Archmagus. Whenever Zakirri deals any elemental damage, no matter the source, she can change the damage to cold, fire, or lightning. Additionally, Zakirri can maintain concentration on two different spells at the same time.

Aura of the North (1/day). Zakirri summons the swirling, frigid winds of the frozen north to her aid covering a 150 ft. radius sphere centered on Zakirri. For 1 minute, when creatures enter the aura for the first time on a turn or start their turn there, their vision is reduced to 20 ft., and they take 8 (2d6) cold damage. Additionally, Zakirri has half-cover from creatures further than 20 ft. away from her.

Brutal Strikes. Animalistic and savage describe a White Dragon perfectly, Zakirri's physical attacks suffer a -5 to hit but deal an additional 10 damage (already included in the attacks).

Chromatic Awakening (Recharges after a Short or Long Rest). If Zakirri would be reduced to 0 hit points, her current hit point total instead resets to 573 hit points, her Breath Weapon recharges, and she regains any expended uses of Legendary Resistance. Additionally, Zakirri can now use the options in the “Mythic Actions” section for 1 hour. Award a party an additional 105,000 XP (210,000 XP total) for defeating Zakirri after her Chromatic Awakening activates.

Elemental Master (Cold). Whenever Zakirri deals cold damage, she ignores resistance to cold damage. In addition, when she rolls damage that deals cold damage, she treats any 1 on a damage die as a 2.

Ice Walk. Zakirri can move across and climb icy surfaces without needing to make an ability check. Additionally, difficult terrain composed of ice or snow doesn't cost her extra movement.

Legendary Resistance (4/Day). If Zakirri fails a saving throw, she can choose to succeed instead.

Magical Resistance. Zakirri has advantage on saves against spells and other magical effects.

Magic Weapons. Zakirri's Weapon Attacks are magical.

Spellcasting. Zakirri is a 30th-level spellcaster. Her spellcasting ability is Charisma (spell save DC 24, +16 to hit with spell attacks). She has the following wizard spells prepared:

Cantrips (at will): chill touch, mind sliver, prestidigitation, ray of frost, shocking grasp

1st level (at will): detect magic, magic missile, shield, thunderwave, unseen servant

2nd level (5 slots): blur, enlarge/reduce, mirror image, scorching ray

3rd level (5 slots): dispel magic, hold person, lightning bolt, slow

4th level (4 slots): banishment, dimension door, greater invisibility

5th level (4 slots): cloudkill, dominate person, synaptic static

6th level (3 slots): disintegrate, freezing sphere

7th level (3 slots): forcecage, prismatic spray

8th level (2 slots): mind blank, power word stun

9th level (2 slots): foresight, time stop

10th level (1 slot): any quickened spell of 6th level or lower

11th level (1 slot): any quickened spell of 7th level or lower

Multiattack. Zakirri can cast a spell or use her Frightful Presence. She then makes three attacks: one with her bite and two with her claws.

Bite. Melee Weapon Attack: +13 to hit, reach 20 ft., one target. Hit: 33 (2d12 + 20) piercing damage plus 16 (4d6) cold damage and the target must make a DC 26 Constitution saving throw or have its speed reduced by 20 feet until the end of its next turn.

Claw. Melee Weapon Attack: +13 to hit, reach 15 ft., one target. Hit: 29 (2d8 + 20) slashing damage. If the target is a Huge or smaller creature, it is grappled (escape DC 20) and is restrained until this grapple ends. Zakirri can have only one creature grappled this way at a time.

Tail. Melee Weapon Attack: +13 to hit, reach 30 ft., one target. Hit: 31 (2d10 + 20) bludgeoning damage and the target must make a DC 26 Strength saving throw or be knocked prone.

Frightful Presence. Each creature of Zakirri's choice that is within 150 feet of her and aware of her must succeed on a DC 26 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to Zakirri's Frightful Presence for the next 24 hours.

Breath Weapon (Recharge 5–6). Zakirri has spent centuries honing and perfecting her breath weapon. Zakirri exhales a blast of energy in a 300-foot cone choosing one of the options listed below:

• Freezing Breath. Each creature in that area must make a DC 26 Dexterity saving throw. On a failed save, the creature takes 84 (12d12) cold damage and is restrained until the end of Zakirri's next turn. On a successful save, the creature takes half as much damage and is not restrained.
• Dispelling Breath. Zakirri exhales a purplish light. This cone functions as a dispel magic spell as if cast at 7th level.
• Shard Storm. Dagger like shards of ice pierce every creature in the area. A creature takes 60 piercing damage reduced by an amount equaling their AC score.

Enraged Breakthrough (3/day). At the start of her turn, if Zakirri is suffering from being paralyzed, poisoned, restrained, or stunned she can choose to take 25 Psychic damage (cannot be reduced by any means) to end the effect(s). Furthermore, when using this ability, Zakirri's attack deal an additional damage die on a hit until the start of her next turn.

Negate Spell (5/Day). When Zakirri sees a creature within 60 feet of her casting a spell, she tries to interrupt it. If the creature is casting a spell using a spell slot of 7th level or lower, its spell fails and has no effect. If it is casting a spell of 8th-level spell or higher, it must succeed on a DC 22 Intelligence saving throw, or the spells fails and has no effect.

Zakirri can take 4 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. Zakirri regains spent legendary actions at the start of her turn.

Arcanist. Zakirri casts an “At Will” spell.

Tail Attack. Zakirri makes one tail attack.

Wing Attack (Costs 2 Actions). Zakirri beats her wings. Each creature within 30 feet of him must succeed on a DC 26 Dexterity saving throw or take 20 (3d6 + 10) bludgeoning damage and be knocked prone. Zakirri can then fly up to half her flying speed.

Draconomicon (Costs 3 Actions). Zakirri casts a spell of 5th level or lower.

If Zakirri's Chromatic Awakening trait has activated in the last hour, she can use the options below as legendary actions.

Bite. Zakirri makes one Bite attack.

Frozen Wind (Costs 3 Actions). Zakirri flares with elemental energy. Each creature in a 150-foot-radius sphere centered on her must succeed on a DC 26 Dexterity saving throw or take 40 (8d8) cold damage.