glints challenge

i read about glints challenge
how do i get this please?

Consular Brand Oakencask in Central Transfer Chamber (Eye of the North). To get there you must complete "Destructions Depths," which follows the completion of the Vanguard, Norn, and Asuran quest lines.

But... you can't really farm destroyer cores from that challenge anymore due to them fixing inner fire to actually heal the destroyers.

There are still a couple of builds that work in there. E/Me is still a viable destroyer farm.