A couple of notes on the deck....... I've found that you only need water extenders after your initial normal summon, along with the rank 4 monsters being bonkers better than linking off into a link 4. Because of that, I took out sleepy maiden for more level 4 extenders.
I'm also not playing Reef...... but I want to. I'm not sure what the best card in the extra is though. Kragen spawn may be a really good card, but idk. It allows me to have more follow up if my board is broken.
I'm going to experiment with maiden in the future (probably), along with the other new shark card that comes back from the grave. Crystal shark is the perfect discard for the new link 3, so that may go in over a sea nettle, but it also has the potential of bricking a hand if you don't have another level 5 or 4 that can be left over at the end of your combo.
Lastly, I've placed wave at 1. 3 is too much, but I can't tell if I want to play 2 when it is so easy to search.
LMK what y'all think of the deck. I'd be happy to have any feedback!