The stone tablet is an item found in Lamistard's Tunnels during The Curse of Arrav. Lamistard was a Mahjarrat who died in the fourth age, and tunneled to get closer to the mahjarrat's ritual stone before being caught and sacrificed in the ritual.
If lost after completing the quest, it can be found in its original place again.
The Journal of Lamistard. It is imperative I get as close to the Ritual stone as I can this time. For too many Rituals now the same few have gained much power while the rest of us have stayed on the outskirts and remained weaker. If only I could get close maybe I'd become a force in the next battle.
The appearance of the stone tablet when read.
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