Personally, I voted for Anomaly, Ozymandias, and my own (Suzaku). Suzaku is the only Cremation deck to take advantage of the off-element quanta provided by Cremation and is slim and carefully crafted to be perfectly played by the AI -- which many of these decks are not -- while also not being too powerful to be defeated by a normal player.
Anomaly is just covered in control, making it hard to get any strategy established, and would also be well-played by the AI, but doesn't have any truly killer offense, so a simple protected Diamond Shield is game over. I like that.
Ozymandias is kind of a blend between Suzaku and Anomaly, actually, with massive control but also using off-element cards to their best effect. I'm not familiar with Scarab swarms, having never playtested with Pharaoh at all nor played with Scarabs ever, but I can see the potential. LIke XDBD said, it comes down to "will a Druid mutate this" -- I'm assuming it will, so I'm assuming this deck is golden.