Hearthpwn

This deck is not T1 of course, but is a fresh way to play priest in this meta. I have 60% winrate on 30 game (with tracker; rank 7=> 5), not best winrate butt still a deck playble.
Sorry for my bad english.
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The strategy is based on initiative and resiliance. So you need be carefoul and you need to play around AoE with yours Deathrattle and yours magnetics cards.
I win between turn 7 and turn 14; but I thinks you can win still later.
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- Inner Fire is good for some value trade or extra damage. (we need the initiative all time)

- Kaboom Bot is probally the worst card, but I things is stil better than Silence against aggro deck. If you find too many Mage maybe you can put the 2° Shadow Word: Death.

- Madame Lazul is a great card against warrior (play it at turn 6 for better chance to get Dr. Boom) and is help to add some value or some card we need in that game. Generally is not a bad card.

- 6 deathrattle's minions costs 4 or less mana and haven't a great body; so play when you can if you have a chance to play Coffin Crasher on next turn.

- Sometimes Hench-Clan Shadequill is a good target for Coffin Crasher, sometimes is better play HCS before. Is a great card against warrior because you can break the armor in early game and is basically a 4/7 vanilla. With coin you can keep it at mulligan. Good so against aggro.

- Shadowy Figure is good on Coffin Crasher if you need tempo, but normally the best play is with Mechanical Whelp at 8 mana. Cairne Bloodhoof also is a good target. In some rare case you need to play with Dead Ringer.

- Zilliax is the only healing card we have, so play it at the right moment. If you can buff/magnetise it.
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The Mulligan is pretty simple: search for T1 or T2; if you have Cleric or Upgradeable Framebot you can keep Extra Arms. If you have the coin you can keep HCS ( maybe not against Hunter). If you have a good curve you can keep it alla cards.  Against mage search for Shadow Word: Death. Against Hunter maybe a "token" card is good. Grossomodo is that.
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If you have to do some remplacements I reccomend you:
- Silence, Mass dispell or Spellbreaker? I think the last is the best in this deck, I don't think is worth it Mass Dispell. But Silences abilities are very good in this meta.
- 2° shadowy figure: is good and add some liberty for combos for more tempo or card draw play.

[Cairne is a key card; the only other card that cost a lot of dust is Madame Lazul; so I thinked to her for the remplacements]
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Have fun and tell me if you enjoy.