/edit The post below was made back then, when the AI didn't bother to target Cloak.
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5op 5v2 5v2 5v2 5v2 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6u3 6u3 6u3 6u3 6u3 6u3 711 77f 77f 7ad 7di 7gt 7q5 7q5 7q5 80d 80d 80d 8pj
The best thing about Cloak is that the AI never targets it.
General strategy:
Play Hourglass and Pulverizer ASAP, maybe play an early Cloak if your (AI-) opponent has much permanent control. When there are around 17 cards left in your deck, start playing the true combo of this deck: Cloak + Phase Shield. Now play your dragons and chain your Cloaks and shields.
The above decks performs fine, I think, although I cannot give you any statistics.
Pros:
+ Very fast
+ Interesting and fun to play
+ Not too expensive because the shields or dragons for example do not need to be upgraded.
+ There are some nice variations possible (see below)
Contras:
- Prone to mass control (Thunder Storm, Plague, etc.)
- Prone to speed poison
- You will never reach EM (Miracle is just for survivability)
Variations:
- You CAN get EM by adding Miracle + Heal or Chimera + Liquid Shadow
- If you know you fight a FG with neither permanent nor creature control, you may remove the Cloaks (4 cards!) and add dragons, Sky Blitzs, Heals, etc.
- If you do not have the Ivory dragon, I'd suggest the Amethyst dragon
/edit: New version, thanks Rasta