S2·E4 An Ancient Pledge! One Who Seeks Immortality!

They visit both Tarimu and Demia and they think Halcyform, the former guild director, did it to them.

Lina and the gang go to Halcyform's home, which is the only place isn't damage, and they find out Halcyform pledge to the monsters (or to Saygram) to become immortal.

Halcyform seem to powerful for them, but Lina trapes him in ice. Saygram wants to attack, but Xellos shows up, and Xellos tells him not to. Saygram retreats, and Xellos talks to them. He was about to explain how to kill Halcyform, but Lina beat him to it, explaining that inorder to kill the pledge, you must destory the stone that he pledge.