Based on some other subs, Iron Fist might be better off at about 17, though I’m not really too concerned with it. It’s just a combination of speed and firepower we haven’t seen at the same time on a sub, and ships like the Nautilus and Mercury have proven to not be overpriced (if anything, underpriced in huge games).
Cannons for the Skrall’s Hand? Reminds me of the Forward.
Cryoshell seems reasonably “tame” compared to some of the other “wave” game pieces you’ve released, but I wouldn’t be surprised if it needed to be more like 20 points.
I think Monk’s Revenge (not sure if the name should look like that) could be 8 points. Without the Mercenary keyword she’d be a decent gold runner, but with it, she’s not going to excel at anything. It’s a fun but oddball package, and would be much more intriguing at a single digit cost.