In a rematch against the God of Destruction Beerus, employing this technique might be Goku's key to securing victory.
Despite attaining immense strength through the power of gods and the Ultra Instinct, Goku finds himself facing adversaries of godly caliber, such as Beerus, the God of Destruction from Universe 7. However, the Saiyan warrior has yet to seize a triumph against such formidable opponents.

A potential game-changer lies in a technique known to few – a technique revealed in the spin-off manga 'Super Dragon Ball Heroes: Ultra God Mission!!!!'. Interestingly, this technique has the potential to give Goku the edge needed to overcome Beerus.
It's worth noting that the Super Dragon Ball Heroes series might not have gained universal fan adoration, resulting in limited awareness of this technique among the fandom.
The technique that could tip the scales in Goku's favor against Beerus is named the 'Beyond God Instant Kamehameha.' This move combines the iconic Kamehameha attack with Goku's previously used Instant Transmission during the battle against Cell.
In Super Dragon Ball Heroes, Goku has mastered this technique, seamlessly teleporting multiple times while unleashing a lightning-fast Kamehameha, creating numerous illusions around his opponent.

The Beyond God Instant Kamehameha is a formidable technique that allows Goku to move at an extraordinary speed, surpassing the constraints of time. He utilized this ability to confront Aeos, the primary antagonist in the Ultra God Mission storyline.
Aeos, a goddess with time-manipulating powers, found herself overwhelmed by Goku's rapid attacks. Combining Kamehameha with instant teleportation, Goku crafted a technique capable of defeating foes far beyond his power level.

In Dragon Ball Super, Goku faced a monumental challenge when battling Beerus, who far surpassed his power level. In their initial clash, Goku fell short. However, now he has the opportunity to defeat this formidable opponent using a special technique that merges Kamehameha with instant teleportation – the Beyond God Instant Kamehameha.
Although this technique only appears in the Super Dragon Ball Heroes spin-off manga, if it proves potent enough to vanquish Aeos, a goddess with time-manipulating abilities, then perhaps it also gives Goku a chance to triumph over the God of Destruction from Universe 7.