Scrib Nibblers If you havent heard of this card before, I wouldnt be surprised
The question for building the deck is if we want to go full mill as a win condition or just some incidental milling as a method of getting creatures into the graveyard to regrow with Captain Nghathrod
3 is a way to increase damage, since in addition to evasion, the static ability can accumulate a lot of damage on the opponent even if the creatures on the battlefield aren't attacking
The most popular cards are ones that work well with the history of Magic cards like Multiversal Passage, Spider-Ham, Peter Porker, and Spider-Punk
Add non-English printings across the ten languages Wizards supports, and you are looking at hundreds of thousands of individual card versions
Exotic Orchard is also a good inclusion since youre running four colors and it's very unlikely youll ever play against three mono-green decks