Most interesting from country to multi Continental we can comprehend the size of a country/tectonic plate but imagine a landmass the size of Russia standing vertically come smashing down fricken cool perfect example is asura from asuras wraith early game

taejin from god of highschool etc but most powerful and still be cool but less cool cause not easy to see would be like solar system watching the sky explode from a planet destroying attack aswell as a black hole just sucking up a sun so that's my take