Bone Tyrant

Spellcasting: The Bone Tyrant is a 10th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 16, +8 to hit with spell attacks). It has the following spells prepared:

Toll the Dead: The target must succeed on a DC 16 or take 2d12 necrotic damage.

Ray of Sickness: Ranged Spell Attack: +8 to hit, range 60 ft., one target. Hit: 3d8 poison damage, and the target must succeed on a DC 16 or be poisoned until the end of its next turn.

Animate Dead: The Bone Tyrant chooses up to 2 small or medium corpses within 10 feet and raises them as skeletons or zombies. They follow the Bone Tyrant's commands.

Undead Fortitude: If damage reduces the Bone Tyrant to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the Bone Tyrant drops to 1 hit point instead.

Multiattack. The Bone Tyrant makes two attacks with its Bone Scythe.

Bone Scythe: Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 27 (5d10) slashing damage plus 13 (3d8) necrotic damage.

Grave Command: The Bone Tyrant can command undead creatures within 60 feet that can hear it. They must make a Wisdom saving throw against a DC of 15. On a failure, the undead must use their next action to obey the Bone Tyrant’s command.

Hellfire Orb (1/Day). The Bone Tyrant hurls a magical ball of fire that explodes at a point it can see within 120 feet of it. Each creature in a 20-foot-radius sphere centered on that point must make a DC 18 Dexterity saving throw. The sphere spreads around corners. A creature takes 35 (10d6) fire damage and 35 (10d6) necrotic damage on a failed save, or half as much damage on a successful one.

Parry. The Bone Tyrant AC against one melee attack that would hit it. To do so, the Bone Tyrant must see the attacker and be wielding a melee weapon.