Brave. The knight has advantage on saving throws against being frightened.

Multiattack. The knight uses Shield Charge (if it is able without provoking an Attack of Opportunity) followed by two melee attacks

Greatsword/Greataxe. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 15 (3d6 + 3) slashing damage.

Heavy Crossbow. Ranged Weapon Attack: +2 to hit, range 100/400 ft., one target. Hit: 10 (2d10+3) piercing damage.

Shield Charge. If the Zhentarim Knight moves at least 10 feet in a straight line and ends within 5 feet of a Large or smaller creature, that creature must succeed on a DC 18 Strength saving throw or take 10 (3d6) bludgeoning damage and be knocked prone.

Leadership (Recharges after a Short or Long Rest). For 1 minute, the knight can utter a special command or warning whenever a nonhostile creature that it can see within 30 feet of it makes an attack roll or a saving throw. The creature can add a d4 to its roll provided it can hear and understand the knight. A creature can benefit from only one Leadership die at a time. This effect ends if the knight is incapacitated.

Smite. Immediately after the blackguard hits a target with an attack roll, the blackguard can force that target to make a DC 13 Constitution saving throw. On a failed save, the target suffers one of the following effects of the blackguard’s choice:

Blind. The target is blinded for 1 minute. The blinded target can repeat the save at the end of each of its turns, ending the effect on itself on a success.

Shove. The target is pushed up to 10 feet away and knocked prone.

Parry. The knight adds 4 to its AC against one melee attack that would hit it. To do so, the knight must see the attacker and be wielding a melee weapon.