Artifact Name and Stats:
Gem of Lost Memories is a level 30 artifact useable by all classes. It's stats vary by what version you activate it as. The following is but one, the Caster version.

• Level 0: Constitution +10, Hits +24 and Matter resist +4%.
• Level 2: Body resist +4%.
• Level 4: All magic skills +2.
• Level 5: Recovery.
• Level 7: Bonus to spell damage +2%.
• Level 9: Bonus to spell range +2%.
• Level 10: Banish Fear.

Starting NPC and Location:
N/A

Artifact Guardian and Location:

Night Terror: Oceanus Hesperos, Night Terror's Island, /Loc = 5,100 / 33,800

Instructions:
Step 1: Kill Night Terror.
Step 2: Kill all the Night Terror's copies.

Strategy and Hints:

Like Peridas, the Night Terror is a very rare spawn and as the name implies, it only spawns at night. It spawns just in front of the most central pillar on the island. I have noticed that sometimes the harpys that spawn there will vanish as Night Terror appears.

It has been reported to take as little as a minute or up to 24 real time hours for Night Terror to respawn. Try to do something productive while you camp. If you just stare at your computer monitor while you wait, you'll make yourself nutz!

Night Terror appears as a turbaned Dao Janni and 'con's green to a 50th. A solo 50th player can defeat Night Terror easily. In combat, Night Terror will use stuns on it's attackers. Also like Peridas, Night Terror must be killed several times to be defeated. When the first Night Terror dies, two more slightly lesser strength versions will appear, and each of those will spawn two slightly lesser versions of them selves as well.

Night Terror may drop other items of value.

Scrolls:
Gem of Lost Memories scrolls drop from the Harpys and Stone Statues in and around Oceanus Hesperos.