Peri was a magical being, and one of the greatest spirits to belong to Izek, so Haya could not control him. It was not his.
Besides its cute appearance and its ability to erase memories, it had another skill. The ghost Peri's tail was made for fighting.
Every time the tail is in fighting mode, it turns into a stone. The tail of Peri could kill people/creatures with just one blow, but Lucas did not know that.
Lucas' main goal was to erase the person's memory and bring them to Haya. He thought that Haya had more experience and would know what to do with this mysterious man.
He also did not think much of the person's own abilities. He had no idea what else he could do besides his staff and teleportation, but he did not need to any more, because Lucas was prepared to lose everything to win against him.
Those who touch people he values the most must suffer, and he will do anything to complete his own words.
*Qrueeeek*
Peri's tail of steel hit the side of the man's cheek.
