Brigand Cutthroat

Shank (1/Turn). Once per turn, the Brigand Cutthroat can deal an extra 3(1d6) damage to one creature it hits with a Dagger Attack if it has advantage on the Attack roll.                                                                                                                                                            The Cutthroat doesn't need advantage on the Attack roll if another enemy of the target is within 5 feet of it, that enemy isn't incapacitated, and the Cutthroat doesn't have disadvantage on the Attack roll

Multiattack. The Bandit Cutthroat makes 2 attacks, the second one is made with disadvantage

Dagger. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d4+1) slashing damage.