Hearthpwn

This is my Battlecry Shaman deck: There is 7 Overload cards and 15 Battlecry minions for a lot of synergies. The main goal of this deck is to take the board control as soon as possible and keep it until you can snowball the game with a powerfull combo or end it with a burst...

> Sir Finley Mrrgglton: This little guy give you the possibility to take a Hero Power more adapted to counter your enemy. Against aggressive decks, Armor Up!, Lesser Heal or even Shapeshift can allow you to survive until your opponent run out of steam. Against some control decks, Life Tap will help you to have answers in hand when you need them, whereas Fireblast can be useful for board control, and Steady Shot for finish a low health player...

> Tunnel Trogg: Pretty solid, helpful against small early minions or tokens and can become very dangerous with seven Overload cards in the deck, even in late game.

> Eternal Sentinel: A nice Turn 2 minion if Totem Golem not show, and a good Turn 3 minion after a Turn 2 Totem Golem. His Battlecry can be useful for cancel Overload from cards like Feral Spirit or Lightning Storm, and if you don't have Overload, you still have a good minion...

> Flametongue Totem: Here for help some difficult trade or use your Totems from Hero Power.

> Jeweled Scarab: This is your polyvalent tool. He can give you very interesting cards like Healing Wave, Hex, Lava Burst, Lightning Storm, Mana Tide Totem, Tuskarr Totemic, Mind Control Tech, another Battlecry minions for Brann Bronzebeard or sometimes Brann himself... Combo with him for gain two free cards.

> Stormcrack: Can enhance your Tunnel Trogg, kill minions hide behind Taunt, and also kill bigger target with Spell Damage from yours Wrath of Air Totem and Azure Drake. If you face a lot of fast decks, you can switch this for Lightning Bolt.

> Totem Golem: The best Turn 2 of the game, he is very solid so he can kill two or three minions, especially with the help of Healing Totem. With Tunnel Trogg, Eternal Sentinel, Feral Spirit and Tuskarr Totemic you can have a very strong early game.

> Brann Bronzebeard: Core of this deck, it allow some powerfull combo able to reverse the course of the game, especially with Jeweled Scarab, Tuskarr Totemic, The Mistcaller or Nefarian. Don't waste him, if you think your opponent can kill him, play him with Battlecry minion in a same turn.

> Feral Spirit: One of your Taunt, so try to use him when you're sure he will slow down your opponent or stop lethal damage. Be careful: Overload (2) in early game can be very annoying.

> Hex: Doesn't need any explanations, it's your best tool. Try to keep them for the biggest threats in opponent's deck, like Doomguard, Archmage Antonidas, Dr. Boom, Tirion Fordring...

> Lightning Storm: It's your only aoe, so use it wisely and be careful with Overload (2). Can be more dangerous with Spell Damage from yours Wrath of Air Totem and Azure Drake.

> Tuskarr Totemic: A pretty weak minion when you don't have board control, because he is fragile, but sometimes he can give you some good Totems and lock your victory. Try to always anticipate aoe from your opponent for not give them too much value. Combo with Brann Bronzebeard for two times more likely to have useful Totems.

> Defender of Argus: One of your Taunt, so try to use him when you have two minions in game, or for nice trade. Only one because if you have an empty board, it's a pretty bad card. Combo with Brann Bronzebeard for two powerful +2+2 Taunt minions.

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> Master of Evolution: A strong body, even if your board is empty, and a powerful effect able to win the game alone, when your Jeweled Scarab will become a Injured Blademaster, your Tuskarr Totemic will be replace by a Hungry Dragon, or your Defender of Argus will give you a Earth Elemental! Stronger and broken combo with Brann Bronzebeard. And there is a lot of natural target for Master of Evolution in this deck, like Jeweled Scarab, Tuskarr Totemic, Defender of Argus, Azure Drake, The Mistcaller and The Curator.

> Azure Drake: Draw, Spell power, nice stats and it's a Dragon if you gain Blackwing Technician from Jeweled Scarab, and a very good target for Master of Evolution! Combo with Brann Bronzebeard for a free Arcane Intellect.

> Bloodlust: Your main victory condition. With a lot of early minions in this deck, and with help of Tuskarr Totemic and Totemic Call or Reinforce, you can surprise your opponent with unexpected lethal damage. Nice counter to Reno Jackson or C'Thun decks, and a nice way to avoid late-game against control deck in general.

> Fire Elemental: Still the best Turn 6 for Shamans, powerful Battlecry, nice stats. Combo with Brann Bronzebeard for a free Fireball.

> The Mistcaller: Slow legendary minion, but against control deck his effect is very powerful, changing all your minions in dangerous monsters. This card help your small minions to stay useful. In a long game, he is devastating and can give you victory. Nice combo with Brann Bronzebeard for +2+2 to all your minions!

> The Curator: Another useful Taunt for the deck, another good target for Master of Evolution, and a nice Battlecry who can draw up to three cards (Sir Finley Mrrgglton, Jeweled Scarab, Azure Drake, Nefarian) or more with Brann Bronzebeard on board!

> Nefarian: A powerful tool against control deck, because of the two free cards. If you can combo this with Brann Bronzebeard, you are on track for victory.

Mulligan: Try to keep in starting hand Lightning Bolt, Sir Finley Mrrgglton, Tunnel Trogg, Eternal Sentinel and Totem Golem. You can keep Tuskarr Totemic too if you have already some Turn 1 or Turn 2 minions or The Coin. 

Feral Spirit can be risky in early game because of Overload (2), so be careful. Brann Bronzebeard is an important combo enabler, so against non-aggro opponent it's not necessarily useful to play him too fast. And for Jeweled Scarab, it's not always a good idea to keep him in starting hand, unless you don't have any Turn 2 and Turn 3 minions, because you should choose one of his cards according to circumstances, as a emergency tool for filling a gap.

You need absolutely drop something Turn 1 or Turn 2, because this deck is slightly weaker if you must fight for retake the board. A lot of your minions are very annoying if your opponent must play something from his hand for killing them because you are the one who make the efficient trades.

Possible Change: > Ancestral Knowledge: An amazing emergency tool when your opponent drop something dangerous and you don't have answers in hand. And with the annoying minion in the deck, when your ahead and you don't want to over-extend, you can draw two more cards for a safer game.

> Youthful Brewmaster: For more combo enabler, this card can allow you to reuse some powerful Battlecry minions like Jeweled Scarab, Antique Healbot or The Mistcaller.

> Flame Juggler: A nice Turn 2 minion if Totem Golem not show, and a good Turn 3 minion after a Turn 2 Totem Golem. His Battlecry can sometimes be useful for killing a low health enemy minion or token, and for broke a Divine Shield. Combo with Brann Bronzebeard for a small Flamewaker.

> Earthen Ring Farseer: A decent Turn 3 minion, helpfull for slow down the decrease of your health against aggro deck, or for healing a friendly minion, enabling it to kill more enemies before dying. Combo with Brann Bronzebeard for a free Holy Light. For more heal, you can play Refreshment Vendor too.

> Fireguard Destroyer: Your faster and bigger threat. With six health, your opponent will have difficulties for kill them without losing too much cards, especially so early in the game, and with high attack value, a lot of usual Turn 4 or 5 enemy minions will die instantly. Can also enhance your Tunnel Trogg. Good target for Defender of Argus, and a more threatening combo with Brann Bronzebeard for minion with up to eleven attack value!

> Rumbling Elemental: A weak minion if you don't have board control, because he can't kill a lot of targets by himself with his low attack value, and his random effect can be disappointing sometimes. However, his ability can be useful for killing low health minions, even if they have Stealth or hide behind Taunt. Good target for Defender of Argus.

> Harrison Jones: In a weapon classes meta, this card can be a great enhancement to the deck. You can use Acidic Swamp Ooze too if you want more weapons counter or if you want to keep your mana curve as low as possible for non-weapon or very fast aggro deck. 

> Hallazeal the Ascended: Your healing tool in this deck. Very powerful with your Lightning Storm for clear opponent's board and bring you back full life! All damage spells can be good with him (thanks Lightning Bolt and Jeweled Scarab). Even if you can't or don't want to use his ability, you can play a good Turn 5 minion with a frightening ability for your opponent. If you face a lot of aggro decks, you can switch this for Healing Wave.

My other deck: A Curator Dragon Shaman pretty good: http://www.hearthpwn.com/decks/621958-karazhan-curator-dragon-shaman