28 cards where the text includes “hexproof” and the colors is W and (the card is available on Paper)

Aegis of the Gods (Journey into Nyx #1)
Akroma, Vision of Ixidor (Commander Legends #2)
Angelic Overseer (Innistrad #3)
Beaming Defiance (Strixhaven: School of Mages #9)
Blacksmith's Skill (Modern Horizons 2 #6)
Blossoming Calm (Modern Horizons 2 #7)
Deification (March of the Machine: The Aftermath #2)
Enduring Angel // Angelic Enforcer (Innistrad: Midnight Hunt #17)
Enduring Angel // Angelic Enforcer (Innistrad: Midnight Hunt #17)
Essence of Antiquity (Murders at Karlov Manor #15)
Everybody Lives! (Doctor Who #18)
Family Reunion (The Lost Caverns of Ixalan #13)
Imperial Mask (Future Sight #23)
Invasion of Gobakhan // Lightshield Array (March of the Machine #22)
Invasion of Gobakhan // Lightshield Array (March of the Machine #22)
Karametra's Blessing (Theros Beyond Death #26)
Keen-Eared Sentry (Adventures in the Forgotten Realms #22)
Knight of Grace (Dominaria #23)
Leonin Abunas (Double Masters #21)
Leyline of Sanctity (Core Set 2020 #26)
Loran's Escape (The Brothers' War #14)
Metropolis Reformer (March of the Machine: The Aftermath #4)
Nine Lives (Core Set 2021 #28)
Odric, Lunarch Marshal (Dominaria United Commander #103)
Shalai, Voice of Plenty (Dominaria #35)
Skrelv, Defector Mite (Phyrexia: All Will Be One #33)
Spirit of the Hearth (Commander 2017 #73)
Sungold Sentinel (Innistrad: Midnight Hunt #37)
Surge of Salvation (March of the Machine #41)
Teyo, the Shieldmage (War of the Spark #32)

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