Obtained from the quest given by Izaro, the stable keeper in Heidel.
http://bdocodex.com/cn/quest/2001/49/

Also need 10 amity.

This quest you can access on the 3rd Crossroad. If I good remember, you will get first crossroad, I chose 3rd (the last one), then after some quest line, you will get another crossroad, I chose also 3rd, and not sure, I think you will get again next crossroad selection, so again select 3rd, the last option.
Just still choose 3rd. Good luck

Heidel'de Ahır Bekçisi NPC Izaro ile 10 puan dostluk yapın. "Ah, Melissam" görevini alın, görev esnasında bilgiyi elde edeceksiniz. (3 Enerji)