Dragon Ball Super Episode 66 -

The episode introduced a major piece of lore: Potara fusion is only permanent for Supreme Kais . For mortals, the fusion has a one-hour time limit .

Realizing that Zamasu's mortal half (Goku Black) is preventing his immortal half from healing properly, Goku and Vegeta decide to use the for a final gambit. They fuse into Vegito , who immediately transforms into Super Saiyan Blue to engage in a high-speed battle with the mutated Zamasu. Key Events & Revelations Dragon Ball Super Episode 66

Witness the intense showdown as Vegito Blue battles Merged Zamasu in this high-definition clip: The episode introduced a major piece of lore:

, titled "Showdown! The Miraculous Power of Unyielding Warriors" (or "Decisive Battle!"), is widely regarded as one of the most high-stakes and visually impressive episodes in the series. It first aired in Japan on November 13, 2016 , and serves as the penultimate climax of the Future Trunks Arc. Plot Summary They fuse into Vegito , who immediately transforms

Future Trunks takes the final stand. Channelling the hopes and energy of the remaining survivors into a "Spirit Bomb-like" energy, he empowers his broken blade and slices Merged Zamasu in half .