Hearthpwn

This is of course very similar to PsyGuenther's burn mage, which I am sure most people have played against numerous times on ladder.  However, the addition of the Curator package changes several key matchups. The main strength of the Curator package is giving you Alextrasza more consistently no matter what matchup you're playing in.  

Card Choices:

The Curator:  Again, the main strength and the reason i had this idea is that you want Alextrasza in any matchup in which the game isn't decided by turn 7.  Primordial drake is also an exceptional card in the current meta, and this gives you a reason to run it.  Overall, I won't claim that this tech is unequivocally better, but at least the in the meta I was playing against it was more succesful for me.

Primordial Drake:  One of the best cards to come out of Un'goro, it is just an insanely effective defensive tool.  The fact that this deck has an excuse to run this card now that it is running Curator is insane.  Is a great defensive curve after playing Curator and can singlehandedly win games against shaman and paladin, as well as provide the final defensive punch versus pirate warrior.  Just a great card.

Stampeding Kodo: The best beast available to run along with the Curator.  Insane against taunt warrior and if you draw it it makes a close matchup favorable.  Solid against both shaman and paladin and can generally find a couple of targets in any deck.  Some specifically great targets include Finja, Doomsayer, Acolyte, Mana Tide, and Flametounge.

Volcanic Potion:  I have seen some Guenther Mages cut it completely and I completely disagree with that.  I considered running two in the current meta, but I think the drake gives this deck a "1.5" volcanic pot feel, which is what I would run if I could.  You simply aoe too much against shaman and aggro druid.

Eater of Secrets:  Playing the deck today (June 18), I am considering cutting this card as the number of mages has decreased considerably.  However, on my grind to legend this card was a must have.  This card choice just depends on your local meta, choose yourself if you want to have it and what you want to replace it with if you are not facing enough mages.  This is most definitely a tech slot depending on your personal meta.

Counter Spell:  This is my personal preference and i prefer it to Ice Barrier but both are good in this deck.  I find that Counterspell is great against mages, solid against shamans and warriors, and is just a more tempo oriented secret than Ice Barrier.  I think that with kodo and curator this deck plays a more tempo playstyle as opposed to typical Guenther mage, which is why i chose Counterspell as opposed to Ice Barrier.