavy weapon if it's a Melee weapon and your Strength score isn't at least 13 or if it's a Ranged weapon and your Dexterity score isn't at least 13.

Two-Handed: A Two-Handed weapon requires two hands when you attack with it.

Proficiency: martial, maul Source: Dungeon Master's Guide (2024) p. 252