32 cards where (the text includes “choose” and the text includes “a” and the text includes “background”)

Abdel Adrian, Gorion's Ward (Commander Legends: Battle for Baldur's Gate #2)
Alora, Merry Thief (Commander Legends: Battle for Baldur's Gate #55)
Amber Gristle O'Maul (Commander Legends: Battle for Baldur's Gate #159)
Baeloth Barrityl, Entertainer (Commander Legends: Battle for Baldur's Gate #655)
Burakos, Party Leader (Commander Legends: Battle for Baldur's Gate #653)
Durnan of the Yawning Portal (Commander Legends: Battle for Baldur's Gate #657)
Ellyn Harbreeze, Busybody (Commander Legends: Battle for Baldur's Gate #16)
Erinis, Gloom Stalker (Commander Legends: Battle for Baldur's Gate #230)
Faceless One (Commander Legends: Battle for Baldur's Gate #1)
Gale, Waterdeep Prodigy (Commander Legends: Battle for Baldur's Gate #72)
Ganax, Astral Hunter (Commander Legends: Battle for Baldur's Gate #176)
Gut, True Soul Zealot (Commander Legends: Battle for Baldur's Gate #180)
Halsin, Emerald Archdruid (Commander Legends: Battle for Baldur's Gate #234)
Imoen, Mystic Trickster (Commander Legends: Battle for Baldur's Gate #77)
Jaheira, Friend of the Forest (Commander Legends: Battle for Baldur's Gate #237)
Karlach, Fury of Avernus (Commander Legends: Battle for Baldur's Gate #186)
Lae'zel, Vlaakith's Champion (Commander Legends: Battle for Baldur's Gate #29)
Livaan, Cultist of Tiamat (Commander Legends: Battle for Baldur's Gate #188)
Lulu, Loyal Hollyphant (Commander Legends: Battle for Baldur's Gate #32)
Rasaad yn Bashir (Commander Legends: Battle for Baldur's Gate #37)
Renari, Merchant of Marvels (Commander Legends: Battle for Baldur's Gate #90)
Safana, Calimport Cutthroat (Commander Legends: Battle for Baldur's Gate #143)
Sarevok, Deathbringer (Commander Legends: Battle for Baldur's Gate #144)
Shadowheart, Dark Justiciar (Commander Legends: Battle for Baldur's Gate #146)
Sivriss, Nightmare Speaker (Commander Legends: Battle for Baldur's Gate #148)
Skanos Dragonheart (Commander Legends: Battle for Baldur's Gate #255)
Vhal, Candlekeep Researcher (Commander Legends: Battle for Baldur's Gate #102)
Viconia, Drow Apostate (Commander Legends: Battle for Baldur's Gate #156)
Volo, Itinerant Scholar (Commander Legends: Battle for Baldur's Gate #103)
Wilson, Refined Grizzly (Commander Legends: Battle for Baldur's Gate #261)
Wyll, Blade of Frontiers (Commander Legends: Battle for Baldur's Gate #208)
Zellix, Sanity Flayer (Commander Legends: Battle for Baldur's Gate #652)

The message was clear to Sorin—time to search for something else.