Been struggling my way up the ladder this month. I feel like I've tried everything, and finally, fed up after going 1-3 trying out that terrible combrei aggro deck, I went back to a classic, and cleaned house with Rakano aggro.
Rakano was the first deck I ever played in ranked, it's always been top tier, and continues to preform. Bolt, giant growth, aggression, charge, and great weapons.
If you're struggling to get out of your ranked tier, just throw this together and play it. It's the best aggro deck hands down.
Any questions, feel free to comment.