Very similar to my deck

I would recommend running some Putrefy

your deck is nice, but focuses more on counters and let say brute force :) I prefer more direct threat via Dying Wish or Sanguine Bond . Anyway Putrefy might be a good choice when dealing with creatures with regenerate however i believe playing 4x Devour Flesh is sufficient. The other thing is heavy artifact based deck which in current standard is not too frequent. Enchantments are more common and in this case I usually use my side with Thoughtseize and Fade into Antiquity against pesky gods :)

After FNM mixed results i did some changes, basically moving Thoughtseize as universal removal to the main deck