Hearthpwn

Can you use Kirin Tor Mage instead of Mad Scientist? I'm just wondering.

I guess you could, though I recommend you get Naxx for scientists since they have amazing value in tempo mage. Or you could not run scientists or secrets at all and add other cards such as a second arcane blast/flamecannon or a water elemental.

I have all adventure expansion cards, so mad scientist isn't an issue. I'm just wondering because a 0 cost secret is pretty neat, in case it's in your hand and not in the deck.

what other card can i change Harrison Jones with?

Loatheb

Thanks man, gladly i was lucky enough to get the card and gold :)

 
I personally like Lothab more in general because not every class runs weaps but a well timed Lo-lock can kill most players.

Piloted Sky Golem is a solid, cheap 6-drop alternative.

What about Cairne Bloodhoof Instead of Golom?

That sounds like a solid alternative, too.

What can I use if I don't have Ragnaros? I'm thinking to try Chromaggus or Kel'Thuzad instead?

Yes, they both sound like very solid 8 drops for this deck.