7 cards where (the text includes “lose hexproof”) or (the text includes “didn't have hexproof”)

Arcane Lighthouse (Commander Masters #985)
Archetype of Endurance (Born of the Gods #116)
Bonds of Mortality (Oath of the Gatewatch #128)
Detection Tower (Core Set 2019 #249)
Glaring Spotlight (Gatecrash #229)
Kaya, Bane of the Dead (War of the Spark #231)
Shadowspear (Theros Beyond Death #236)

It is the moment of discovery, the triumph of the mind, and the end of these results.