thanks to y/n dragon aspect and Ten thousand of dragon souls (With some cheats) his power has evolved to the point of gaining the power to transform into a dragon.

Dragon soul aspect (Unlocked)

the aspect can buff your magic, your shouts, buff your defence against threats physical and magical and grants you the ability to fly.

(Chose the colour of your choice)

Dragon Avatar (Unlocked)

this form can tank all of the hits and has enhanced strength that can rip and tear any Armor, he can only use his shouts and can't fly but can climb.

(Chose the colour of your choice)

True Dragon (Locked)

this form is the is a powerhouse but not really godlike, this form is locked the key to unlocking is to consume the soul of Hræzlyr.

(Chose the colour of your choice)

And lastly

Akatosh (Locked)

This form is an endgame a form of a true god of a dragonborn and how to Unlocked it is unknown but time will tell.