22 (natural armor)
370 (19d20+171)
walk 40 ft., climb 30 ft., fly 80 ft.
Con +17, Int +18, Wis +11
Arcana +18, Insight +11, Perception +11
cold, psychic, thunder
fire, lightning
charmed
blindsight 60 ft., darkvision 120 ft.
Common, Draconic
26
If Niv-Mizzet fails a saving throw, he can choose to succeed instead.
Niv-Mizzet can maintain concentration on two different spells at the same time. In addition, he has advantage on saving throws to maintain concentration on spells.
Niv-Mizzet has advantage on saving throws against spells and other magical effects.
When Niv-Mizzet casts a spell that deals damage, he can change the spell's damage to cold, fire, force, lightning, or thunder.
Niv-Mizzet is a 20th-level Izzet spellcaster. His spellcasting ability is Intelligence (spell save DC 26, +18 to hit with spell attacks). He has the following wizard spells prepared: • Cantrips (at will): fire bolt, light, prestidigitation, ray of frost, shocking grasp • 1st level (4 slots): detect magic, magic missile, shield, thunderwave, unseen servant • 2nd level (3 slots): blur, enlarge/reduce, flaming sphere, hold person, scorching ray • 3rd level (3 slots): counterspell, fireball, lightning bolt, slow • 4th level (3 slots): confusion, dimension door, fabricate • 5th level (2 slots): conjure elemental, polymorph, wall of fire, wall of force • 6th level (1 slots): chain lightning, disintegrate, true seeing • 7th level (1 slots): project image, reverse gravity, teleport • 8th level (1 slots): control weather, maze, power word stun • 9th level (1 slots): prismatic wall
Niv-Mizzet makes three attacks: one with his bite and two with his claws.
Melee Weapon Attack: +17 to hit, reach 15 ft., one target. Hit: 18 (2d8 + 9) piercing damage plus 14 (4d6) fire damage.
Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 14 (2d4 + 9) slashing damage.
Melee Weapon Attack: +17 to hit, reach 20 ft., one target. Hit: 16 (2d6 + 9) bludgeoning damage.
Niv-Mizzet exhales fire in a 90-foot cone. Each creature in that area must make a DC 25 Dexterity saving throw, taking 91 (26d6) fire damage on a failed save, or half as much damage on a successful one.
Niv-Mizzet can take 4 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. Niv-Mizzet regains spent legendary actions at the start of its turn.
Niv-Mizzet casts one of his cantrips.
Niv-Mizzet makes a tail attack.
Niv-Mizzet beats his wings. Each creature within 15 feet of him must succeed on a DC 25 Dexterity saving throw or take 14 (2d4 + 9) bludgeoning damage and be knocked prone. Niv-Mizzet can then fly up to half his flying speed.
Niv-Mizzet regains a spell slot of 3rd level or lower.