Board Thread:Off Topic/@comment-26064215-20150127201253/@comment-25555436-20150222034103

Megido, the Almighty spells from Shin Megami Tensei. Megido, Megidola, Megidolaon, and some others. With Almighty, it means "Damn strong spell that ignores anything element-related". As such, it doesn't matter if you can resist/Null/Drain/Repel everything, Almighty still hits, and hurts. It can be evaded though, and that's pretty much the only way to save yourself. It usually cost a damn lot of MP (Megidolaon costs like 105+ normally, in games where the very max is 999, and only if you take your sweet time grinding, and MP-recovery items are rather rare).

The name, if I remember right, comes from Megiddo, or Mount Megiddo, where supposedly a very huge flame erupted when God descended from the heavens there. I think it was also going to be lighted when the Apocalypse started. In other words, it comes from Christianity, or one of it's "ancestors".

As for how that can be transfered to RWBY, I got 2 ways, only the 1st one seems possible though.

1-Very goddamn powerful Fire Dust with potentially-catastrophic capabilities.

2-Light+Darkness. Both elements combine, and Megido is formed because while they physically still fuse, elementally they null each other, and as such what we get is...a Non-Elemental Dust. While this one is much more like SMT's Megido spells, it just seems less...closer to canon, know what I mean?