Ixil's Nail can be used by Cespenar, who requires 5,000 
and Ixil's Spike (dagger) to create Ixil's Spike (spear).
Location[]
Take the left door on the fifth level of Watcher's Keep, search the pool for Ixil's Nail.
Description[]
| “ | For many generations this magical shaft has been separated from Ixil's Spike, the enchanted head of the legendary spear. However, even incomplete, this artifact is still a weapon of great power. | ” |