Also, ten non creature "creatures" seem like more than enough, and you run 12 right now. Maybe it's worth cutting 2 or more blinkmoth nexuses for ghost quarters or fields of ruin. It'll really increase ur win percentage against decks like tron, valakut, and decks with 0-2 basics, like death shadow, humans, and affinity. Not to mention the fact that those 5 decks take up around 25% of the meta game.

MVP12, I like the ideas, but for budget reasons, would there be any detriment in cutting 2 inkmoth rather than blinkmoth?

MVP12, a fun Idea that I could try is run Blightsteel Colossus and Shape Anew as my other 4 copies of Polymorph.

MVP12, after testing a few games with this list, my deck is still very vulnerable to Liliana of the Veil. I may need a way to get around her. Maybe Unsubstantiate because it is so versatile?

PS: sorry for the string of comments

if lily is a big threat, could try a Pithing Needle to stop it.