40 cards where (the card is available on Paper) and the flavor text contains “nicol”

Apex of Power (Forgotten Realms Commander #114)
Blood Reckoning (Magic 2013 #81)
Bristling Boar (Core Set 2019 #170)
Chandra's Defeat (Hour of Devastation #86)
Cinder Barrens (Commander 2019 #235)
Commence the Endgame (War of the Spark #45)
Conflux (From the Vault: Lore #3)
Costume Shop (Unfinity #206f)
Countersquall (Duel Decks: Ajani vs. Nicol Bolas #59)
Cower in Fear (Modern Masters 2017 #62)
Crush Dissent (War of the Spark #47)
Crux of Fate (Commander 2017 #107)
Doomfall (Hour of Devastation #62)
Dunes of the Dead (Outlaws of Thunder Junction Commander #291)
Font of Agonies (Ravnica Allegiance #74)
Fraying Omnipotence (Core Set 2019 #97)
Gideon's Defeat (Hour of Devastation #13)
Hour of Devastation (Hour of Devastation #97)
Imp's Mischief (Commander Masters #167)
In Bolas's Clutches (Dominaria #54)
Jace's Defeat (Hour of Devastation #38)
Liliana's Defeat (Hour of Devastation #68)
Magmaquake (Forgotten Realms Commander #133)
Mana Drain (Judge Gift Cards 2016 #2)
Merciless Eternal (Hour of Devastation #71)
Mindclaw Shaman (Magic 2013 #142)
Neheb, the Eternal (Murders at Karlov Manor Commander #158)
Nissa's Defeat (Hour of Devastation #123)
Null Elemental Blast (Modern Horizons 3 #12)
Open into Wonder (Zendikar Rising Commander #34)
Palladia-Mors, the Ruiner (Core Set 2019 #219)
Patient Rebuilding (Core Set 2019 #67)
Price of Betrayal (War of the Spark #102)
Rakka Mar (Commander Masters #247)
Slave of Bolas (Archenemy: Nicol Bolas #86)
Soul Manipulation (Zendikar Rising Commander #100)
Tormenting Voice (Dragons of Tarkir #163)
Tyrant's Scorn (War of the Spark #225)
Wasp of the Bitter End (Hour of Devastation #206)
Wit's End (Magic 2013 #117)

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