A lot of synergies here, I will explain choices later if I still love the deck in a few days.
Plenty of colorless cards to feed Furnace, Worldpyre can help feed furnace when the opponent removes it or power out big units early. Blow the dam is here to dump your market into the graveyard for Razca, but this is not the entire point of the deck, I just thought it was an interesting idea. Broker also feeds Furnace, and can put more dragons into the deck, the Market is not really designed for anything and could probably become better dragons in the event of recurring them.