Captain Regastus

 Leading from the Front. When Captain Regastus is in combat and an ally is within 30 feet, that ally gains advantage on Constitution, Dexterity, and Strength saving throws. Captain Regastus also gains 1 additional Legendary Action wile allies are within range.

Spellcasting. Captain Regastus is a 6th-level spellcaster. His spellcasting ability is [Charisma] (spell save DC 15, +4 to hit with spell attacks). Captain Regastus has the following spells prepared: 

Cantrips (at will): Chill Touch, Eldritch Blast, Minor Illusion, 
1st level (3 slots): Cure Wounds, Cause Fear, Bless

2nd level (2 slots): Blindness/Deafness, Enhance Ability

3rd level (1 slot): Bestow Curse

Slash 'n' Bash. Captain Regastus can make a multiattack on any enemy within 15 feet who has not disengaged. He makes one Hand-and-a-Half Sword attack (+3 to hit, 2d8+4 slashing). He then smashes with his shield (+3 to hit, 1d4+1 bludgeoning). If the target fails a Strength saving throw of 15, they stumble and Captain Regastus makes another Hand-and-a-Half Sword attack with advantage.

Hand-and-a-Half Sword. Melee Weapon Attack: +3 to hit, reach 5 ft., 1 target. Hit: 12 (2d8 + 4) slashing damage. 

Throwing Knife. Ranged Weapon Attack: +2 to hit, range 15/40 ft., 1 target. Hit: 7 (2d4 + 3) piercing damage.

Shielded. If Captain Regastus is attacked with a ranged weapon from more than 15 feet away, he raises his shield to block or deflect the projectile. If he succeeds a Dexterity 15 saving throw, he takes no damage. If he fails, he takes half damage from the projectile.

Captain Regastus has 1 Legendary Action (2 if within 30 feet of an ally) which refreshes after the end of his turns. 

Helping Hand (Costs 1 Action). When an enemy is making a melee attack on one of Captain Regastus' allies within 15 feet, Regastus may intercept and parry their blow. He may take this action after the enemy has made a successful attack roll. The attacker does not roll damage. If Captain Regastus rolls a higher attack roll (with +3 modifier) than the attacker's roll, he may make a Hand-and-a-Half Sword attack.

Counterstrike (Costs 1 Action). After an enemy has made a successful melee attack against Captain Regastus, he may roll to attack with his Hand-and-a-Half Sword before the enemy may disengage or make any movements or bonus actions.

Magical Interruption (Costs 1 Action). If an enemy has cast a successful spell on Captain Regastus, he may cast a spell before theirs takes effect. This spell's consequences take effect and then the enemy's spell proceeds.