A black gold crown with five points. Each point is a dragon head representing the 5 dragon colors and is adorned with corresponding gemstones: white diamond for white dragons, black diamond for black dragons, ruby for red dragons, emerald for green dragons, and sapphire for blue dragons. This crown emits an ominous aura, as if an unspeakable power is trapped within the confines of the apparel.

While wearing the crown, you are granted resistance to lighting, acid, fire, poison, and cold damage. You can also use a bonus action to charm a draconic creature you can see (dragonborn, dragons, kobolds, etc.). The target must make a Wisdom save of DC 20 or be charmed for 1 hour.

The crown has 5 charges and each charge corresponds to a dragon breath weapon on the Dragon Breath Weapon Table. You can spend a charge to use a draconic breath weapon of your choice as an action. You can use your spellcasting ability instead of Constitution for your save DC, dealing 5d6 of your chosen damage type on a failure and half as much damage on a success. Afterwards, you cannot utilize that breath weapon type and must choose another on the next charge. Alternatively, the user can spend all 5 charges to cast Prismatic Spray without expending a spell lot or requiring material components. Once all charges have been expended, you can recover the charges the next dawn.

Cursed. When you regain charges for the crown at dawn, you must make a DC 20 Wisdom saving throw. On failure, your mind becomes corrupted by the evil influence of the crown, compelling you to follow the will of Tiamat. You cannot willingly target a dragon with damaging spells and when you target a creature with a damaging spell, you must roll a d20. On a roll of 10 or less, you target an ally instead of your intended mark. This curse can be undone by the spells Greater Restoration and Wish. You can also reroll the Wisdom saving throw at disadvantage when you regain charges at dawn. 

Dragon Breath Weapon Table

Notes: Resistance: Acid, Resistance: Cold, Resistance: Fire, Resistance: Lightning, Resistance: Poison, spellcaster, Cursed, Headwear