Not gonna lie, it took some luck XD. But basically I would focus on using Wild Charge (or whatever it's called, the 10 damage one) and Snarl for my damage, and focused a lot on using blocks strategically to get focus for next turn. In my opinion, block is the most fun card in the game so far, because it serves an immediate purpose (blocking) but it also serves a purpose for the next turn (giving you more focus).