Relentless Rush, the red/black Intro Pack for Dragons of Tarkir, features an alternate art foil version of Boltwing Marauder and a whole suite of creatures featuring the Dash mechanic. Using Dash lets you cast a creature, sometimes even for cheaper than its original casting cost, and giving it haste at the cost. That haste comes with a cost, however: having to return it to your hand at the end of the turn. This deck focuses on hitting hard and fast with the Marauder being a potential finisher. It also features a decent uncommon in Lightning Berserker and an interesting rare card in Foul Renewal.