So, what's one of the most broken cards if it had stealth? Would the real Alarm-o-Bot please stand up? I repeat, would the real Alarm-o-Bot please stand up?
The win condition for this deck is to draw Alarm-o-Bot early and cheat out your big stuff. The Coldlight Oracles and other draw engine cards are there to help replenish your hand with big minions if you run low. Ideally, your enemy won't last that long. Also, holding on to board clear is essential, but you want to mulligan for Alarm-o-Bot aggressively. The mulligan, essentially, is a fine balance between getting what you need to win and opening yourself up to getting zerged if you fail. If all else fails, keep healing and wait for a board clear to reset things. With the amount of control you have elsewhere in the deck (Excavated Evil, Holy Nova, Shadow Word: Pain, Shadow Word: Death, and Entomb), it should be easy to keep in control of the board at all times. The only real weakness to the deck is a lack of healing cards, but your board control and minion cheating should more than make up for that. Happy playing, and let me know what you think of the deck!
Edit: this deck is currently 9-3 with the following stats:
Druid 1-1
Hunter: 2-0
Mage: 0-1
Paladin: 3-0
Priest: 1-0
Rogue: 2-0
Shaman: 0-1
Warlock: 0-0
Warrior: 0-0
Losses with this deck have only happened against aggro decks where I couldn't get Alarm-o-Bot in hand within the first half the deck.
Best moments with this deck:
Dealing 27 damage to face on turn 5. 7-damage Holy Nova from Malygos spell damage, 12/12 Coldlight Oracle (buffed by two Nightmares), and a total of 8 damage from Ysera and Malygos.
Shadow Towers: Alarming Priest