Lucian underestimated Thorin because he had one arm to defend himself. Even with Thorin's other black sword in the air, Lucian had thought that Thorin wouldn't be able to keep up with his control for long, but Lucian was wrong. Although Thorin had just his left arm to fight with, he was incredibly strong.
'How did he get so strong within a short period of time?' Lucian thought. Out of breath and irritated because his attacks weren't working. He fought with Thorin carefully because he couldn't let Thorin's blade draw out any blood out of him, but now Lucian was starting to feel like all his careful actions were nothing more than a waste. Lucian could hide his knight skill under his villain ability, but in order to defeat Thorin, he needed more power. His beast ability. It's either he fights with it or gets cut down by Thorin's sword.
