'Dragon Ball Super' episode 66 spoilers: Vegito to emerge with new powerful technique?

How does a Saiyan fight an adversary that has extended his powers to no end? Goku has a simple answer that may finally put an end to the devious plans of the immortal Zamasu.
The preview for the next episode of the popular Japanese anime "Dragon Ball Super" has made fans excited for the upcoming installment, which promises a climactic turn in the battle between good and evil. The appearance of one unmistakably remarkable character finally confirmed what has long been speculated since the seemingly never-ending battle with Zamasu began.
But can Vegito, the potara fusion form of Goku and Vegeta, put an end to Zamasu's reign of terror?
The episode titled, "The Climactic Battle! The Miraculous Power of a Relentless Warrior!" hints on yet another action-packed episode in which Vegito will reportedly show off his new technique, the Kame Hame Ha Final, which is a combination of Goku and Vegeta's finishing moves, the Kame Hame Ha and the Final Flash respectively.
A plot summary cited by The Bitbag mentioned a grave turnaround in Zamasu's supposed immortality after Goku succeeds in breaking his ring of light. There have also been speculations that Goku will be using his well-renowned Kaioken attack once again. This attack may be extremely powerful, but it could also take a huge toll on Goku's body.
But whatever technique Goku uses to bring Zamasu's power levels down significantly seems to work in his favor since the preview showed a less confident Zamasu seemingly running for his life. What could have happened to cause him this much fear? Has Goku somehow managed to surpass the supposedly unlimited levels of Zamasu's immortality?
One huge fight is coming and a satisfying end finally seems to be within the Saiyans' reach. Will "Dragon Ball Super" episode 66 be the end of Merged Zamasu? How will Vegito manage such a miraculous victory, and how will this fight and its eventual conclusion affect Future Trunks' world?
The nnext episode of "Dragon Ball Super" airs on Sunday, Nov. 13, at 9 a.m. JST on Fuji TV.