Fairy Tail Episode 140: Enter the Neo-Oracion Seis!
Episode 140 of 175 of Fairy Tail, aired July 20, 2012, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Just when it looks Fairy Tail is about to have a climactic fight with Byro over the Infinity Clock, Oracion Seis returns, with upgraded powers and a desire to make the ominous clock their own!