Lucerne (5e Equipment)
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Martial Melee Weapons
Lucerne is a hybrid between a halberd and a warhammer. Its pick-like blade is offset by a robust hammer, but its unique hammer's shape and extended spike give it an equally unique wielding bonus.
Spin Sweep. Lucerne may be used to perform a sweeping attack which deals 1d8 bludgeoning damage and may knock an opponent prone. On hit, the enemy must pass a Strength check of DC 8 + Your Proficiency + Your Strength Modifier. On failure, they are knocked prone. On success, they take damage but are not knocked prone.
Overhead Followup. If you are successful in knocking an opponent prone with Spin Sweep, you may use your bonus action to make an overhead attack while they are prone. This attack has advantage as normal against Prone enemies.