This deck has had the highest winning percentage of any I've tried since BFZ came out (22/25 for 88%). It's Boros Tokens, but at heart it's a combo deck, though it's more than happy to just go wide and beat down. It's not as fast as RDW, but it is much more resilient, and able to force through lethal damage around turns 6-8 against moderate life-gain, removal, etc. The basic idea is to go as wide as possible, then pump the team with the white enchantments and/or Gideon emblem. It's very synergistic.
I believe that it is really well positioned for the current meta. If it were to become popular it'd be pretty easy to hate out (enchantment hate and sweepers are both bad news), but against decks that don't disrupt what it's trying to do, I don't think much can keep up with it.
Creatures
1 x
Kytheon, Hero of Akros2 x
Knight of the White Orchid2 x
Abbot of Keral Keep3 x
Akoum Stonewaker3 x
Chief of the Foundry3 x
Thopter Engineer4 x
Ghirapor Gearcrafter1 x
Chandra, Fire of Kaladesh1 x
Akoum Firebird2 x
Pia and Kiran Nalaar1 x
Oblivion SowerEnchantments
3 x
Valor in Akros3 x
Retreat to EmeriaSpells
4 x
Dragon FodderPlaneswalkers
1 x
Gideon, Ally of ZendikarLands
7 x
Plains7 x
Mountain2 x
Clifftop Retreat4 x
Evolving Wilds3 x
Boros Guildgate3 x
Foundry of the ConsulsThe Foundries are a key to the deck. The dream with them is to have a Retreat, a Valor, and a Thopter Engineer in play, play the Foundry, sac the Foundry, and swing with the fresh tokens pumped for +2 and everything else pumped for +3. Valor in Akros is a card I've bashed pretty strongly in the past, but with Retreat to Emeria and Akoum Stonewaker, it's time to take it seriously. Pumping the entire team when you've gone wide is a huge deal, particularly with a deck that by turn five or six can commonly put three or four creatures into play in a turn. Evolving Wilds are also fantastic with Retreat to Emeria.
I'd be very curious to know if others have the same success with the deck that I have had. I think it's a fairly close to optimal list for what it's trying to do. The flex card is Oblivion Sower. He's great if you've got Retreat to Emeria down, but I suspect he's actually a bit too win-more. The fourth Boros Guild-Gate is probably the stronger (if less fun) option for that deck slot. Retreat to Valakut would be another possible option.