50 cards where the text includes “clue”

Academy Manufactor (Outlaws of Thunder Junction Commander #251)
Alquist Proft, Master Sleuth (Murders at Karlov Manor #185)
Armed with Proof (Murders at Karlov Manor Commander #9)
Astrid Peth (Doctor Who #11)
Azorius Cluestone (Dragon's Maze #136)
Boros Cluestone (Commander Anthology Volume II #175)
Briarbridge Patrol (Shadows over Innistrad #195)
Case of the Pilfered Proof (Murders at Karlov Manor #9)
Confront the Unknown (Shadows over Innistrad #198)
Curious Cadaver (Murders at Karlov Manor #194)
Daring Sleuth // Bearer of Overwhelming Truths (Shadows over Innistrad #54)
Daring Sleuth // Bearer of Overwhelming Truths (Shadows over Innistrad #54)
Dimir Cluestone (Dragon's Maze #138)
Excogitator Sphinx (Alchemy: Murders at Karlov Manor #6)
Fae Offering (Modern Horizons 2 #158)
Five Hundred Year Diary (Doctor Who #42)
Fleeting Memories (Shadows over Innistrad #62)
Golgari Cluestone (Dragon's Maze #139)
Graf Mole (Murders at Karlov Manor Commander #170)
Gruul Cluestone (Dragon's Maze #140)
Guess Your Fate (Unfinity #215a)
Havengul Laboratory // Havengul Mystery (Universes Within #9)
Havengul Laboratory // Havengul Mystery (Universes Within #9)
In Too Deep (New Capenna Commander #27)
Izzet Cluestone (Dragon's Maze #141)
Jenny Flint (Doctor Who #136)
Lazav, Wearer of Faces (Murders at Karlov Manor #216)
Lonis, Cryptozoologist (Murders at Karlov Manor Commander #215)
Lonis, Genetics Expert (Ravnica: Clue Edition #37)
Madame Vastra (Doctor Who #142)
Martha Jones (Doctor Who #48)
Merchant of Truth (Murders at Karlov Manor Commander #11)
Orzhov Cluestone (Commander 2015 #261)
Overencumbered (Fallout #18)
Persuasive Interrogators (Murders at Karlov Manor #98)
Piper Wright, Publick Reporter (Fallout #36)
Rakdos Cluestone (Dragon's Maze #143)
Selesnya Cluestone (Dragon's Maze #144)
Senator Peacock (Ravnica: Clue Edition #2)
Simic Cluestone (Dragon's Maze #145)
Slayer's Bounty (Alchemy: Innistrad #10)
Tamiyo's Journal (Shadows over Innistrad #265)
Tangletrove Kelp (Murders at Karlov Manor Commander #24)
Teysa, Opulent Oligarch (Murders at Karlov Manor #234)
The Fugitive Doctor (Doctor Who #130)
The Third Doctor (Doctor Who #162)
Thorough Investigation (Forgotten Realms Commander #12)
Tireless Tracker (Murders at Karlov Manor Commander #190)
Transmutation Font (The Big Score #28)
Ulvenwald Mysteries (Murders at Karlov Manor Commander #193)
Unshakable Tail (Murders at Karlov Manor Commander #29)
Woodland Investigation (Alchemy: Murders at Karlov Manor #21)

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