Fairy Tail (2014) Episode 19 →

The dragon Zirconis uses his unique magic to literally strip the "dignity" (clothing) off the soldiers and wizards, including Lucy and Wendy, creating chaotic and comedic scenes amidst the serious war.

As the fight progresses, Natsu eventually finds a way to turn the tide by interacting with the fire dragon, Atlas Flame, though this climax primarily develops in the following episode. Important Note on Episode Numbering

Titled "Changeling," this is a popular "filler" episode where the guild members accidentally switch bodies due to an ancient spell. Fairy Tail (2014) Episode 19

Titled "Zirconis' Magic," this is a "canon" episode (Episode 194 overall) that is part of the major Eclipse Gate storyline.

In the context of the series (which begins at episode 176 of the overall series), the 19th episode—or Episode 194 overall —is titled "Zirconis' Magic" . Episode Overview: "Zirconis' Magic" Original Air Date: August 9, 2014 Arc: Grand Magic Games Arc / Eclipse Gate Arc The dragon Zirconis uses his unique magic to

Natsu is still locked in a desperate battle against Future Rogue, who is controlling the dragons to facilitate his plan for world domination.

As the battle against the seven dragons from the Eclipse gate intensifies, the Jade Dragon, Zirconis , unleashes a humiliating and bizarre spell that strips people of their clothes. Meanwhile, Natsu continues his high-stakes struggle against Future Rogue . Key Events Titled "Zirconis' Magic," this is a "canon" episode

There is often confusion between the 2014 series and the original 2009 series.