Register 10 creatures in the Bestiary. After you find the first 10 entries, go back and report it. Afterwards, you can continue to find more; you receive an onscreen message when you have fulfilled the quest objective and the quest will update. Now, you need to find even more creatures; you should return to Jassad each time you receive the onscreen message to get your reward.
After finding 50 entries. Only "unique" creatures are taken into account (normal & elite version counting as one) He will award you and he will tell you about his real name.
1500 Exp and RELIC: Janbiyah, a dagger.GTT