Idea source for mordekaisers nee ult

This is directed at the champion design team. A while ago, I made a post on reddit detailing a new champion concept. The new champions ultimate was very similar to mordekaisers new ultimate. My champion basically teleported another player to an arena with him for 7 seconds where they fought 1v1, stole stats, and gained stats for winning the 1v1. I am curious if anybody saw this post on reddit, and if it was the inspirtation for mordekaisers ultimate?