52 cards where the cards aren’t reprints and the card is tagged “counterspell-ability”

Siren Stormtamer (Ixalan #79)
Sublime Epiphany (Core Set 2021 #74)
Disallow (Aether Revolt #31)
Not of This World (Rise of the Eldrazi #8)
Ertai Resurrected (Dominaria United #199)
Tishana's Tidebinder (The Lost Caverns of Ixalan #81)
Overcharged Amalgam (Innistrad: Crimson Vow #71)
Tale's End (Core Set 2020 #77)
Diffusion Sliver (Magic 2015 #50)
Unsettled Mariner (Modern Horizons #216)
Green Slime (Commander Legends: Battle for Baldur's Gate #680)
Voidslime (Dissension #137)
Kira, Great Glass-Spinner (Betrayers of Kamigawa #40)
Verdant Command (Modern Horizons 2 #182)
Defabricate (The Brothers' War #45)
Nimble Obstructionist (Hour of Devastation #40)
Stifle (Scourge #52)
Whirlwind Denial (Theros Beyond Death #81)
Trickbind (Time Spiral #88)
Repudiate // Replicate (Ravnica Allegiance #227)
Brokers Confluence (New Capenna Commander #68)
Frost Titan (Magic 2011 #55)
Emerald Dragon // Dissonant Wave (Commander Legends: Battle for Baldur's Gate #229)
Deny the Witch (Warhammer 40,000 Commander #116)
Kadena's Silencer (Commander 2019 #8)
Mirrorshell Crab (Kamigawa: Neon Dynasty #63)
Strict Proctor (Strixhaven: School of Mages #33)
Adric, Mathematical Genius (Doctor Who #33)
Summary Dismissal (Eldritch Moon #75)
Sister of Silence (Warhammer 40,000 Commander #26)
Consign to Memory (Modern Horizons 3 #54)
Azorius Guildmage (Dissension #141)
Rimewind Cryomancer (Coldsnap #43)
Bind (Invasion #182)
Voidmage Husher (Time Spiral #92)
Amulet of Safekeeping (Core Set 2019 #226)
Glyph Keeper (Amonkhet #55)
Teferi's Response (Invasion #78)
Diplomatic Escort (Mercadian Masques #74)
Squelch (Champions of Kamigawa #92)
Interdict (Tempest #69)
Brown Ouphe (Ice Age #228)
Ayesha Tanaka (Legends #220)
Ouphe Vandals (Fifth Dawn #90)
Rust (Legends #203)
Shimmering Glasskite (Betrayers of Kamigawa #51)
Jetting Glasskite (Betrayers of Kamigawa #38)
A-Emerald Dragon // A-Dissonant Wave (Alchemy Horizons: Baldur's Gate #A-210)
Bind // Liberate (Mystery Booster Playtest Cards 2019 #88)
Flavor Judge (Unsanctioned #4)
Glyph Keeper (Amonkhet Tokens #5)
Mysterious Confluence (Unknown Event #RC05a)

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