Rashan Dragonborn (Ra-Shan)

Dragonborn created from and by Rashan Dragons with more serpentine forms. 

All types of Dragons became Rashan and as time passed enough bred that though Rashan dragons are less in number than their Hasrain cousins, the types of dragon (copper, red, moonstone, etc) are more or less equally represented among them. As there are Hasrain Dragonborn there are Rashan as well as half dragons of each variety and other dragonkin.