I looked through the threads for the community recommended decks, and I noticed this deck needed a thread. After looking, I couldn't find it, so I created this thread. (If someone does manage to fish it out, I blame the forum switch for confounding things.)
This deck is entirely Sevs'. I am here just to provide commentary.
The deck:
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5fc 5fc 6rl 77e 77e 77e 7dg 7dg 7dg 7dg 7dg 7dg 7dm 7dm 7dp 7dp 7dp 7dp 7dp 7dp 7dq 7dq 7dq 7dq 7dq 7dq 7ds 7ds 7ds 7du 8pm
(Original had a crimson dragon in place of the Serpah. The Serpah is slightly cheaper and has a protection skill if it survives for 1 turn, and the dragon's 3 HP doesn't really matter against spells that almost always do more damage.)
Now you might be thinking, "Why try go through Arena with a deck without defense? Wouldn't it be blasted to pieces?" Well, even if it has a lower winrate than other decks, it gets through games very quickly, so any small profit is multiplied by the number of games this deck goes through. And it does win. People who put decks up sometimes decide to forsake all protection and CC for defense breaking, thinking 50 extra HP will do a lot to defend it, so you get easy wins every so often. More than a few times, you can get a first-turn win against an old deck. And even with defense in arena decks, you can get a win more quickly than the deck can put up a defense.
And I repeat, this is Sevs' deck, not mine. Don't credit me for it or accuse me of plagiarism.