The idea is that, with Owen and Blue on the battlefield at once, you can use Owens ability to put one of the four types of counter listed on Blue during your turn
Meanwhile, the downside is that Boros Aggro isn't nearly as heavily played as Azorius Aggro (having blue sideboard cards like Negate really helps shore up the matchup against Nexus of Fate / Wilderness Reclamation decks, along with Esper Control), and you'll still need to invest in Sacred Foundry and Clifftop Retreat, which aren't cheap
1 Tarkir: Dragonstorm Collector Booster containing 15 MTG cards and 1 Traditional Foil double-sided tokenFIGHT DRAGONS WITH DRAGONS Return to Tarkir for an epic battle between dragons and clans
Because the prices can fluctuate often, GameStop's offers will only be valid during that transaction
The card itself is a great bit of recursion on the front side, and its flip side Leyline Surge can give you a huge advantage