This is my Deep deck that I have been optimizing for some time now. The addition of Slaughter Docks allows for a Sea Monster on the board before Nautilus, without having to spend its mana cost. Keep the Landmark on your opening hand unless you are facing Aggo. Here are a few changes that you can do in the deck if youd don't like some of the cards:
You can remove:
- Thorny Toad
- Vile Feast
You can add:
- Unspeakable Horror
- Grasp of the Undying
- Riptide
FAQ: Why no Lure of the Depths?
> Lure is a great card agains greedy Control/Late-game decks, the problem is if you face any Aggo/Burn match-up, you just lose too much momentum and you will probably be dead before you can play any Sea Mosters discounted by this card.
3.85
Shard Cost: 
32,400
16
24
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