Guild Wars 2

The fifht race are Dwarves of Deldrimor. After all, we know the Jotuns were great giants, norns are from the same roots as them – Giganticus Lupicus. What happened to jotuns/norns was that Gods stopped favoring them, created humans, and gave the gift of magic to them, after taking it from jotuns/norns. Norns turned to spirts of the wild, but jotuns… wage war against each other and failed….

Then… with that theory in mind… Nightmare Courties, got their point in spreading the nighmtare. And as far as we know, there are other Trees, not influenced by Ventari’s Teachings (Sylvari personal Story). Also when you walk inside Black Citadel, some charr speaks about Sylvari being a new race, which spreads like weed, and surely they will took the world for themselves with such rapid growth.