Maul Master (5e Feat)
From D&D Wiki
You gain the following benefits:
- You gain a +1 bonus to attack rolls you make with mauls.
- Whenever you have advantage on a melee attack roll you make a maul and hit, you can choose to knock the target prone if the lower of the two d20 rolls would also hit the target.
- Whenever you have disadvantage on a melee attack roll you make a maul, the target takes bludgeoning damage equal to your Strength modifier (minimum of 0) if the attack misses but the higher of the two d20 rolls would have hit.
- When you use a maul, you treat a roll of the weapons damage die as a 2 if a 1 is rolled.