I played a build of this deck to a 5-1 finish at our local Vintage today, losing the first round to shops on the draw, then beating Oath twice, Landstill twice, and finally the other 5-1 Pyromancer deck. I likely would have beat shops on the play and the other matches never felt close.
This is the list I played:
I recognize that Slimefoot is just gratuitous, but I said I was going to play it and I held to my word. I would definitely like to play Leovold in that slot. The sideboard can use some work.