Hearthpwn

You pulled out Temporus ( "one of the worst cards in set" )
Here is the deck list that can be even much much more cheaper if you have some keycards:
Temporus
Prophet Velen
Mirage Caller
Youthful Brewmaster
Holy Smite
Mind Blast
Dragonfire Potion - Not the combo card but really important AOE.

We have Raza,Kazakus and DK package which means 1 card only.
This gives us a lot better late game if we don't draw combo early.
This is not important tho but you don't need 2 Mind Blast because 1 Mind Blast will finish off your opponent 90% of times as it deals 40 DAMAGE.

The combo is simple all you have to do is play safely Temporus
Than play Prophet Velen and copy it with Mirage Caller, after that play Youthful Brewmaster on Mirage Caller and again copy the Prophet Velen. 
After that just deal 40 damage with Mind Blast and some more damage with Holy Smite

Cheaper replacements :
Harrison Jones - Any Ooze ( that can destroy weapon )
Bloodmage Thalnos - Novice Engineer
Dragonfire Potion - Holy Nova or Duskbreaker
If u add Duskbreaker you need to put some more dragons.
Temporus - Murloc Raider