12 cards where the text includes “can't be blocked” and the colors is W and it’s legal in Modern

Delney, Streetwise Lookout (Murders at Karlov Manor #12)
Cheeky House-Mouse // Squeak By (Wilds of Eldraine #7)
Skrelv, Defector Mite (Phyrexia: All Will Be One #33)
Sungold Sentinel (Innistrad: Midnight Hunt #37)
Hedgewitch's Mask (Innistrad: Midnight Hunt #23)
Amrou Seekers (Time Spiral Remastered #2)
Beloved Princess (Throne of Eldraine #7)
Shield Mare (Core Set 2019 #37)
Audacious Infiltrator (Aether Revolt #7)
Kor Castigator (Battle for Zendikar #35)
Azorius Herald (Commander 2013 #6)
Goldmeadow Dodger (Lorwyn #16)

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