Onslaught Mastery

You've mastered using your momentum to your advantage, effectively pummeling creatures into submission and keeping them down once they fall. You gain the following benefits:

• When a creature falls prone within 5 feet of you, they provoke an opportunity attack from you.
• When you would have advantage on a melee weapon attack due to a creature being prone, you can reroll one of the dice once.
• When a prone creature within 5 feet of you attempts to stand, they provoke an opportunity attack from you.
• Once on each of your turns, if you move at least 10 feet in a straight line towards a creature immediately before hitting it with a melee weapon attack, you can deal additional damage equal to your proficiency bonus.