35 cards where the text includes “devoid” and the color identity ≤ U and (the card is available on Paper)

Abstruse Interference (Oath of the Gatewatch #40)
Adverse Conditions (Battle for Zendikar #54)
Benthic Anomaly (Modern Horizons 3 Commander #46)
Benthic Infiltrator (Battle for Zendikar #55)
Blinding Drone (Oath of the Gatewatch #41)
Corrupted Crossroads (Oath of the Gatewatch #169)
Corrupted Shapeshifter (Modern Horizons 3 #56)
Cryptic Cruiser (Battle for Zendikar #56)
Cultivator Drone (Oath of the Gatewatch #42)
Deepfathom Skulker (Oath of the Gatewatch #43)
Depth Defiler (Modern Horizons 3 #58)
Dimensional Infiltrator (Oath of the Gatewatch #44)
Drowner of Hope (Battle for Zendikar #57)
Eldrazi Skyspawner (Battle for Zendikar #58)
Emrakul's Messenger (Modern Horizons 3 #61)
Gravity Negator (Oath of the Gatewatch #45)
Hope-Ender Coatl (Modern Horizons 3 #64)
Horribly Awry (Battle for Zendikar #59)
Incubator Drone (Battle for Zendikar #60)
Kozilek's Unsealing (Modern Horizons 3 #65)
Mist Intruder (Battle for Zendikar #61)
Murk Strider (Battle for Zendikar #62)
Oracle of Dust (Battle for Zendikar #63)
Petrifying Meddler (Modern Horizons 3 #66)
Prophet of Distortion (Oath of the Gatewatch #46)
Ruination Guide (Battle for Zendikar #64)
Salvage Drone (Battle for Zendikar #65)
Slip Through Space (Oath of the Gatewatch #47)
Spell Shrivel (Battle for Zendikar #66)
Thought Harvester (Oath of the Gatewatch #48)
Tide Drifter (Battle for Zendikar #67)
Ugin's Binding (Modern Horizons 3 #76)
Ulamog's Reclaimer (Battle for Zendikar #68)
Unfathomable Truths (Modern Horizons 3 #77)
Void Shatter (Oath of the Gatewatch #49)

Their mind whirled with grand plans, never thinking of what might happen if they got to the end of the list.