Hearthpwn

Abuse Archmage Arugals and Dollmaster Dorians synergy with Book of Specters and Aluneth, and Murlocs love of card draw.

Don't cast Book of Specters just because, if you have other things to play. It is best spent comboing with Curio Collector, Archmage Arugal or Dollmaster Dorian. There are only 2 other spells, max (1 other book and 1 Pyroblast) so you should almost always get 3 cards from it.

Archmage Arugal and Book of Specters is an extremely powerful turn 4 combo, almost always netting you 4-6 minions in your hand. 

Turn 6 Aluneth into turn 7 Curio Collector+Book of Specters is a very powerful set of turns, putting a 10/10 on the board and giving you 5-6 cards. Also a powerful turn with Dollmaster Dorian to flood the board.

 Aluneth doesn't necessarily have to be played on curve, if you have other good plays it means you have a hand.

Army of the Dead (the right one, not this one, how do I get the right one?) from The Lich King can single-handedly win the game for you. It doesn't count as a draw so it won't synergize with Dollmaster Dorian or Archmage Arugal.

Replacements

Primalfin Lookout can replace Nightmare Amalgams.

The Lich King can be replaced by either Arfus or a Loot Hoarder.

Either Dollmaster Dorian or Archmage Arugal can be replaced by a second Loot Hoarder, having neither means adding an Arcane Intellect, but not having either means you probably shouldn't play this deck...

Everything else is either cheap enough to get easily, or kind of mandatory for this deck to work.