Hearthpwn

Like it says in the title, this is my relatively-cheap Elemental Mage and has served me pretty well so far.

Spells abound in this deck, with the 2-mana slot almost exclusively focused on generating more clearing power and other cards to answer your opponent. Really just about everything works to control the table and/or create more opportunities to hold the door board. If you don't win naturally via your mid-game minions (Steam Surger, Leyline Manipulator, etc.), Frost Lich Jaina carries the late-game burden with her seemingly-endless value. Card draw isn't as much of an issue - for me, anyway - as the generated cards fill your hand up on their own, and there's always Bonfire Elemental as well.

The most expensive cards in this deck - DK Jaina, Baron Geddon, Meteor, and Primordial Glyph - are all mainstays of Control Mage archetypes, so crafting them is not a major gamble. Blazecaller is the most expendable card in the Epic tier, but he's very handy for closing out the game, clearing threats and/or chunk-healing via DK Jaina's Lifesteal effect.

The deck could stand to be improved further, but for now this functions as a halfway-decent entry into the Control Elemental archetype for those lacking in a lot of niche Legendaries or Epics, and can only craft the more universal stuff.