This deck is about control through positioning. You drag enemy units where you want them, punish bad placement, and slowly drown the board. Most wins come from forcing your opponent into moves that look safe and turn out to be fatal.

There are a lot of fun combos to play in this deck, here's a couple so you can get some ideas:

Abaddon Succubus + Nelly Longarms - Setup Nelly to the side preferably so that the opponent does not feel immediately threatened by her projectile then as you drop a succubus you can pull the minion in and sink it with nelly.

Unland Eel + Dredge - Most people do not expect dredge so feel safe if unland eel is submerged, the skeleton tokens from dredge are also great swap targets so you can dredge swap + eel drown targets.

A lot of the uniques in this deck are mainly there because they are fun to use, Lilith is one of the best cards in the game. Captain Baldassare is a fun card and so is Evil Twin, both can be replaced though they are not critical to the deck. I like Book of the Dead to bring back threats that your opponent has struggled to remove.

I like Seer because this deck really shines when its combos come together. Her ability helps smooth out draws and find the pieces you need and the river sites support that consistency even further.