20 cards where the illustration contains “ravnica-guild-cha...”

Agrus Kos, Wojek Veteran (Ravnica: City of Guilds #190)
Circu, Dimir Lobotomist (Ravnica: City of Guilds #196)
Emmara Tandris (Dragon's Maze #68)
Exava, Rakdos Blood Witch (Dragon's Maze #69)
Experiment Kraj (Dissension #110)
Isperia the Inscrutable (Dissension #114)
Lavinia of the Tenth (Dragon's Maze #80)
Lyzolda, the Blood Witch (Dissension #117)
Melek, Izzet Paragon (Dragon's Maze Promos #84)
Mirko Vosk, Mind Drinker (Dragon's Maze #85)
Ruric Thar, the Unbowed (Dragon's Maze #99)
Savra, Queen of the Golgari (Ravnica: City of Guilds #225)
Tajic, Blade of the Legion (Dragon's Maze #107)
Teysa, Envoy of Ghosts (Dragon's Maze #108)
Teysa, Orzhov Scion (Guildpact #134)
Tibor and Lumia (Guildpact #135)
Tolsimir Wolfblood (Ravnica: City of Guilds #236)
Ulasht, the Hate Seed (Guildpact #136)
Varolz, the Scar-Striped (Dragon's Maze #112)
Vorel of the Hull Clade (Dragon's Maze #115)

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