What Would Be the Most Powerful Energy Attack?

[Velvette]

I happened to think about this after the Omega Shenron v SS4 Gogeta battle popped into my suggestions and I was like "Eh, why not watch it". If anyone of you don't remember during the fight Gogeta uses a move called Big Bang Kamehameha, which combined Vegeta's most powerful attack with Goku's. That got me to thinking What would be the most powerful energy attack, personally I think it would be some sort of high-level end all be all Big Bang Kamehameha used by Gogeta in some sort of final form. I would like to know what you all think and even leave suggestions as I am slowly getting back into Dragon Ball franchise as a whole again.

 

[Beerus]

I feel like it would be a destruction move. Something that is designed to destroy everything around it. If you would count this, I would say Vegeta's self-destruction move "Final Explosion" would be at the top. Especially now with how strong he has become.

 

[India Actual]

I think this is probably the strongest attack to date shown in the anime or a canon movie. The Ultimate or Full-Force Kamehameha

 

[Yoshi]

Going by the power scaling logic that Dragon Ball Z follows, the Super Kamehameha that Goku and Gohan use in the Cell Games would have to be more powerful than Final Flash.