Avenger. When you roll a natural 19 or 20 on an attack roll against a creature, that creature becomes surrounded by a bright outline. All attacks against that creature, magical or otherwise, until the end of battle, are now made with advantage (this includes attacks by other player characters and/or creatures.)
Proficiency with a Warhammer 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.
Push. If you hit a creature with this weapon, you can push the creature up to 10 feet straight away from yourself if it is Large or smaller.
Notes: May be attuned by any Paladin., Damage, Combat, Versatile, Push