Zoakselot

Great deck idea. The only thing I could recommend, would be to add more cards that make Marionette Master's power higher specifically, permanently higher, and also cards that you can use to defend yourself against creature early game, until you can get out the master. Also, add more deck tags.

I would recommend not splashing white, but instead splashing black. There are some great black/green cards that would help this deck, like Corpsejack Menace. With black added, you could also use Abrupt Decay, for early removal. You should have some cards with higher mana costs for late game. To help you get those higher mana costing cards, you could use Gyre Sage (which also uses counters). If you are having trouble getting cards out because of counters, use Savage Summoning. If you used a Reverent Hunter or two, you could get a 9/9 by third turn, if you had out a hardened scales, and if you had multiple hardened scales, Your creature would be huge. If you are playing against a deck that likes to go into late game, use a hydra that has x in its mana cost. I Recommend Vastwood hydra, because although the counters do not enter doubled, they will double when it dies. You might try Rubblebelt Raiders, which would also increase your devotion to green. If you are playing against a graveyard deck, and you have a Scavenging Ooze, you've practically won. Use Verdurous Gearhulk in your mainboard, because, at worst, it's a 5 mana 8/8 with trample. And that's at worst. Try a Nykthos, Shrine to Nyx.

Thanks. I hadn't thought of using Darksteel Citadel to boost Cranial Plating. How about Great Furnace? I like the idea of splashing white for Kor Dualist, and Dispatch, but Mirran Crusader, and Etched champion don't seem to fit the idea of the deck. Steelshaper's Gift seems useless because there is no specific equipment that is better than all the others. I think I will have to look into some other white cards before splashing.