Well this was highly unexpected. Well maybe it wasn't. Lucas suddenly appeared from nowhere, attacking the two combatants in the arena and everyone else in the sandlot. Serin was able to easily block the attack with his own wind magic infused blade, batting it away the blades that had also been sent at him with a single swipe of his sword. Unfortunately others weren't as lucky and the bastard even attacked children as well. Serin remembered Lucas from before, as Serin was also there in Radiant Garden at that time, and thus he knew how much of an ass this guy was. 

Then the man seemed to send blades of wind at all of the others, except him, while charging towards Exomin and Eximna. Serin was fine sitting out of the tournament. That was a tournament after all, but he wasn't going to play a hands off approach here in this scenario. A single snap of his fingers was all it took as Serin called forth his magic. A large lightning bolt from the heavens striking straight down onto Lucas right as he dashed towards Exomin and Eximna. Sure Lucas was incredibly fast, but last time Serin checked lightning was much faster than well... many things. After all if Lucas could move faster than around 224,000 miles per hour, although lightning has been known to vary in speeds, but Serin knew that now wasn't really the time for scientific crap. Regardless of how fast it actually could move if Lucas could move as fast as lightning then well... they would be in alot of trouble. 

Of course the red wizard wasn't an idiot. Serin knew that it would take alot more than a single Thundaja spell to take that man down, but it was a nice way to get someone's attention since he wasn't sure how the younger people in this area would fare against such a skilled opponent. Better him than them he supposed.

"What, I'm not good enough to attack?" Serin asked sarcastically as he then threw another lightning bolt right at Lucas with a thrust of his hand towards the man. Luckily Serin had good enough control over his magic to where it would only hurt the target he wanted it to hurt, so even if a spell accidentally hit an ally of his it would just harmlessly pass over them. After all, Serin's magic was an extension of his will, so why would an extension of his own self hurt those he didn't want to hurt.