Hearthpwn

My goals for this year: keep collection actual (I'm f2p), hit legend every month, stay infinite at the arena.

Loatheb, Unstable Portal and Haunted Creeper.

Quote from ximionx >>

Spellbenders biggest strength is that noone expects it, since it´s seldomly played.

I really like most of the GVG and Naxx cards, I will miss them, except Antique Healbot and Zombie Chow.

I don't know good it or bad, but definitely huge.

I think you need these cards only if you want full collection. Maybe you can keep The Mistcaller if you really like Shaman. Other three cards are totally useless at the moment.

Quote from MurlockHolmes >>

 What is Overwolf? Could you link me to it? Just did a Google search and didn't come up with much... 

You do something completely wrong. I did 258 runs since I started to track my results and went 0-3 only once. Try to watch top arena streamers like ADWCTA and Merps, Hafu, Shadybunny. Use heartharena. Use deck tracker or Overwolf overlay. As f2p player I can't recommend coaching or playing arena for real money :)
Pick Mage, Paladin and Druid as much as possible since all of this classes are good and often straightforward to play. Rogue is one of the strongest classes, but hardest to play, I started to use it regularly when I was close to infinite arena already and my first runs were still terrible (but now it's my 1-2 class with mage and I'm infinite because of Rogue). 
Try to take you time every turn to realise every possible play, don't make first play you see, because your instincts can go wrong.
As I can see, you not very strong in terms of psychology, so when you lose, wait couple of minutes before start next game, so you will not be angry when you go 0-2 for example and will not make terrible missplays. Sometimes you start 0-2 and finish 12-2 because your deck is still good and you still in a good shape.

Priest. Warrior was worst for me before Warsong nerf but new Patron is decent midrange deck and control Warrior feels like more fair deck than control Priest so I don't hate this class anymore.

No. Evil Heckler is 4 mana 5/4, taunt. 
Kel'Thuzad is 8 mana 6/8, at the end of each turn, summon all friendly minions that died this turn.

Of course, everyone knows it. He is in Blizzard nerf list for sure, right after Wisp.

Control priest. I don't like when opponent plays my deck and have a lot of board clears in addition. Face decks are much better to play against because game will be fast at least.

Quote from WiseAsPlato >>

1. Morally it is not up to you to say well played when the opponent looses. It is up to your opponent only to decide for himself if he played well or not.

2. You can't possibly be the judge of that. Maybe he made a strategic misplay. You do not know that. You can not substantiate the claim that the loosing side played well.  You can not ever prove that. Who do you think you are to know that. Did you have some kind of  astral communication because you couldn't look in his cards.

3. If you spectate a game you can be the judge if the game played by the one you spectate was played well if he looses, not the opponent. 

4. Besides, if your opponent loose the game he obviously didn't play well otherwise he would have won.

5. Taken all this into consideration I will not possible ever understand how people think that emoting well played is a kind of consolation for the loosing side. 

6. BUT if you say well played to the winning side you are honoring the winner. That is pure logic and the only right thing to do.

Quote from WiseAsPlato >>

It's a matter of decency. The only reason "well played" is there to show respect to the winner. People who thinks otherwise have some moral and ethical issues to attent to. 

I met only 24% of paladins last month, next two classes were warlock and druid with 15% each. I wish there will be more of them all, fair classes to play against. My worst nightmare is ladder full of priests and rogues.