Are there any viable fire mage decks? I've tried putting together a few, but after playtesting they just don't seem to work.

I'll posts the lists later.

One that I've bene playing and it is fun if nothing else is

Hero (1)
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Ta'zo

Allies (6)
---------
4 x Blood Knight Kyria
2 x Shadala

Equipment (5)
----------------
3 x Gladiator's Spellblade
2 x Eye of Quagmiran

Abilities (37)
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4 x Amplify Magic
4 x Blast Wave
4 x Dragon's Breath
4 x Fire Blast
4 x Fire Power
4 x Fizzle
4 x Living Pyre
3 x Pyroclastic Consumption
3 x Spell Richochet
3 x The More, the Scarier

Quests (12)
-------------
4 x Forces of Jaedenar
4 x Orders from lady Vashj
4 x Sen'jin Village

Side (10)
------------
4 x Metalmorph
2 x Shadala
2 x Silea Dawnwalker
2 x The Bringer of Death

I've been trying a blaize variant of Ressa

Hero
Blaize Brightspark

Allies
4 Apprentice Merry
4 Jeleane Nightbreeze
4 "Lowdown" Luppo Shadefizzle
4 Myriam Starcaller
2 Talian Bladebender
3 Weldon Barov

Equipment
3 Belt of Blasting
3 Freezing Band
4 Icon of the Silver Crescent

Abilities
4 Blast Wave
4 Dragon's Breath
4 Fire Blast
3 Nether Fracture

Quests
2 Corki's Ransom
3 Orders from Lady Vashj
4 The Last Barov
4 The Defias Brotherhood

Side
3 Metalmorph
3 Spellsteal
3 Spell Suppression
1 Talian Bladebender