35 cards where the illustration contains “agency-barrier-ward”

Aftermath Analyst (Murders at Karlov Manor #148)
Agrus Kos, Spirit of Justice (Murders at Karlov Manor #184)
Coerced to Kill (Murders at Karlov Manor #192)
Commercial District (Murders at Karlov Manor #324)
Crowd-Control Warden (Murders at Karlov Manor #193)
Detective's Satchel (Murders at Karlov Manor #196)
Elegant Parlor (Murders at Karlov Manor #325)
Etrata, Deadly Fugitive (Murders at Karlov Manor #200)
Evidence Examiner (Murders at Karlov Manor #201)
Excogitator Sphinx (Alchemy: Murders at Karlov Manor #6)
Follow the Bodies (Murders at Karlov Manor Commander #23)
Forensic Gadgeteer (Murders at Karlov Manor #57)
Forensic Gadgeteer (Murders at Karlov Manor #342)
Hedge Maze (Murders at Karlov Manor #326)
Homicide Investigator (Murders at Karlov Manor #86)
Homicide Investigator (Murders at Karlov Manor #343)
Hotshot Investigators (Murders at Karlov Manor #60)
Lush Portico (Murders at Karlov Manor #327)
Makeshift Binding (Murders at Karlov Manor #23)
Makeshift Binding (Murders at Karlov Manor #290)
Meticulous Archive (Murders at Karlov Manor #328)
Nelly Borca, Impulsive Accuser (Murders at Karlov Manor Commander #4)
On the Trail (Murders at Karlov Manor Commander #39)
Perimeter Enforcer (Murders at Karlov Manor #31)
Raucous Theater (Murders at Karlov Manor #329)
Scene of the Crime (Murders at Karlov Manor #267)
Scour the Scene (Alchemy: Murders at Karlov Manor #27)
Shadowy Backstreet (Murders at Karlov Manor #330)
Sharp-Eyed Rookie (Murders at Karlov Manor #176)
Sleuth Instructor (Alchemy: Murders at Karlov Manor #2)
Tenth District Hero (Murders at Karlov Manor #34)
Thundering Falls (Murders at Karlov Manor #331)
Torch the Witness (Murders at Karlov Manor #146)
Undercity Sewers (Murders at Karlov Manor #332)
Underground Mortuary (Murders at Karlov Manor #333)

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