I see those saprolings skittering around the maybeboard.

You could take out the Seller of Songbirds and replace them with a Scion of Vitu-Ghazi and some other good etb effect like Captain of the Watch . I mean it seems your deck runs high costs and stalls long enough that you will get the mana for them

I would take out Seller of Songbirds and possibly Trostani's Summoner becauae of the high mana cost. Depending on how much money you wanna spend on this deck, you shold add some Thragtusk , Deadeye Navigator and Restoration Angel . A lot of your creatures already have flying so I'd also take out 1 or 2 Wingcrafter

Hey, I like the idea of this deck! I think it would only get better if you put in some Restoration Angel s and some Thistledown Liege s in the deck! Also some more gates and duel lands in the mana base would be a big help too.

I forgot Restoration Angel existed lol, I will definitely find copies of her. I didnt have much flying when i first made this deck, but since I do now, i probably dont need as many Wingcrafter .
Thragtusk , Deadeye Navigator , and Thistledown Liege all look like solid cards to put in this deck.
Thank you both for your suggestions :D.

I think your deck stalls enough that higher mana costs is not really an Issue, but you should be careful on doubling up expensive cards. Even though all the fanboys drool over Thragtusk and recommend it on every green deck, it does actually have some merit in this deck if you can flicker it enough. I like Sphinx of Uthuun , but perhaps something cheaper with more impact would be better suited, like Jace, Architect of Thought

You should start by dropping the lonely cards... like Luminate Primordial , which are usually not relevant due their low chance of appearance. Get cards with low to medium Converted Mana Cost (between 1 and 4), those will grant you victories... having too many 6+ CMC cards will bring only defeat. Also, some of your cards do not follow your main idea for the deck. After that, try to get menacing and efficient cards, like Lorescale Coatl , Winged Coatl , or Bant Sureblade , or Mystic Snake . After defining the creature cards you want, make a research looking for good instants if you want to play in your opponent's turn... sorceries won't do that trick. After doing that, repeat but for enchantments, sorceries and artifacts. And last, but not least, balance the lands according to color-proportions. Hope I helped... ask for further advice whenever you want. Cheers!

all the above are cards I would suggest too. One more card for sake of toughening up your creatures is maybe Collective Blessing , or maybe Finest Hour . Bant from Alara would make this deck explode in my opinion, Nulltread Gargantuan for example.

All the suggestions made sound great, but one thing I would add is to remove the Voyager Staff and Search for Tomorrow and throw in Cloudshift and Solemn Simulacrum . Other than that and the other suggestions made this deck looks fun :D

mmh well i feel you have too much going on to have any card reliability. But its really hard to give solid advice for cards except AEtherize for saving your life/ creatures maybe you should have scry if you want to get more card draw...what cards are your main pillars for this deck? then it would be easier to see how your deck is intended to work so i could recommend a good card or two lol