This is a subset from Innistrad: Crimson Vow.
The codename for Innistrad: Crimson Vow ("Clubs") deviates from the regular alphabetic sports naming convention, because the set was conceived after the following codenames were already established. The set was announced with the provisional name Innistrad: Vampires on September 1, 2020. Based on the registration of public domains on September 18, 2020, the final name was speculated to be Innistrad: Crimson Vow. This was finally confirmed on March 18, 2021.
Both Innistrad sets are full size sets and they are both are Standard-legal. Although they come out only two months apart in the latter part of 2021, R&D is not changing how many sets are being added to Standard during the rotation window, but just shifted the timing around slightly. The sets are designed to draft by themselves, but they also will draft well together. The two sets are synergistic and overlap in spots. This will be further explored as the sets are reprinted in the Innistrad: Double Feature set that will be released in early 2022.
Innistrad: Crimson Vow contains 277 regular cards (100 commons, 83 uncommons, 64 rares, 20 mythic rares, 10 basic lands) and includes randomly inserted premium versions of all cards. The regular cards include 10 "Eternal Night" basic lands. Each type has two different pieces of black-and-white art with colored accents.