Vojvoda

One Man Band(Mythic Trait; Recharges after a Short or Long Rest). If Vojvoda is reduced below 0 health it draws from the power of it's shackle activating it's effects and his mythic form. It also regains 100hp with 50 temp hp.

Luring Maestro. While within 60 feet of the Vojvoda, creatures have disadvantage on saving throws against charm magic.

Magic Resistance. Vojvoda has advantage on saving throws against spells and other magical effects.

Legendary Resistance (2/Day). If Vojvoda fails a saving throw, it can choose to succeed instead.

Innate Spellcasting. Vojvoda's spellcasting ability is charisma (spell save DC 17). Vojvoda can innately cast the following spells, requiring no material components:

At will: shatter, phantasmal force, major image thunder step, mirror image, dispel magic

3/day each:confusion, charm monster, synaptic static, greater invisibility, mislead

1/day each:  Otto's Irresistible Dance, mass suggestion,power word stun

Multiattack. Vojvoda makes one attack with it's Thunderbuss and cast one spell.

Bladed Snare. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 6 (2d4 + 1) slashing damage.

Thunderbuss. Vojvoda fires in an 15-foot cone. Each creature in that cone must make a DC 17 Constitution saving throw, taking 16 (3d10) thunder damage on a failed save and is knocked back 10ft, or half as much damage and is unmoved on a successful one.

Luring Song (mythic). Vojvoda plays a magical melody. Every humanoid and giant within 300 feet of Vojvoda that can hear the song must succeed on a DC 17 Wisdom saving throw or be charmed until the song ends. Vojvoda must take a bonus action on its subsequent turns to continue playing. It can stop playing at any time. The song ends if Vojvoda is incapacitated.

While charmed by Vojvoda, a target is incapacitated and ignores other charming effects. If the charmed target is more than 5 feet away from Vojvoda, the target must move on its turn toward Vojvoda by the most direct route, trying to get within 5 feet. It doesn't avoid opportunity attacks, but before moving into damaging terrain, such as lava or a pit, and whenever it takes damage from a source other than Vojvoda, the target can repeat the saving throw. A charmed target can also repeat the saving throw at the end of each of its turns. If the saving throw is successful, the effect ends on it.

A target that successfully saves is immune to this harpy's song for the next 24 hours.

Visage of Desire (mythic recharge 6). Vojvoda projects a vision into the minds of creatures within 30 feet of it that aren’t constructs or undead, showing each creature achieving whatever it most desires. An affected creature must succeed on a DC 17 Wisdom saving throw or drop whatever it is holding and become paralyzed until the end of its next turn.

Instinctive Charm. If a creature Vojvoda can see makes an attack roll against it while within 30 feet of it, Vojvoda can use a reaction to divert the attack if another creature is within the attack’s range. The attacker must make a DC 17 Charisma saving throw. On a failed save, the attacker targets the creature that is closest to it, not including itself or Vojvoda. If multiple creatures are closest, the attacker chooses which one to target. On a successful save, the attacker is immune to this Instinctive Charm for 24 hours. Creatures that can’t be charmed are immune to this effect however the attack is made at disadvantage.

Vojvoda can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The warlord regains spent legendary actions at the start of its turn.

Move. Vojvoda moves up to its speed without provoking opportunity attacks.

Pyrotechnics. Vojvoda can cast the pyrotechnics spell.

Battle Choreography (Costs 2 Actions). Vojvoda can choose up to 5 creatures it can see and that can see it within 60 ft. Each creature can immediately use its reaction to move up to its speed, without provoking opportunity attacks. 

If Vojvoda's mythic trait is active, it can use the options below as legendary actions for 10 minutes and gains an additional legendary action per round.

At-Will Spell. Vojvoda casts one of its at-will spells.

Thunderbass. Vojvoda can use its Thunderbass.