How has the deck been playing? Seems well optimized.

I am pleased to see how the deck evolves. Greate job! Keep it up friend!

I have some ideas, it may come in handy for You:

There are two lands I have doubts about:

I know You dont want to use lands that comes out tapped, BUT! You have Flamekin Village which I think always hit the battlefield tapped (only one elemental card Generator Servant). And its abillity to give haste for to one target creature seems to week in your deck.

Considering that You have cut Hanweir Garrison, isn't Hanweir Battlements is a little bit week land for the deck by the same reason as Flamekin Village? How about adding Boseiju, Who Shelters All or/and Cavern of Souls? These cards provide decent abillity to throw spells uncounterable. Boseiju sucks life out, but If used carefully it could be very helpful. Also Strip Mine is a good LD card for nasty lands and Command Beacon will help You to recast Your commander cheaper.

Another card that I realy think You should cut is Howling Mine. Providing additional cards to your opponents, in my opinion, is a very bad idea, especially in multiplayer. I would suggest to use: Cathartic Reunion or Faithless Looting, Druidic Satchel or at least Coercive Portal. Portal is good cuz if it is decided that you should not draw a card, then Planar Cleansing will hapend, and Purphoros, God of the Forge will remain. And in 1v1 game Coercive Portal basicaly is a Phyrexian Arena without drawback.

I'm also very curious about how the deck plays! How about a game in some of these days? :)