It's Wind-Up Rat, Josh, and yes, he should be using it. if he doesn't, then he misses out on a bunch of combo possibilities. Anyway, drop all three Snails and add in WU Rabbit (x2) and a Tour Bus. I prefer the grave disruption over the creature pop that Assailant offers. I would also remove a single MST and BoM to add in Instant Fusion so you can increase the consistency of combos, or make your combos even bigger. Furthermore, I would remove both Mirror Forces or Torrential Tributes (whichever you prefer) for Solemn Judgment and a number of copies of CED. If you don't want to max out on CED and Judgment by removing all four copies between these two cards, remove BTH instead. CED does the exact same job but better.