Here are the most valuable, using TCGPlayer's Market Value
Once Pollywog Prodigy's last ability has triggered, it doesn't matter what happens to Pollywog Prodigy after that
Its flash also means you can play it reactively, surprising your opponents and maintaining tempo all game
When nearly half the players at the highest level of competition are on the same deck, the format is fundamentally broken
Now when it comes to a binder vs a box, the biggest factor you have to consider is the amount of movement and management other traders have to engage with when they trade with you
You can quite easily end up casting big flashy spells for just (3) mana, which, when youre also exiling that spell so they cant get it back, makes for quite a tempo swing