Why limit ourselves to dragons?
Dragons are THE ultimate evil in Tyria. They are compared to natural disasters. In the Edge of Destiny book, many “Ooo and Awe” at DE for killing dragon champions and attempting to take down Kralkk. They were legends for a short moment, until they fail at taking down Kralkk and split up.
If you kill a dragon in the world of Tyria, there isn’t anything that you can’t slay.