Deck I'm working on making use of the Dash mechanic. The idea is fairly simple. Cast cheap dash creatures and try to get cards like Warbringer, Boltwing Marauder, and most importantly, Ambuscade Shaman, onto the board as quickly as possible. Felhide Spiritbinder provides a pseudo-dash for when I have to play a dash creature, and also to generate copies of Ambuscade Shaman for multiple triggers. Cards like Gravepurge and Kolaghan's Command allow me to keep pulling creatures back from the graveyard. Purphoros, Impact Tremors, Mardu Shadowspear, and even Outpost Siege make use of the constant alternating creatures. However, Outpost Siege gives card advantage by allowing me to dash creatures straight from my library and thinning my deck by providing an additional draw.

Looking for suggestions.

Update: Removed Felhide Spiritbinders. Added 1 Purphoros, God of the Forge 1 Lightning Berserker 1 Mardu Shadowspear

Update 2: Sideboarded Purphoros, reduced Impact Tremors to 2. Added Flameshadow Conjuring. Reduced Flamerush Rider to 2 and added 2 Mardu Strike Leader. Flamerush Rider + Mardu Strike Leader produces extra tokens to trigger impact tremors, as well as copies triggering Outpost Siege's second ability, can also be used to copy Ambuscade Shaman or Boltwing Marauder for extra pump Added Reckless Imp into sideboard for flight.

Update: After testing more I've found that without cards like Ambuscade Shaman on the board, the creatures don't have the power required. Cards like Radiant Flames and Languish help with board wipes, however it seems the deck is too slow for what I am trying to do. I need some way of boosting my creatures faster or getting Shamans on the board faster.