22 cards where the illustration contains “bolas-staff”

Angel of the God-Pharaoh (Hour of Devastation #4)
Augur of Bolas (Magic 2013 #43)
Aven Initiate (Amonkhet Tokens #3)
Aven Wind Guide (Amonkhet Tokens #4)
Domri, Anarch of Bolas (War of the Spark #191)
Domri, Anarch of Bolas (War of the Spark #191★)
Dreadhorde Arcanist (War of the Spark #125)
Eternal Skylord (War of the Spark #49)
Forbid (Amonkhet Invocations #33)
Gleaming Overseer (War of the Spark #198)
Herald of the Dreadhorde (War of the Spark #93)
Invade the City (War of the Spark #201)
Invading Manticore (War of the Spark #134)
Lazotep Chancellor (Modern Horizons 2 #203)
Lazotep Chancellor (Modern Horizons 2 #369)
Neheb, Dreadhorde Champion (War of the Spark #140)
Threads of Disloyalty (Amonkhet Invocations #37)
Wardscale Crocodile (War of the Spark #183)
Watchers of the Dead (Amonkhet #238)
Widespread Brutality (War of the Spark #226)
Zombie Army (War of the Spark Tokens #9)
Zombie Army (War of the Spark Tokens #10)

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