Sap
Mastery Property · SRD 5.2.1 p. 90
If you hit a creature with this weapon, that creature has Disadvantage on its next attack roll before the start of your next turn.
Mastery Property · SRD 5.2.1 p. 90
If you hit a creature with this weapon, that creature has Disadvantage on its next attack roll before the start of your next turn.