And sure enough the question of the location of the Octychs has come up. So as I gather, these are the locations of Octychs we know about:
** spoiler omitted **
Now that's interesting: I wasn't aware that
I just checked the original manuscript and it's not mentioned in there (nor is the word "triangle"), so I wonder if this was added to the
Some quick research found an octych mentioned in the possession of the ruling house of the Duchy of Urnst, as discovered in their vaults by the Seer of Unrst (OJ23, p. 24). He appropriated the octych, then lost it in the nearby ruins of Inverness. That summarizes the octych's presence in OJ23, and there's not one found in the Warlock's Walk trials themselves, so far as I can tell.
So, it looks like the known locations are still just:
1. Castle Greyhawk.
2. Dragotha's Lair
3. Ghost Tower of Inverness
4. One possibly in Mordenkainen's possession?