First of all, not my idea

This deck is inspired by reading  "Holy Sh...adow Priest" by  angelcrest. When I first read about the paragraph From Zero To Hero, I immediately think, "YES! This is the real burst power of Priest!!!". Thanks for the great idea!

How it works

Divine Spirit : Double a minion's Health.
Crazed Alchemist : Battlecry: Swap the Attack and Health of a minion.

In short, DOUBLE DAAAAMAGE.

You don't get a card double a minion's Attack, but you actually DO have a card double a minion's Health. SO, you just need a Crazed Alchemist to help you do the work!

Scenarios: mana needed from Low to High

Scenario 1 - Windfury + Crazed Spirit = 28 Damage

1. you place a Thrallmar Farseer (3), just for its windfury
   ......wait for next turn.......
2. Divine Spirit make it a 2/6 with windfury
3. Crazed Alchemist make it a 6/2 with windfury
4. ATTACK! 6 x 2 = 12 damage in a round!! (oh where is the 28??, here we go)

** Adding a Power Word: Shield and Prayer of Fortitude now

1. Thrallmar Farseer (3), 2/3 with windfury
2. put a Power Word: Shield (1), it is now 2/6 with windfury
   ......wait for next turn.......
3. Prayer of Fortitude (1) 3/7 with windfury
4. Divine Spirit (2) + Crazed Alchemist (2) make it a 14/2 with windfury
5. BOOM! 12 x 2 = 28 damage!!

** I put Windfury Harpy in deck for late stages in game which Thrallmar Farseer may die too quick

Scenario 2 - Priest the Doomsayer , BOOOM! 30 Damage!

1. Doomsayer (2), only 2 mana for 7 health, best choice
   
2. Silence (0), to make it a 0/7 card only
   
3. Divine Spirit (2), it is now 0/14, since it don't do any damage, other player normally won't care about it
   ......wait for next turn.......
   
4. Prayer of Fortitude (1)  or Abusive Sergeant (1), just to make it have a little Attack before swapping, it is good if you can have Dire Wolf Alpha / Raid Leader, before play, then you can skip this step
5. Divine Spirit (2) AGAIN + Crazed Alchemist (2) !!! Making it a 30/1 minion!!
6. BOOM! 30 DAMAGE!!!

Scenario 3 - 1/14 or 14/1 is your choice

1. Mogu'shan Warden / Oasis Snapjaw for its 7 health and defensive nature
   ......wait next turn......
2. Divine Spirit (2) + Crazed Alchemist (2) turning to a 14/1
3. Suddenly you turn your strong def to strong atk, why not?

This scenario should just be used if you are really unlucky, but putting these 2 out as normal defensive minions can let you have more room to wait for you real combo.

For late game, use a Ysera as start to do 28 damage.

Scenario 4 - BEST use of Alexstrasza, 3 cards = WIN

1. Place your lovely Alexstrasza, set your enemy to 15
   .......next round........
2. Divine Spirit + Crazed Alchemist turning to a 16/8
3. G-G-! No matter you have 100000000000 HEALTH!
   

No matter how many HP your enemy have, you only need 3 cards to finish him off.

********** if you tired of waiting a turn, HERE WE ARE **********

Scenario 5 - Betrayal of your own minion, THROW HIS MINION ONTO HIS FACE!

1. Dark Command your enemy minion
2. Divine Spirit + Crazed Alchemist !! I am sure it do a pretty instant >6 damage to your enemy

Scenario 6 - 20 ATK with CHARGE, WTF?

1. Stormwind Knight OMG, a neutral minion with charge and have 5 health
   
2. Divine Spirit > Divine Spirit , turn to a 2/20
   
3. Crazed Alchemist (2), BOOM! 20 DAMAGE!!! 

* To make the deck more responsive to enemy, I put quite a lot silence (Spellbreaker, Silence x 2, Mass Dispel) to dispel possible taunt minion before our attack.

Also, I tried to add more survivability to the deck, such as Ancient Watcher (to use with silence in some cases), Fade, Greater Heal.

Thanks for reading till the end, hope it wont get nerf before I can actually play it!!!