Frostwolf is just too damned slow. You need Charge minions. I dropped both Call of the Void (if it gives you anything that costs over five it's effectively a dead card in hand) and the Frostwolf for two Stonetusk Boars and one Stormwind Knight (simply because it has five health). Bluegill Warrior would work, too - the goal is to boost them with the Dire Wolf, Dwarf, and Sergeants. There will be times when you're 1-3 damage away from lethal and just can't get there because this deck lacks prompt burst damage.
The Infiltrators are arguably valuable for the ability to clear the Explosive Traps that'll be this thing's bane. I'd also advise losing the Faerie Dragons for Owls. You've got to be able to get through taunts, and immunity to spells won't get you that.