21 cards where the card types include “faerie” and the text includes “flash” and the color identity ≤ BU

Brazen Borrower // Petty Theft (Throne of Eldraine #39)
Dewdrop Spy (Morningtide #30)
Faerie Duelist (Ravnica Allegiance #39)
Faerie Harbinger (Lorwyn #61)
Faerie Invaders (Duel Decks: Speed vs. Cunning #57)
Faerie Mastermind (March of the Machine #58)
Faerie Vandal (Streets of New Capenna #44)
Inspired Sprite (Morningtide #37)
Malleable Impostor (Wilds of Eldraine Commander #10)
Mistbind Clique (Lorwyn #75)
Nymris, Oona's Trickster (Commander Legends #288)
Obyra, Dreaming Duelist (Wilds of Eldraine #210)
Pestermite (Modern Masters #59)
Quickling (Magic 2015 #76)
Scion of Oona (Modern Masters #63)
Sentinels of Glen Elendra (Lorwyn #84)
Spellstutter Sprite (Modern Masters #65)
Stingblade Assassin (Wilds of Eldraine #109)
Talion's Throneguard (Alchemy: Wilds of Eldraine #5)
Vendilion Clique (Masters 25 #76)
Wydwen, the Biting Gale (Commander 2020 #235)

It is the moment of discovery, the triumph of the mind, and the end of these results.