Weapon (longsword), legendary (requires attunement by a elf or half-elf with neutral good alignment.)
You have a +1 bonus to attack and damage rolls made with this magic weapon.
Attack rolls of 19 or 20 count as critical strikes with this weapon.
This weapon has the finesse property.
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, Weapon Property: Finesse, elf or half-elf with neutral good alignment., Damage, Combat, Versatile, Sap