This miracle rogue "variant" does not run QAs nor an Edwin. I felt that those cards were too vulnerable to silences and removal. Playing this deck requires you to control the board early and build up tempo, at least enough tempo for you to be able to deal enough damage to the enemy to get them within one-shot combo range. (There are plenty of combos in this deck)
This deck runs Harvest Golem x2 and Chillwind Yeti x2 for their great value and board presence. SI:7 Agent is very helpful in clearing the board of minions with his battlecry and great 3/3 stats. This deck can sometimes catch your opponent offguard, because you're playing to gain board control early in the game with these minions which is something that people don't expect to see in a miracle rogue deck, when you drop that Auctioneer and Conceal him you're almost guaranteed a "wtf?" from your opponent.
The Assassinate card in this deck might seem counter-productive to a deck that relies on low-cost spells, but sometimes your opponent will be able to play a huge threat on the field and needs your immediate attention (i.e. Ragnaros), it's your last resort card.
How to play:
Establish board control with SI:7 Agent, Harvest Golem, and Chillwind Yeti. Those cards often trade 2-for-1. If left unchecked, they'll be able to dish out damage to your opponent's face. Sometimes when I have no choice I drop a Raging Worgen on turn 3+, this card rarely lasts more than a turn because opponents are afraid of the enrage effect, this guy packs a ton of damage given the right situation. Pay 3 mana, your opponent spends a removal.
- Use your spells wisely before you've dropped a Gadgetzan Auctioneer.
- Have a Wicked Knife equipped, sometimes at turn 2 I equip it and just save it instead of attacking the face. Saving this will be helpful later on when you drop an Auctioneer, you can use Deadly Poison immediately. However if you see a situation to make a good trade with your Knife, don't be afraid to use it.
Hustle while you wait to get Gadgetzan Auctioneer + Conceal in your hand, stay alive, have board presence, and get your opponent into kill range. Once you lay down your Auctioneer, you can freely use your spells, your goal is to draw Leeroy and your Raging Worgen for the finisher. If you haven't any good cards in hand, use Deadly Poison first to get a draw.
If you have the Coin, you can drop your Auctioneer at T5, use Coin and Conceal.
Finishers: (If you already have a Wicked Knife with Deadly Poison equipped, that's +3 damage to the combo)
6 mana: Leeroy + Cold Blood x2 = 14 damage, Leeroy + Shadowstep = 12 damage
7 mana: Leeroy + Shadowstep + Cold Blood = 16 damage
8 mana: Leeroy + Eviscerate x2 = 14 damage, Leeroy + Cold Blood x2 + Eviscerate = 18 damage, Leeroy + Shadowstep + Cold Blood x2 = 20 damage
Those are just some of the Leeroy finishers you can do with this deck, you might not always get to draw certain cards so it's great that you can mix and match with Leeroy.
For your Raging Worgen, use Shiv to activate the enrage effect, and buff him with Cold Blood/s. Use Conceal after dropping him because he will most likely eat up a removal or get traded. Sometimes I drop Raging Worgen on turn 3+ on purpose as bait. If your opponent ignores him, capitalize on the situation and use Shiv on him if you have it in hand.