Evolving Weapon (Longsword, Battleaxe)
Infused with otherworldly ichor, this dark blade is given to all Abyss Wardens, forged from the remains of the monsters they've slain. The elegant and virtuous design of the weapon hides its macabre origins. mirroring the Radiant Order it came from.
You can use a bonus action to transform this longsword into a battleaxe, and back into a longsword, sliding the pommel up and down on the blade. As part of this bonus action, you can slam the weapon down, emitting a wave of radiance centered on you. All creatures within 5 feet of you must succeed on a DC 13 Constitution saving throw or take 1d6 radiant damage.
Both forms of the weapon deal an extra 1d6 radiant damage on a hit. In addition, the longsword deals another 1d6 of radiant damage on a hit against aberrations of size Medium or smaller, and the battleaxe another 1d6 radiant damage against aberrations of size Large or bigger.
Proficiency with a Longsword 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.
Sap. If you hit a creature with this weapon, that creature has Disadvantage on its next attack roll before the start of your next turn.
Notes: Damage: Radiant, Bonus: Magic, Shapechanging, Versatile, Sap