Burgess Brooks

Innate Spellcasting. Burgess's spellcasting ability is Constitution (+4 to hit with spell attacks). He can innately cast the following spells, requiring no material components:

At will: true strike

1/day: cordon of arrows

2/day: guiding bolt, hail of thorns

Unstable Mark. When Burgess uses the Bone Spike or Rage actions every creature within 10 feet of Burgess rolls a DC 13 CON save or they take 1d8 force damage on a failed save and half as much on a successful save.

Multiattack. Burgess makes two attacks. One with his Beholders Bludgeon and his Bone Bolt or two Bone Bolt attacks.

Beholder's Bludgeon. Melee Weapon Attack: +6 to hit, reach 5ft., one target. Hit: 2d6+4 bludgeoning damage. 
Burgess can expend any number of 3 charges to cast dispel magic ,For each charge used the spells level goes up by 1 starting from 3rd Level.

Bone Bolt. Ranged Weapon Attack: +4 to hit, range 50/100ft., one target. Hit: 1d6+3 piercing damage

Rage. 

When Burgess is raging, he can make a bonus melee weapon attack against a target within 5 feet of him, on a hit the target takes 1d4+4 piercing damage. Additionally when he uses his Attack action to grapple someone the target takes 3 piercing damage upon winning the check