This is pretty hard to brew, because this isn’t really a proactive deck. Reactive decks are always harder in the beginning of the format, when you don’t really know what you are reacting to. Also, design has moved into a direction where creatures often still have value even if killed immediately and there are good ways for midrange decks to gain card advantage in grindy matchups.
In order to make their game more approachable to new players and to keep the game fresher, Wizards’ R&D began to emphasize creatures over spells. This has been good for the game, as now those cards that appeal to new players are actually good, and not just heartbreaking as they are easily dispatched or countered as they used to be.
I played this deck at GP Utrecht today (Standard). I went 6-3 (with one bye), so I could have done better, but I think this was a pretty good choice for this specific tournament. The key: Burning Earth