Hearthpwn

Hey there I'm Shadow, a big Priest player and if there is one think I like about Priest, it's beating people with their own cards. This deck I have here is all about that, it's loads of fun to play, not too competitive. 

Goal of the Deck

The goal of this deck is to copy your opponents cards and use them against them, that's really about it. You control the board in the early game, then you play the larger cards you might have stolen in the late game. 

Early game control can be done with cards such as Shadow Word: Pain, Shadow Word: Death, Potion of Madness, Shadow Madness, and whatever other cards you might have copied from your opponent. Make sure to keep a Potion of Madness for the following play.

Combo Play

You may be wondering Madam Goya is in here, well my friend she is in here for my amazing combo that does the same thing as Entomb for 2 more mana and only on minions with less than 5 attack. 

Using Pint-Size Potion to first weaken your enemies minions, then use Potion of Madness on your preferred target, do whatever you want with it, but kill it. Finally use Madam Goya to shuffle it in your deck, as to jeep it forever. 

You can use Cabal Shadow Priest too if you don't have Goya, but you lose out on the ability to reuse its battlecry. Plus it's a lot cooler.

Mulligans

For mulligans, I suggest trying to mulligan into a Crystalline Oracle or Loot Hoarder.

If you're against a control deck I would keep a Thoughtsteal as you're at little risk to play it on turn 3, a Shadow Word: Death is something I keep for their mid game cards. 

For an aggro deck, keep a Holy Nova and a Shadow Word: Pain or Potion of Madness to deal with the early game minions.

You should also keep a Shadow Word: Pain if against a taunt warrior, it will help you deal with minions such as Stubborn Gastropod and Alley Armorsmith, who are better dealt with without minions.

Conclusion

In conclusion, you can use this deck in competitive, though you may have a negative winrate. But this is a real fun deck to try out when you need to unwind after some tough games and I hope you give it a try. 

If you have any questions about the deck or need some card replacement suggestions, comment and I'll get you as soon as possible. For now, enjoy this comic that is the inspiration for this deck. Partially.