Armor Class 19
Hit Points 195 (26d10 + 52)
Speed 5 ft., fly 40 ft.
Saving Throws CON +7, WIS +7
Skills Perception +12
Damage Immunities poison
Condition Immunities charmed, exhaustion, paralyzed, petrified, poisoned, prone
Senses Darkvision 120 ft., passive Perception 22
Languages Deep Speech, Undercommon
Challenge 14
Legendary Resistance (3/Day, or 4/Day in Lair). If the death tyrant fails a saving throw, it can choose to succeed instead.
Multiattack. The death tyrant uses Eye Rays three times.
Bite. m +9, reach 5 feet. Hit: 13 (2d8 + 4) Piercing damage.
Eye Rays. The death tyrant randomly shoots one of the following magical rays at a target it can see within 120 feet of itself (roll 1d10; reroll if the death tyrant has already used that ray during this turn):
Negative Energy Cone. The death tyrant's central eye emits an imperceptible, magical wave of negative energy in a 150-foot Cone. Creatures in that area can't regain Hit Points until the start of the death tyrant's next turn. An intact Humanoid corpse there instantly rises as a Zombie under the death tyrant's control and takes its turn immediately after the death tyrant on the same initiative count.
Chomp. The death tyrant makes two Bite attacks.
Glare. The death tyrant uses Eye Rays.
Monster Manual (2024), p. 95