The head warden's act of putting away the dagger gave Saleen an opening to fire a lightning bolt from his family badge.
An opportunity like this would present itself only once. That was not just because the head warden would be more careful from then on, but because his family badge was still only capable of casting its strongest attack a single time.
Saleen worked on the badge, but he had only begun learning the knowledge stored inside and how to use the interior spaces.
Those spaces would have wrecked any common items stored inside. That was why Saleen could only put high-level materials there. The environments within, which all had to do with discharges of lightning and thunder, were ironically the best natural milieu for refining and upgrading materials.