http://lineage.pmfun.com/list/quest/archmage
8. Go to the Valley of Saints, second Tablet Of Vision . It's surrounded by quest monsters (Guardian of Forbidden Knowledge, big female angels). Click on Tablet of Vision #2 and you're told to kill *all* of the Guardians of Forbidden Knowledge. When you kill them you will get Stone of Commune. Communicate with the tablet again and get Resonance Amulet - 2
and when yo speak with tablet it says - someone nearby...try again later. it means that somebody is killing q monters, but nobody there, waiting allrdy 1h nothing happening.
time has passed nothing happening