A Silver Dragon! You state.
"Very well" says the Dragon. He takes a deep breath and fires a Silvery-white light at you. You feel the changes begin almost immidietly. Your nose pushes out into a snout as your mouth steches out as well, your pants rip as your legs grow huge and bulky.
You feel your arms becoming more powerful as they gain muscle and transform into Dragon arms. Your hands turn into dragon hands and your nails stretch out into deadly looking claws and you see your sneakers tear apart as your feet begin to grow larger and your toenails morph into claws as well.
Your shirt rips as your Dragified Belly pushes out. Your skin begins to itch like heck as scales push out of your skin. Your eyes are suddenly blinded by a bright flash of light and You see that your new Silver Scales are shining in the bright sunshine.
You mouth itches as your new teeth grow in and new teeth replace your old as you gain Dragon teeth. Your pants rip away fully as your Dragon hide pushes out your behind and a long silver tail grows out of your behind. Your back aches as silver wings appear and you let out a roar as the morph comes to an end.
"There you are kid, enjoy life as a Silver Dragon" says the Dragon.
"Thank you very much" you say in your new Silver Dragon voice. You spread your new wings and fly up into the clear blue sky, your silver scales shining in the bright sun. As you fly through the air in the clouds, you realize this the best thing that has ever happened to you.