While weve thoroughly explained the theory of what makes Flying creatures so powerful, it turns out that theyve also proven to be quite strong in a variety of formats with a wide range of power levels
The format has sped up a lot over the past two decades, and there are plenty of great noncreature cards that cost less than four mana, but I'd also miss out on a lot of cards that are well worth running
Gitaxian Probe + Mishra's Bauble Let's put it this way: A cantrip that you can pay for with life rather than mana, and tells you what your foe's up to, is so fundamentally broken that Gitaxian Probe is banned in Modern and Legacy, and it's also restricted in Vintage, where it's no stranger to top-tier decks
Invasion of Segovia is a perfect example: It creates Kraken tokens, so its already synergistic, and it makes fodder for Jalira, but its not a creature card, so this otherwise subpar hit wont ever be the card you find with Jaliras polymorph ability
Grumgully, the Generous is handing them out like candy