Fairy Tail Episode 66: The Power of Feelings
Episode 66 of 175 of Fairy Tail, aired February 13, 2011, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Having told Wendy to destroy the sixth Lacrima in his place, Jellal appears at the first Lacrima and gives Natsu the "Flame of Guilt". Natsu consumes the flame and enters Dragon Force for his fight against Zero and they power up for the final blow. Meanwhile, everyone reaches their respective destinations and wait for the right moment to strike.