Artifact decks got the fodder they finally needed to be top deck/broken deck I think from the new set.
There is a small chance control black/blue comes back with it from some of the cards that came out, and white weenie is my third guess of deck types to potentially beat.
We'll see though, most decks in this day and age have wound up being multicolor in the deck lists from high end tournament play. My guess with the artifact deck is that one will try to play multicolor mix of black/red/blue and play the best artifacts. x)