What's new since yesterday's build (only a couple of tweaks, but they've made a big impact): 

• Main Deck
  • +2 Season of Growth
    
    • This card is OP in this deck. It's absolutely insane how much value you generate. Feather already wanted you to cast cantrips on your creatures, this card generously rewards you for doing so. You scry, you draw, you pick from a billion cards to execute the perfect gameplan. Do you need to fix your mana? Do you need a creature to cast your spells on? Do you need spells to cast on your creatures? We have it all for you with Season of Growth. If you're playing Naya Feather this is one of the best cards in your deck. The most ideal set up is to play a creature on Turn 2, Season of Growth + Cantrip on Turn 3 allowing to secure your 4th landrop or play feather and samut sprint or hold open protection.
  • -1 Reckless Rage
    • Feels kinda wrong to go lower than 3, but we don't need as many now that we have Season of Growth. Still have our bases covered with Domri's Ambush (Domri's Ambush on Tenth District Legionaire still deals 4 damage) Perhaps this may find a home in the sideboard later.
  • -1 Samut's Sprint
    
    • Don't need as many now that we have Season of Growth.
• Sideboard
  • -2 Sheltering Light
    • I haven't brought this in once. Gods Willing and Veil of Summer do the trick just fine.
  • -2 Knight of Autumn
    • Also haven't had a reason to bring in this, there's just not a lot of enchantments lately. I'm interested to see what happens when the meta settles and some of the previously popular archetypes come back in full force (Esper Control and RDW are MIA and Nexus Reclaimation is dead)
  • +1 Lava Coil
    •  Not sure if this is the right choice to go up or down. Haven't seen a lot of good targets recently that couldn't just be handled with Domri's Ambush or Reckless Rage. Really haven't seen any Phoenixes, but Dreadhorde Butcher did annhilate me without an answer.
  • +1 Deafening Clarion
    
    • Vampires, Elementals and Bant Ramp hate this. Can't afford to stay at 2 copies despite having Season of Growth. We need this on turn 3.
  • +2 Prison Realm
    
    • This is a stab at trying to solve the problem we are having with big creatures.
• Potential Next Steps/New Things to Try
  • One of the biggest weaknesses of the deck is our difficulty dealing with bigass creatures or high loyalty planeswalkers. The best strategy we have right now is to Collision//Colossus + Domri's Ambush for 4 mana (yikes). This is really shitty if we're doing this without Feather or Arcanist. However we can snipe Lyra, Hellkite, and Krasis with Colission (also crappy because it won't recurr through Feather). It's unclear to me what the best answer is to these threats. Here's some ideas:
    • Ixalan's Binding -> expensive/too late, but shuts down key cards including non-creatures, non-planeswalkers
    • Prison Realm -> slightly cheaper, slightly less flexible, scry (like we need more of it)
    • Baffling End -> real cheap, only creature removal though and they have to be 3 CMC or less which probably doesn't solve our problem
    • Healing Grace -> we stall, we make it easier to block big guys
    • Take Vengeance -> alright I'm clearly desperate enough to consider this
  • If I'm bringing in Tocatli Honor Guard, it feels like I have to take out Season of Growth. I'm not sure if Tocatli is worth it. The only matchup where it seems to be a serious issue is with the explore package. Everything else could be solved with the protection tricks like Sheltering Light, Gods Willing and Veil of Summer
  • Really haven't been giving Thrash // Threat a chance. I might try doing a 2-2 split between the two different cards to feel out the difference.
    • Domri's Ambush
      • Pros
        • +1/+1
        • Both Dreadhorde Arcanist and Fether can recur it
      • Cons
        • Sorcery Speed
        • RG casting cost
    • Thrash // Threat
      • Pros
        • More flexible casting cost
        • Instant speed, allowing you to cast on your turn AND their turn if you have the mana and feather out
        • If you need it, you can make a 4/4 trampler for 4 mana
      • Cons
        • Can't be recurred through Dreadhorde Arcanist