Weapon (longsword), rare (requires attunement)
You have a +1 bonus to attack and damage rolls made with this magic weapon.
Wyrmdrinker: When a dragon is critically hit or slain with this weapon, for the next 1d100 days, this weapon deal an additional 2d4 damage of the dragon's type.
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: Bonus: Magic, Damage, Combat, Versatile, Sap