15 cards where the text includes “constellation” and the color identity ≤ BW

Agent of Erebos (Journey into Nyx #59)
Archon of Sun's Grace (Commander Masters #814)
Boon of the Spirit Realm (Commander Masters #720)
Captivating Unicorn (Theros Beyond Death #6)
Daxos's Torment (Commander 2015 #18)
Doomwake Giant (Duskmourn: House of Horror Commander #138)
Dreadbringer Lampads (Commander 2015 #122)
Eidolon of Astral Winds (Foundations Jumpstart #2)
Favored of Iroas (Theros Beyond Death #15)
Grim Guardian (Journey into Nyx #73)
Harvestguard Alseids (Journey into Nyx #13)
Pious Wayfarer (Theros Beyond Death #32)
Skybind (Journey into Nyx #25)
Thoughtrender Lamia (Journey into Nyx #85)
Underworld Coinsmith (Commander 2015 #237)

It is the moment of discovery, the triumph of the mind, and the end of these results.