Hearthpwn

The most difficult part is the first one where the enemy has got some 2/3 dragons which gain +2/+2 when you cast a spell.

With this warrior deck, I managed to kill these dragons without letting them get the buffs. I used the weapon. I kept the negative cards in my hands because when I get rid of them these dragons gain +2/+2. In turn 3-4 I started getting rid of them, when the enemy didn't have these powerful dragons. 

It is important not to let them receive the +2/+2 buff.

After that I took advantage of the cards that gain stats (like Frothing Berserker or Flesheating Ghoul) when a minion takes damage or dies. They became powerful and I won.

This guide was written according to my collection. Import it and change the ones you are missing with similar cards.

If you liked this small guide give me a +1. Thanks.