Like Delver of Secrets, Vendilion Clique is good in traditional control decks as well as the more tempo-based brews
Ultimately we need to know whether the card can a) find a semi-permanent home in at least a T1.5 deck and b) how many copies they want to run
For collectors, however, the set also has has a scene box, six borderless cards that form a single image, selling for $41.99
On the other hand, while foil drop rates in normal Standard sets have increased recently, in the past, you'd open a foil mythic about one in every three boxes (and this might be being slightly generous), which means to open an original foil Theros printing of Heliod, God of the Sun, you'd have to open roughly 45 boxes of Theros, which means getting 50,000 copies would take 2,250,000 Theros booster boxes, which at $100 would add up to $225 million
In fact, before the Affinity banning, and discounting the weirdness of the Zuran Orb situation, every single banning in Standard involved a combo-based card
Rarity in Magic has evolved from a printing quirk to a sophisticated tool for game balance and, now, a multi-layered system driving a vibrant secondary market