23 cards where the card types include “creature” and the card types include “gorgon” and (it’s restricted in Vintage or it’s legal in Vintage)

Archetype of Finality (Born of the Gods #58)
Arisen Gorgon (Core Set 2019 #292)
Damia, Sage of Stone (Commander Anthology Volume II #2)
Gorgon Recluse (Time Spiral Remastered #117)
Hythonia the Cruel (Theros #91)
Infernal Medusa (Legends #108)
Keepsake Gorgon (Conspiracy: Take the Crown #141)
Korozda Gorgon (Dragon's Maze #78)
Loathsome Curator (Modern Horizons 2 #91)
Masked Gorgon (Judgment #69)
Persuasive Interrogators (Murders at Karlov Manor #98)
Pharika's Mender (Conspiracy: Take the Crown #205)
Pharika's Spawn (Theros Beyond Death #112)
Pitiless Gorgon (Ravnica: Clue Edition #203)
Rattleback Apothecary (Outlaws of Thunder Junction #100)
Reaper of the Wilds (Duel Decks: Jace vs. Vraska #63)
Sisters of Stone Death (Ravnica: City of Guilds #231)
Undercity Eliminator (Murders at Karlov Manor #108)
Venomous Hierophant (Ravnica: Clue Edition #125)
Visara the Dreadful (Eternal Masters #114)
Vraska's Finisher (War of the Spark #112)
Vraska, the Silencer (Outlaws of Thunder Junction #237)
Xathrid Gorgon (Magic 2013 #118)

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