After Drillk's memory returned, he told me how to obtain the keystone. It's locked away in the Temple of Sul.
- Break the Ward Blocking the Temple of Sul
- Enter the Temple of Sul
- Search the Temple of Sul
- Hints: Solve the Puzzle
- Find the Keystone
- Talk to Morilye
- Return to Drillk
- Hints: Ext the Temple of Sul
- Make do without the keystone
- Sacrifice and your people will be remembered
- Talk to Lodyna
To enter the temple, select the option "Betrux". To solve the puzzle examine the Mundus pictures on the nearby wall, the solution is 1) The Serpent, 2) Tower, 3) Thief, 4) The Lover
- Completes the Zuuk objective.