I was thinking Sundials, Sanctuaries, SoGs, and Heals in a 32-card stall could do it. Of course, good luck beating any of the normal 7 gods with that, but then, that's kind of the point, isn't it?
I think extra points should be given to players who join the game earlier
those joined later have the advantage of seeing all the FG decks already, and can make a deck to slay all of them, while those joining earlier only has one god to work with, and can only guess for the others, it's unfair if you take a second to think about it.