Notes & Combos
Why 57 cards? Because if they resolve Droll, you lose, unless you run Coelacanth. Problem is, the big fish comes with some bricks. The idea was that you should play around 50 cards in Mermail because Coel was worth it, but then I struggled with getting Roached far more often and searched for a better way. That better way was Small World.
With Small World, you have the opportunity of searching Prince through various hand trap combos and extra engine cards. For example, using SW on Nib gets you to Prince by bridging through Driver, and Driver can become Roach, Teus, or even a Kaiju. Even more notably, there are various combinations that allow you to search Droll or Ash, which increases the likelihood that you can play through the draw HTs. Much of the additional slots over 50 can be explained through their synergy with Small World.
Since you get the chance to play under Droll, it is correct to Droll yourself after you have searched Rhine, since this becomes full combo off just summoning Coelacanth.
Replays
021-913-848
There are some replays with this list on my account, should you all be interested. They'll be up at least until Mimighoul drops.