[Once again, apologies, but I dislike writing out his transformations...]
From Tara's vantage point, nothing could be seen, but she would hear bones snapping, stretching, spreading, and resetting themselves as the large man underwent a drastic transformation. Loud creaking sounds, like that of stretching leather, would echo over the peaks.
Then a titanic roar would echo even louder, so loud that even the stones would rattle, dancing upon the rock they stood upon.
A fairly long, sinuous neck attached to a huge head crowned with many spikes peaked over the mountain, huge all-red eyes glowing like fire, would loom over Tara suddenly. Huge breaths of air would blow her clothes and hair about with each exhale, strong but not so much to cause her to lose her balance.
There, Tara. See me now as I am, truly.
The massive dragon, at a crouch, suddenly stood and from foot to back, he stood over forty feet tall, coated in armorlike, jet black scales. Huge wings spread out to a span of over one hundred fifty feet, blotting out the light. A great finned tail slapped the earth almost two hundred feet away, shaking the mountain.
I am Marakai. And I am the Prince of dragons.