What episode is the complete transformation of Elsa, the tail of a leprechaun?

1, Naz and Elsa agreed in "The Goblin's Tail" that once the iron forest was solved, they would have a good fight. But at the moment of confrontation, the angel of the Senate came to arrest Elsa, and Elsa completed a full set of transformation.

2. The Goblin's Tail is a juvenile cartoon created by Japanese cartoonist Mashima Hiro. Serialized in Toastmasters Comic Magazine Weekly Youth Magazine. This work tells a series of bloody stories about Lucy, Naz, Habib, Gray, Alusa and many of their partners as members of the "fairy tail" of the caring association in this magical world.