I wanted to build a deck around Prophetic Flamespeaker.  Its ability forces opponents into a lot of tough decisions.  The goal is to be explosive out of the gates with a variety of win conditions.  If it gets slowed down by removal there are a couple modes of card draw to get more action.  In a stalemate against bigger creatures Break Through the Line pushes almost all the creatures through with the ability to pump with Dragon Mantle, Titan's Strength, or Thunderous Might for extra damage after unblockable is applied.  My biggest struggles are against very removal heavy control decks but it can put enough pressure to keep them on the back foot and strike when they have mana tapped out.  Overall a very fun, fast deck to play.