31 cards where the text includes “hexproof” and the card types include “instant” and the color identity ≤ GU

Blinding Fog (Ixalan #177)
Blossoming Defense (Kaladesh #146)
Bombadil's Song (The Lord of the Rings: Tales of Middle-earth #154)
Dive Down (Ixalan #53)
Dread Linnorm // Scale Deflection (Commander Legends: Battle for Baldur's Gate #225)
Fleeting Reflection (Outlaws of Thunder Junction #49)
Gaea's Gift (The Brothers' War #182)
Glint (Dragons of Tarkir #55)
Hapatra's Mark (Amonkhet #169)
Heroic Intervention (Commander Masters #295)
Lazotep Plating (War of the Spark #59)
Legolas's Quick Reflexes (Tales of Middle-earth Commander #493)
Mizzium Skin (Return to Ravnica #45)
Mutational Advantage (Fallout #111)
Ranger's Guile (Core Set 2021 #199)
Royal Treatment (Wilds of Eldraine #183)
Shell Shield (Zendikar Rising #79)
Sheltering Word (Avacyn Restored #192)
Shore Up (Dominaria United #64)
Silkguard (Neon Dynasty Commander #29)
Simic Charm (Commander Legends #451)
Smuggler's Surprise (Outlaws of Thunder Junction #180)
Snakeskin Veil (Outlaws of Thunder Junction #181)
Tamiyo's Safekeeping (Kamigawa: Neon Dynasty #211)
Tyvar's Stand (Phyrexia: All Will Be One #190)
Veil of Summer (Core Set 2020 #198)
Water Wings (Wilds of Eldraine #77)
Wild Shape (Adventures in the Forgotten Realms #212)
Woodcutter's Grit (Eldritch Moon #179)
You See a Guard Approach (Adventures in the Forgotten Realms #85)
Yuan-Ti Scaleshield (Alchemy Horizons: Baldur's Gate #71)

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