Well, today I lived a learning experience
I was curious about fatigue mage that kolento plays so I watched a 35 min video of him playing with said deck beating everyone.
I was thinking to myself that the deck looked so powerful to fight against that I was scared to fight one.
Anyway, I was playing with my priest deck and I topped with a mage deck, I had a northsire cleric on my initial hand so I decided to play it at second turn since I also had a power word: shield.
After summoning her, the mage used his ability to hurt my northshire cleric, I healed it, the next turn he did the same and then I realized that he had a fatigue deck too, so he will try to make draw cards by winning by fatigue. Then I stopped using her abilty knowing that that will be my doom later. He played the same cards that kolento and in the end I won thanks to ysera with ysera awakens and a holy nova in the final turn, after surviving 2 antique healbot and I turn where I couldn't damage him
I won with 4 cards in my deck and the 30 hp. I know that decks don't make you win automaticaly and that with a better player I could had more troubles, but at least I knew in part how to respond against that deck