18 cards where the mana value = 3 and the power = 3 and the toughness = 4 and the text includes “flying”

Aerial Surveyor (Neon Dynasty Commander #5)
A-Nadu, Winged Wisdom (Modern Horizons 3 #A-193)
Bazaar Trademage (Modern Horizons #41)
Faithful Squire // Kaiso, Memory of Loyalty (Betrayers of Kamigawa #3)
Feather, the Redeemed (War of the Spark #197)
Fettergeist (Avacyn Restored #52)
Goro-Goro and Satoru (March of the Machine Commander #445)
Harried Artisan // Phyrexian Skyflayer (March of the Machine #143)
Harried Artisan // Phyrexian Skyflayer (March of the Machine #143)
Illusionary Servant (Magic 2010 #57)
Nadu, Winged Wisdom (Modern Horizons 3 #193)
Riptide Chimera (Journey into Nyx #48)
Rogue Skycaptain (Masters Edition II #149)
Runo Stromkirk // Krothuss, Lord of the Deep (Innistrad: Crimson Vow #246)
Runo Stromkirk // Krothuss, Lord of the Deep (Innistrad: Crimson Vow #246)
Saint Traft and Rem Karolus (March of the Machine Commander #9)
Serendib Efreet (Jumpstart #175)
Skyline Savior (Alchemy: New Capenna #3)
Stitched Drake (Ultimate Masters #72)
Wormfang Drake (Dominaria Remastered #74)

The message was clear to Sorin—time to search for something else.