Mono-Fire aggro with the help of new card from Horus Travers. Capable of T5 kills if they falter.
Finally updated after so long. FoA added numerous tools and the addition of the market and Standards added a lot of power.
Hotblood Barbarian proves even the dinkiest of Berserk units make Berserk a dumb mechanic. As for my market choices:
Factory Quota: Great against control decks with low unit counts. Keeps them from using Lifegain to recover, makes them make weird plays, and applies pressure. Great card overall.
Bore: Just great when they have a mess of attachments. Have a couple of units under
Permafrost? Not anymore. They're playing a deck that relies on a relic? Sorry.
Longbarrel: You have no way to heal in the aggro mirror, so pick off a guy, pump one of yours, and just get in there.
Mindfire: You have 4 power. They have two blockers. Cinder Yeti doesn't let you finish them off this turn. But you just drew a Merchant. GG.
Ankle Cutter: No one really liked Duarde, right? (By which I mean the musician. But the card is annoying, too.)