Knockout 5.

Whenever Castiel used his flames, either it was blocked by earth or dodged with the increased speed granted by lightning reinforcement. The fight had gone on for a while and his opponent who had been playing safe because he was still yet to see Castiel's second element, had decided to end the match.

He pumped in more mana into the spell causing the lightning arcs to squirm more vigorously as he dashed towards Castiel with his saber in his hand. When he got within range, he made the ground beneath Castiel to turn to quicksand as he followed with a quick jab to his chest.

'Now's my chance...' Copying Luciano's trick, Castiel used his flames to heat his surroundings preventing the ground from softening. His flames were not as hot as that of Luciano's to turn the sand to glass, but once he got his footing, he quickly analyzed the attack and knew this was the chance he had been waiting for.