Hearthpwn

I'm having a lot of success with this in the 20-15 range this afternoon. Your Archmage Arugal suggestion has really solved my week long struggle to "fix" my beloved tempo/aggro mage deck. 

I've tried just about everything else: I tried a crow, I  tried a cat, I tried crows and cats. I tried spell damage. and I tried the very trendy Amani Beserker. I even tried a few different combinations of secrets instead of the 2 CS / 2 Exploding ones. And I tried running the Black Knight to deal with the enormous amounts of HUGE minions in the meta. Recruit hunters, taunt druids, The Lich King and Priordial Drakes all over the place.

To deal with board flooding paladins, I tried to squeeze cones of cold in there. I felt they were more dependable than the 1 mana spell. More expensive of course, but with desired effect for two or three minions. Until the board refloods.  It did not feel economical nor did it fit well in the flow of the deck. 

I feel that your deck is very close to feeling 'right'. I've personally made just a small adjustment:  

I removed ONE Arcane Missiles and replaced it with ONE Secretkeeper .

I have a good relationship with Secretkeepers.  They are an additonal 1 mana minion, as opposed to a spell. We have few enough minions as it is. In the meta, the secretkeeper is quite effective. Hunters hate them. Other mages hate them. And frankly, most people seem to not like them much. They are effective at delaying damage to minions who matter, like Mana Wyrms and Kirin Tor Mages. Although they can also be quite strong in themselves.  I find the Fire flies cumbersome and annoying and not right for a non-elemental deck.

A MULLIGAN comment - for Priests and other mages, I recommend keeping the Frostbolt. It's always nice to one-shot a Northshire Cleric, or another mage's Mana Wyrm. 

I'm at 54% after 19-16 games. I lose consistently to Recruit hunters who draw Prince Keleseth early, and Taunt druids can be very tricky still. I've even beat an Odd Pally or two.

useless deck 

Is the Archmage Arugal crucial in this deck? Im getting a bit of success without it but would like to here from those who have drawn him early. 

Which replacement are you using?

I was using Mirror Image, but havnt run this deck in a while

Nice deck. I just feel dirty after playing it.

The deck is super fast to climb up to rank 5

It can do insane dmg if your start with wyrm.

But in no means to get legend as fast as poster claims.

If no 1/2 drops in your starting hand your chances are getting below 50% to win, especially against any pala deck out there

Whoa, why so salty?

This deck is only good against bad budget decks... It has no chances against strong decks with healing cards/spells like Shaman, Warlock...

shit like this is what ruining the fun in hearthstone, its dogshit levels of fun to play against, you play a card on curve every turn and its either hit by counterspell or exlosive rune and then your dead before you get to play your 5th turn. 

Thanks for the list! Had a good run this afternoon/evening in doing my testing for this deck.
Keep in mind I don't have Aluneth so I subbed in an extra lifedrinker for a bit more hp gain / over-the-top reach.
Went 10-1. 
https://imgur.com/a/2Zt6xnJ

Bump Hadronox deck guide. That could continue to climb especially after the nerf.

I am new layer and tried several Ago mage decks before but not success. Find this deck and at the first sight, it makes me surprised. 29 out of 30 are mages cards.

Try it and absolutely get fun. Great deck.

Blown out by proper aggro and outlasted by control, trash tier deck!

Managed to climb 15-10 within an hour with this deck. Only lost to Taunt/Armor Druid. 

Replaced Archmage Arugal with Mirror Image which turned out to be key in Odd Rogue matchups early game. They allow your board to stay up and deal damage, forcing him to use his weapon on the 0/2 Taunts. By turn 3, you should have a strong enough board to force him to trade inefficiently. 

Against Paladin discovering Spellbender and against Rogue discovering Vaporize is super clutch.  In general, the versatility of Arcane Keysmith is crazy and can usually swing matchups to your favor. Try to utilize Counterspell strategically, turn 10 against Druid, turn 4 against paladin, midgame against Mage, etc.

As stated in other posts, HARD mulligan for minions and protect them with your spells (Mirror Image, Frostbolt, even Cinderstorm)

then you play odd pally and see where the 44% loss is

if only there was some kinda aoe to deal with all them 1/1

pally right now is much slower and I don't really mind playing vs them, for example even shaman is way worse

Absolutely weak against tier1 deck Spiteful druid. Simply you can not outpace them. Too bad on high ranks there are tons of spiteful druids. 

my experience is different, spiteful druid seems to be too slow, our early minions are stronger and until turn 6 you should be able to establish a good enough board, while our turn 6 play is more powerful