I think you are going to need more token producers. Even with all your dig, I imagine you spend a lot of time trying to find your peices. I would lose the 4 pillar of flames for either Thatcher Revolt
or Goblin Rally
. You really shouldn't have mana problems after you start going off. I would not include Inspiration, since its a dead draw if you are working off of Battle Hymn mana.
I've seen a few lists running 2 Increasing Vengeance
, since you can flash it back for
off of Past in flames, and still get the double copy on whatever you're aiming it at. great for getting insane amounts of mana from a hymn or lots of dudes.
Also, consider Dangerous Wager
over Reforge the soul. You can flash it back easier, and it helps you pitch your hand to stack a Past in Flames without relying on lucky draws.