Update from the latest stream: I think we're onto something!
Taking a longer look at the image posted of the ???? item. I believe I know which quest and where in the quest the item is acquired.
Assuming that cordo didn't randomly spawn the item in the quest, the ground around where that screen shot is taken appears to be from Vecna Denied. Specifically from the Dragon Optional.
Additional evidence also stems from the twitter post with the rest shrines being something important in that quest. The optional being red to denote something special (though this may just be a difficulty thing). The small hint that it may be guarding something (which it certainly seems it is). Also, its mind controlled. Leaving it every open to a potential way to alternatively deal with the fight.
Some the questions we're left with...
1. How do we get the second chest to spawn? (expecting a non-player based action to do this. ie not spells or abilities or class options. Something like the altar and/or the beams at the end fight or another item, /say or some other command?)
2. What other optionals have a special color? (i remember seeing some, but had trouble remembering last night).
3. Is this the beginning or the middle? (cordo mentioned that while there are other hints, we may need to be psychic to actually figure it out. Cryptic hint at the mindflayers or basically saying its technically possible, but improbable without more hints coming from social media.)
4. What more can we do with the altar? What would be a reflection of ourselves gamewise?
Also... some additional things about the ???? item to clarify.
1. Its not Lich Dust. There were some claims about players figuring out the name by searching their inventory to find a bugged item called lich dust. Lich Dust is an old Mabar event item that no longer is obtainable. A number of players have it from back in the day and its stuck in their inventory.
2. Its appears to be used for crafting. Non gear based items and interactable have this border. Adding in the second crafting device indicated on the morgrave map... suggesting this leads to a special crafting device. This doesn't mean more crafting options necessarily, it could just be a way to upgrade the ???? item or have the ???? item upgrade something else to be used later to unlock something in the raid or elsewhere.
Testing:
- Tried taking the items from the altar room.
--- tried a bunch of stuff with the altar too, nothing special yet. Including lilac petals, spending the buffs and having debuff from the vol room.
- Tried different orders of visiting the dragon and completing the quest
- Looked all around the map. so know about the stuff behind the mindflayer room, above the castle and
- Tried (greater) dispel/break enchantment/disjunction
- Hoping its not kill at the things first cause a lot of stuff is inside walls.
- Cause of the weird spell targeting, you can kill the dragon without opening the door, didn't help.