34 cards where it’s legal in Modern and the rarity is equal to uncommon and the card has been printed exactly once and the USD price >= 3

Blowfly Infestation (Shadowmoor #58)
Chronomantic Escape (Future Sight #4)
Congregation at Dawn (Ravnica: City of Guilds #198)
Crumbling Ashes (Eventide #35)
Cut Down (Dominaria United #432)
Dark Deal (Fate Reforged #66)
Deepchannel Mentor (Shadowmoor #35)
Enthusiastic Mechanaut (Kamigawa: Neon Dynasty #509)
Experimental Confectioner (Wilds of Eldraine #314)
Fleshwrither (Future Sight #84)
Footsteps of the Goryo (Saviors of Kamigawa #68)
Grinding Station (Fifth Dawn #127)
Haywire Mite (The Brothers' War #199)
Hissing Miasma (Guildpact #51)
Liliana's Caress (Magic 2011 #103)
Locket of Yesterdays (Time Spiral #258)
Locust Miser (Saviors of Kamigawa #80)
Magnetic Theft (Fifth Dawn #74)
Malakir Rebirth // Malakir Mire (Zendikar Rising #111)
Malakir Rebirth // Malakir Mire (Zendikar Rising #111)
Mercy Killing (Shadowmoor #231)
Merrow Commerce (Lorwyn #72)
Mystic Speculation (Future Sight #41)
Nazgûl (The Lord of the Rings: Tales of Middle-earth #100)
Plumb the Forbidden (Strixhaven: School of Mages #81)
Psychic Corrosion (Core Set 2019 #68)
Psychotrope Thallid (Planar Chaos #137)
Quest for Renewal (Worldwake #110)
Screams from Within (Darksteel #52)
Seedguide Ash (Lorwyn #235)
Sheoldred's Edict (Phyrexia: All Will Be One #279)
Shuko (Betrayers of Kamigawa #159)
Thornbite Staff (Morningtide #145)
Treefolk Harbinger (Lorwyn #239)
Youthful Valkyrie (Kaldheim #382)

In the blink of an eye, they strode from deep snow to the end of this search.