30 cards where the text includes “reveal” and the text includes “top card” and the colors is U

Alexander Clamilton (Unsanctioned #16)
Arbiter of the Ideal (Born of the Gods #31)
Aven Windreader (Tenth Edition #69)
Callous Deceiver (Champions of Kamigawa #53)
Conundrum Sphinx (Commander 2018 #84)
Counterbalance (Coldsnap #31)
Dakra Mystic (Journey into Nyx #35)
Delver of Secrets // Insectile Aberration (Innistrad: Midnight Hunt #47)
Delver of Secrets // Insectile Aberration (Innistrad: Midnight Hunt #47)
Djinn of Wishes (Commander 2018 #87)
Field of Dreams (Legends #55)
Frost Augur (Kaldheim #56)
Future Sight (Modern Horizons #53)
Haunting Imitation (Crimson Vow Commander #13)
Ink Dissolver (Morningtide #36)
Interpret the Signs (Commander Legends #75)
Jadzi, Oracle of Arcavios // Journey to the Oracle (Strixhaven: School of Mages #151)
Jadzi, Oracle of Arcavios // Journey to the Oracle (Strixhaven: School of Mages #151)
Magus of the Future (Time Spiral Remastered #75)
Mise (Unhinged #38)
Neurok Familiar (Mirrodin #43)
Psychic Battle (Invasion #68)
Psychic Network (Unglued #26)
Quest for Ula's Temple (Worldwake #35)
Shapeshifter's Marrow (Future Sight #58)
Skill Borrower (Shards of Alara #56)
S.N.E.A.K. Dispatcher (Unstable #43)
Storm Fleet Negotiator (The Lost Caverns of Ixalan Commander #78)
Swindler's Scheme (New Capenna Commander #88)
Vesuvan Drifter (March of the Machine: The Aftermath #10)
Waterspout Weavers (Morningtide #56)
Wizened Snitches (Ravnica: City of Guilds #75)

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