Arkhan

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

Aura of Hate. While Arkhan isn’t incapacitated, he and all fiends and undead within 30 feet of him deal 4 extra damage whenever they hit with a melee weapon attack (already factored into Arkhan’s attacks). This extra damage is of the same type as the weapon’s damage type.

Wreath of Prism. When Arkhan lands a hit on a beast, dragon, or monstrosity of CR 15 or lower, or when grappled, he can use the wreath to cast dominate monster (save DC 17). On a successful save, the target is immune to the effect of the power of the wreath for 24 hours. On a failed save, a shimmering collar or crown appears on the target. If Arkhan uses the wreaths power to dominate another creature while it has already dominated one already than the initial target is no longer affected and becomes free with the knowledge of who charmed it.

Claw of the Dragon. The [Tooltip Not Found] has 8 charges and regains 1d4 + 4 expended charges daily at dawn. Arkhan can cast the following spells from the hand by expending the specified number of charges (spell save DC 18): Draconic transformation (5 charges), Witch Bolt (1 charge), Ashardalon's Stride (2 charges), and Prismatic Spray (3 charges).

Innate Spellcasting. Arkhan’s spellcasting ability is Charisma (spell save DC 17). He can cast the following spells, requiring no material components:

3/day each: animate dead, branding smite (at 4th level), revivify

1/day each: geas, raise dead

Special Equipment. Arkhan wields Fane-Eater and wears a suit of Obsidian Flint Dragon Plate. The armor gives Arkhan advantage on ability checks and saving throws made to avoid or end the grappled condition on him.

Multiattack. Arkhan makes three weapon attacks.

Fane-Eater (Battleaxe). Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 16 (1d8 + 12) slashing damage, or 17 (1d10 + 12) slashing damage when used with two hands, plus 9 (2d8) cold damage. If the target is a creature and Arkhan rolls a 20 on the attack roll, the creature takes an extra 9 (2d8) necrotic damage, and Arkhan regains an amount of hit points equal to the necrotic damage dealt.

Javelin. Melee or Ranged Weapon Attack: +10 to hit, reach 5 ft. or range 30/120 ft., one target. Hit: 8 (1d6 + 5) piercing damage, plus 4 piercing damage and 9 (2d8) cold damage if the javelin was used to make a melee attack.

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