Burningbringer

Amphibious. The dragon can breathe air and water.

Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead

Spellcasting. Burningbringer is a 20th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 26, +18 to hit with spell attacks). Burningbringer has the following wizard spells prepared:

• Cantrips (at will): Fire Bolt, Prestidigitation, Mage Hand, Minor Illusion, Mold Earth
• 1st level (4 slots): Mage Armor, Magic Missile, Shield, Burning Hands
• 2nd level (3 slots): Misty Step, Scorching Ray, Mirror Image
• 3rd level (3 slots): Counterspell, Fireball, Dispel Magic
• 4th level (3 slots): Greater Invisibility, Polymorph, Ice Storm
• 5th level (3 slots): Wall of Force, Cone of Cold, Bigby's Hand
• 6th level (2 slots): Chain Lightning, Globe of Invulnerability
• 7th level (2 slots): Teleport, Delayed Blast Fireball
• 8th level (1 slot): Dominate Monster, Sunburst
• 9th level (1 slot): Time Stop, Wish

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Multiattack. The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +17 to hit, reach 15 ft., one target. Hit: 21 (2d10 + 10) piercing damage.

Claw. Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 17 (2d6 + 10) slashing damage.

Tail. Melee Weapon Attack: +17 to hit, reach 20 ft., one target. Hit: 19 (2d8 + 10) bludgeoning damage.

Frightful Presence. Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 24 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 the dragon's Frightful Presence for the next 24 hours.

Breath Weapons (Recharge 5–6). The dragon uses one of the following breath weapons.

Fire Breath. The dragon exhales fire in a 90-foot cone. Each creature in that area must make a DC 24 Dexterity saving throw, taking 71 (13d10) fire damage on a failed save, or half as much damage on a successful one.

Weakening Breath. The dragon exhales gas in a 90-foot cone. Each creature in that area must succeed on a DC 24 Strength saving throw or have disadvantage on Strength-based attack rolls, Strength checks, and Strength saving throws 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.

Change Shape (Eladrin Form). The dragon magically polymorphs into an Eladrin whose seasonal form reflects its current emotional state, or back into its true form. While in Eladrin form, it appears as a tall, ethereal elf with features tied to one of the four seasons (spring, summer, autumn, or winter). It reverts to its true form if it dies. Any equipment it is wearing or carrying is absorbed or borne by the new form (the dragon's choice).

In Eladrin form, the dragon retains its alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics are otherwise replaced by those of an Eladrin, except for its class features, Legendary Actions, and the seasonal abilities associated with its current form.

When interacting in its Eladrin form, the dragon uses this guise to communicate and connect with mortals, reflecting a more approachable and less imposing demeanor while retaining its immense magical power.

Burningbringer can take 3 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. Burningbringer regains spent legendary actions at the start of its turn.

Detect

The dragon makes a Wisdom (Perception) check.

Tail Attack

The dragon makes a tail attack (only available in its true form).

Flame Step (Costs 2 Actions)

Burningbringer teleports up to 18 meters to an unoccupied space it can see, leaving behind a burst of fey fire. Each creature within 3 meters of the space it left must succeed on a DC 24 Dexterity saving throw or take 14 (4d6) fire damage.

Seasonal Surge (Costs 2 Actions)

While in Eladrin form, Burningbringer channels the power of its current seasonal guise to unleash an area effect:

• Spring: Healing energy surrounds it. Burningbringer and all creatures of its choice within 9 meters regain 20 hit points.
• Summer: A wave of intense heat bursts forth. Each creature of its choice within 9 meters must succeed on a DC 24 Constitution saving throw or take 21 (6d6) fire damage.
• Autumn: Burningbringer exudes an aura of enchantment. Each creature of its choice within 9 meters must succeed on a DC 24 Wisdom saving throw or become charmed for 1 minute (the charmed condition ends early if the creature is damaged).
• Winter: A freezing gale emanates from Burningbringer. Each creature of its choice within 9 meters must succeed on a DC 24 Strength saving throw or be restrained by ice for 1 minute. A creature restrained this way can use its action to make a Strength saving throw, ending the effect on itself on a success.