Could Skarner now be guarding an entrance to the Void?
I AM NOT SAYING THAT CREATURE WAS SKARNER
So as far as we know, the Brackern was retconed out of existence.
What do we know about him now? He's purple, "Merciless" and he guards a "realm deep beneath the Shuriman wastes."
Now here's where my speculation comes in.
I theorize that Skarner is guarding the entrance to the Void dimension where all the void monsters originate. His purple coloring, monster features, and new description would work very well for a "Guardian" Void creature.
From the New champion teaser we can see a Void monster lurking in the sands of Shurima (ITS FEMALE BTW), while this doesn't concretely say anything, I think it suggests that Icathia(If it even still exists/which we know to be a desert region) is somewhere very close to Shurima.
What if Icathia is below Shurima and is the place of entrance to the void? What if the portal to the void opened by Xeraths Botched Ascension? What if Skarner "Misses his kind" whom are of the void?
Just some thoughts I wanted to throw out there.