Hello! I looked over the Green / Blue deck and like what I saw. It seems like the basic idea is to use
Looter il-Kor and pump spells to force damage through while controling the board with counter magic and shroud protection. I have a few suggestions that should make the deck a lot more consistent (I'll also stick to cards that aren't insanely expensive like
Noble Hierarch).
Having only 4 Looter's makes the overall plan a bit chalenging. thankfully, the newly printed
Wharf Infiltrator does basically the same thing. He has skulk instead of Shadow, so he's not as evasive, but you can always buff him after declare blocks if he's unblocked. His other ability is a bit confusing, but it basically says if you don't want a creature and discard it, you get a 3/2 token. Also note that it says ANYTIME a creature is discarded, so even off
Looter il-kor, you can get the tokens.
Another powerful option for this deck would be
Altered Ego. In general, You'll probably make copies of Looter or Wharf, but being able to dump all the extra mana from the mana creatures means you can make a huge uncounterable Looter.
To make room for these guys you'll need 8 cuts. the easiest thing to do would be to move the 4
Spectral Force insto the sideboard (it's insanely good against block, but otherwise, just meh). The last 4 could the set of
Yavimaya Dryad. They aren't bad, but they don't really follow the theme you seem to be setting. Plus, Modern is such a fast format that a 3 mana creature who just finds a land is a little lackluster, especially when your curve tops out at 4.
I hope you found this helpful! If you have futher questions, please don;t hesitate to ask. good luck and Happy Hunting