If you like field nukes, you will love this deck. It's about as field-nukey as field nuking can get. The original Demise is not once per turn, so you can keep blowing the field up if your opponents has floaters, as long as you have the life points. Big Demise is a nuke with no cost most of the time. Ruin is okay, she's mainly there for OTKing, especially the big one. It is a ritual deck, so it's about as consistent as any deck can get (that's a joke, by the way. Rituals have never been consistent without being broken, look at Gishki and Nekroz). The two normal monsters are there for Advanced Ritual Art. Since there's no real way to summon them, I just picked two that I like. There's no extra deck, because this deck doesn't really keep up enough field presence to have one. It's an absolute blast to play, because who doesn't like blowing up a field your opponent spent five minutes making?