Lithoform Blight - Sure, you could just Ghost Quarter that Cabal Coffers
Roalesk, Apex Hybrid should rise despite having to fight with a ton of other similar cards because lots of decks are good at putting +1/+1 counters on creatures, but Roalesk does the same with Planeswalkers and proliferating a ton with Planeswalkers in a deck with Doubling Season means you can so things no Simic deck before has done nearly as well
Theres some obvious self-synergy there, but you also get an extra counter on something when you cast a non-creature spell
6 - City Pigeon Often treated poorly, pigeons are actually smart, loving creatures who humans abandoned after they were no longer needed
I want you to tell me right now if when building your deck, the ratio of even-Cost cards versus odd-Cost cards is ever something you've considered outside of Gyruda, Doom of Depths or Obosh, the Preypiercer, of which Void Winnower predates both of these cards by 5 years