Hearthpwn

I used a similar deck with priest and then realised it should work better with paladin. It's basically an aggressive tempo-style deck. Big tempo plays are: magnetising mechs on-board for good trades or face damage, Spiteful Summoner, Grand Archivist into card draw or big board, Klangor's Endless Army. 

Tanglefur Mystic plays into the tempo idea - good stats and gives you something more to play, whereas your opponent probably won't benefit from the extra card much (it might even get in the way or blow his next card draw).

If I had them, I'd consider playing Prince Keleseth and/or Val'anyr, though the latter might be a bit slow for this deck.

Consider running Truesilver Champion, other minor card changes.