It was lucky for them that the dragon was chained, reducing its maneuverability. When Saleen saw that the dragon turned around and was about to use dragon's breath on him, he shot a lightning icicle at it.
At the same time, he cast Thundering Phantasm. Twelve Saleens appeared around the dragon. Six of them were illusions created by Saleen's magic while the other six were Thundering Phantasm, having negligible offensive capacity.
The dragon never expected humans to possess such eerie skills. It immediately used mental powers to determine which of them were illusions and which was Saleen's true body.
The dragon's mental powers dashed by six Thundering Phantasms and loud thunder rumbled in every corner of its body.
The dragon dropped to the ground with a whimper. Its soul had already been severely damaged by the Lord of Glory, and it had dropped by two levels. Saleen's Thundering Phantasm burst at the same time, one-upping the dragon.