Where can I get the missing piece of the cube?

Question

Since there is a next stage in opticording quest some people saw in test server this item:
 

01:45 You see the missing piece of the cube.

It weighs 1.00 oz.

It's black and it's missing.

but where can you get it?

Answer 1

I found it in Edron here you go down above a graveyard:

And then click on the tomb

Then the tomb opens and you get the cube! :D

Note: The missing part of the cube can only be found after defeating The Last Planegazer.

If you did not kill him before trying to open the grave, you will not find anything (The message says there's still something hidden, though).

This is a clue for the next step on this mysterious quest

Next clue appears on cobra bastion , some messages appears when you are on that zone and then as an Ilussion it appears a complete cube for 1 second.

Comments

Thanks for the info man , I just edited the answer with your new info , thanks!

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I know this comment is a couple of years old, but that is not the case. You can collect the missing part of the cube straight after completing the puzzle in Krailos.

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And you can forge the supreme cube right after the puzzle in krailos too… (if you already have the missing cube, the cube and the completed opticord)