21 cards where the text includes “learn” and the set is “stx”

Dream Strix (Strixhaven: School of Mages #42)
Gnarled Professor (Strixhaven: School of Mages #133)
Poet's Quill (Strixhaven: School of Mages #82)
Retriever Phoenix (Strixhaven: School of Mages #113)
Sparring Regimen (Strixhaven: School of Mages #29)
Academic Dispute (Strixhaven: School of Mages #91)
Divide by Zero (Strixhaven: School of Mages #41)
Eyetwitch (Strixhaven: School of Mages #70)
Igneous Inspiration (Strixhaven: School of Mages #107)
Overgrown Arch (Strixhaven: School of Mages #139)
Professor of Symbology (Strixhaven: School of Mages #24)
Arcane Subtraction (Strixhaven: School of Mages #36)
Cram Session (Strixhaven: School of Mages #170)
Enthusiastic Study (Strixhaven: School of Mages #99)
Field Trip (Strixhaven: School of Mages #131)
First Day of Class (Strixhaven: School of Mages #102)
Guiding Voice (Strixhaven: School of Mages #19)
Hunt for Specimens (Strixhaven: School of Mages #73)
Pop Quiz (Strixhaven: School of Mages #49)
Rise of Extus (Strixhaven: School of Mages #226)
Study Break (Strixhaven: School of Mages #34)

This search is finished. Now the real work can begin.