Avatar of the Dragon

1/day: You assume the spectral form of an ancient gold dragon for 1 minute. 
Your game statistics are replaced by the statistics of the ancient gold dragon, though you retain your alignment and Intelligence, Wisdom, and Charisma scores. You also retain all of your skill and saving throw proficiencies, in addition to gaining those of the creature. If the creature has the same proficiency as you and the bonus listed in its statistics is higher than yours, use the creature’s bonus in place of yours. You can’t use any legendary actions or lair actions of the new form. You can use legendary resistances.
You assume the hit points and Hit Dice of the new form. When you revert to your normal form, you return to the number of hit points you had before you transformed. If you revert as a result of dropping to 0 hit points, any excess damage carries over to your normal form. As long as the excess damage doesn’t reduce your normal form to 0 hit points, you aren’t knocked unconscious.
You retain the benefit of any features from your class, race, or other source and can use them.
When you transform your equipment merges into the new form, or is worn by it. Worn equipment functions as normal. The DM determines whether it is practical for the new form to wear a piece of equipment, based on the creature’s shape and size. Your equipment doesn’t change shape or size to match the new form, and any equipment that the new form can’t wear must either fall to the ground or merge into your new form. Equipment that merges has no effect in that state.
You may choose to revert back to your normal form before the 5 rounds are completed.