Complex sentence: The club was established in 2012, after the merger of AO Arta, Aetos Diasello and Omonoia Petra, and is currently competing in the 3rd tier of Greek football, the Football League 2.
Split into simpler sentences: The club was founded in 2012 after the merger of AO Arta, Aetos Diasello and Omonoia Petra. They are currently competing in the 3rd tier of Greek football, the Football League 2.