Looking for a particular background art

Yeah, I have. Thing is, that image is literally the only copy of the internet.

It's a background image for an article on nexus.leagueoflegends.com (scroll down to the Total Recall article). I had to get the image url by inspecting the page through the browser console.

I am pretty sure only Riot has the image, and I was hoping a kind Riot is willing to post a larger version of it.