Good post, and good battle!

For an alternative to the Goblin Fireballer, for the same mana cost, you might consider Battering Ram which is a neutral card with Opportunity. So depending on if you need to focus on the enemy's tank, or on their back row squishies, one might be better than the other for 2 mana. But the Battering Ram is weak against everyone using Mylor right now. Still, it gives you options. And it's DICE edition, so it'll be useful for new players focusing on building decks from newer cards.

Welcome to the game.