The strongest form of magic.

Darkness blacker than black and darker than dark,
I beseech thee, combine with my deep crimson.
The time of awakening cometh.
Justice, fallen upon the infallible boundary,
appear now as an intangible distortions!
I desire for my torrent of power a destructive force:
a destructive force without equal!
Return all creation to cinders,
and come frome the abyss!

https://gifimage.net/wp-content/uploads/2017/08/megumin-explosion-gif-5.gif
https://vignette.wikia.nocookie.net/konosuba/images/d/d4/Megumin%27s_Explosion.gif