This build is not playing to Ornn's strengths as a teamfight player, but rather forcing him into the opposite of what he does best(still more viable than AP Ornn ¯\_(ツ)_/¯ ). The only redeeming quality is that your team (as long as the comp is good enough, or you get an early lead, or are just better) will be able to 4v5 with a constant threat of you ending the game and an Ornn item buff. There is also strong 1v1 potential kills and outplays, but keep in mind that you have little going for you in a team fight. Make sure to check notes as most of the explanation for the choices are in there. I am not devoting too much time or effort into proving this build's identity as Season 12 is just around the corner, but once this gets updated I do plan on giving statistics and showing the numbers behind the slaughter.