So in this prophecy I'm described as a creature mass destruction and calamity..?

The truth is I'm a size changing dragon who tends to be about 14 meters tall with yellow and green gradiated scales, in fact I am the dragon from the prophecy but ironically I have a passion for music and am a bard. My eyes are green and with my bard magic I can cast healing, persuasion, motivation, envy, sleep, weakness, forced levitation and size-change as well as other offensive techniques... That I avoid using.