30 cards where the text includes “copy target instant or sorcery spell”

Dualcaster Mage (Commander 2021 #165)
Dual Casting (Avacyn Restored #133)
Echo Mage (Commander 2013 #43)
Expansion // Explosion (Ravnica Remastered #243)
Fork (Masters Edition IV #116)
Fury Storm (Commander 2018 #22)
Gandalf the Grey (The Lord of the Rings: Tales of Middle-earth #207)
Geistblast (Shadows over Innistrad #160)
Increasing Vengeance (Commander 2019 #147)
Insidious Will (Kaladesh #52)
League Guildmage (Double Masters 2022 #241)
Lithoform Engine (Zendikar Rising #245)
Lutri, the Spellchaser (Ikoria: Lair of Behemoths #227)
Mirrorpool (Commander Masters #1010)
Mirror Sheen (Eventide #105)
Mischievous Quanar (Scourge #42)
Narset's Reversal (War of the Spark #62)
Naru Meha, Master Wizard (Commander 2021 #124)
Nivix Guildmage (Commander 2017 #186)
Refuse // Cooperate (Commander 2019 #199)
Reiterate (Time Spiral Remastered #182)
Resonance Technician (Ravnica: Clue Edition #41)
Reverberate (Magic 2013 #145)
Rootha, Mercurial Artist (Strixhaven: School of Mages #227)
Sigil Tracer (Morningtide #49)
Stella Lee, Wild Card (Outlaws of Thunder Junction Commander #3)
Twincast (Magic 2010 #78)
Twinning Staff (New Capenna Commander #383)
Uyo, Silent Prophet (Commander 2013 #64)
Very Cryptic Command (Unstable #49c)

Their mind whirled with grand plans, never thinking of what might happen if they got to the end of the list.