Just a repost that the lore information from LO doesn't get lost in the suggestion thread.

Quote Originally Posted by LaughingOtter View Post
"Primal magic" is called that because it existed first. It is the raw magic from which Istara formed the world. Drulkar manifested in the Prime in order to bring his people through from the Realm of Fire, and the form he chose, the dragon, established the form his people would take. Dragons, as a race, were formed by and of Primal magic as part of assuming physical form.

The other races appeared well after Istaria was created, and thus were subject to Istara's design decisions. Non-dragons cannot use Primal because it is outside the laws that give them life.

However... (And here I can't resist pulling the curtain back a little)

Dragons have, in the past, learned to use biped magics. Most of the time, these dragons have died under the claws and flames of an angry mob...