Jailer
"All right… it is working just as planned," Sigma said and then saw dozens of enemies charging in his direction. "Perhaps I need to be a bit faster, though."
The third spear flew toward another enemy, but the creature managed to stop the attack with his own spear in time. He was pushed backward for several meters, but he stopped the attack all right. Sigma felt that the result would have been different if he had enhanced his spears. However, he focused all his time on improving Telekinesis, so that ability still was weak.
Nevertheless, Sigma increased the power of the link between his weapons and him. Then it made the weapons fly faster around and hit the enemies. Even before they could feel Sigma's bloodlust, the weapons pierced through their necks. He ended up using all the mana he had recovered after killing a single enemy during those few seconds, but he recovered five times more.