Dragon Booster S1 Ep12 - Misjudged

Artha misjudges Kawake, retired champion of the sport of drag-ball. Kawake is ashamed of himself of being paralyzed and Word tells Kawake he can still be the champion if he digs for grey draconium to make him stronger. This is all a trick and Kawake finds himself mining for black draconium directly below the city's support columns