The goal of the deck is simple, big number hit hard.
You accomplish this through cards like Lightning Storm, Raigeki, HFD, and IKS.
Your best and most important card is B.E.F. Zelos, as it enables the entire deck to function. Your main ways of OTKing are through cards like limiter removal and getting big kaijus like jizikiru on board. If you don't manage to OTK, all is still well, the deck has an excellent grind, albeit without much interaction. Turns out its hard to out cards that get replaced after destruction and cannot be targeted or destroyed by card effects.
Note: Extra is pretty flexible, most of it never comes up, you may want to add rank 9s and replace the 7s with 6s. The only "mandatory" cards in the ED are probably the Cydra cards, but even those can be replaced.