Skarner's kind was used for Hextech

'Camille's family gained most of its wealth through a rare crystal harvested from a creature native to the sands of a distant valley. These first hex-crystals, or “first crystals,” contained power normally reserved to those born with innate magical ability.'

'The creatures Elicia Ferros found, the Brackern, were not an unending resource...'

And in Skarner's story (http://na.leagueoflegends.com/en/featured/shurima/skarner ), it talks about how Skarner is "part of the ancient Brackern race", and how humans had "had discovered the dormant creatures and were prying crystals from crystalline flesh."

wow hextech has a dark origin

edit: wait then what is the new client running on o_O