In the Shimmering Coast, you came across an undead that didn’t attack you. Instead, he offered you a mission. Rouj Zabat believed there could be a hoard of gems from the long-dead Nagasa hidden somewhere in the desert outside of Maj'Elka and asked you to investigate.
Your search led you to an enormous scorpion covered in gems crackling with magic energy, likely the remains of the Nagasa gem hoard.
Upon arriving at the meeting place in Maj'Elka, you found that assassins had attacked Rouj. After dispatching them, you shared with Rouj your findings, giving him one last gift of knowledge before he faced his true death.