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
He has, what I think might be one of the best ways to win a multiplayer game of Magic: The Gathering Ive seen since Approach of the Second Sun
Add non-English printings across the ten languages Wizards supports, and you are looking at hundreds of thousands of individual card versions
The Goad side of the deck is also a bit of a let-down as Firkraag, Cunning Instigator's color identity doesn't include Black, ruling out many Goad deck auto-includes
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
Players who encounter this error are encouraged to either treat Glider Kids as if it's castable with blue mana or discard it and draw the next card