I upvoted you, so that in a week you will have one more card available to purchase :)
Fire + Malric Inferno tends to work well in this particular conflict. Having a second creature (with Trample) also works wonders in this conflict, but not so much in this mana cap.
I know that Malric Inferno is pretty decent but I only started playing two days ago and kinda invested everything towards the earth set of cards so it's kinda hard now im up in the 3000's :)