1. Buy a hatchling (i suggest you Wind Dragon 35lvl [549HP], because he has less HP than others)
2. Kill him, till he become lvl 1
3. Find a suitable place (ex. Cruma tower).
4. Find someone, call him noob, !@#$%^&* or sth, tell him that if he hitted your dragon he would die.
5. People love challanges so i think that many of them would hit your lvl 1 dragon.
6. Guess what happens next , this is the funniest part, he will become red, so take care of him and his items