Murders at Karlov Manor Prerelease Promo Pack has no variants:
Explore this pack in Sealed.

Sheets

Sheet promo

At rate 1/80 (1.25%)
Analyze the Pollen
Anzrag's Rampage
Archdruid's Charm
Assassin's Trophy
Assemble the Players
Audience with Trostani
Aurelia, the Law Above
Axebane Ferox
Barbed Servitor
Blood Spatter Analysis
Case of the Crimson Pulse
Case of the Locked Hothouse
Case of the Ransacked Lab
Case of the Stashed Skeleton
Case of the Uneaten Feast
Commercial District
Connecting the Dots
Coveted Falcon
Cryptex
Cryptic Coat
Deadly Cover-Up
Doorkeeper Thrull
Doppelgang
Drag the Canal
Elegant Parlor
Ezrim, Agency Chief
Forensic Gadgeteer
Fugitive Codebreaker
Hedge Maze
Hide in Plain Sight
Homicide Investigator
Hunted Bonebrute
Ill-Timed Explosion
Illicit Masquerade
Izoni, Center of the Web
Judith, Carnage Connoisseur
Kellan, Inquisitive Prodigy
Krenko's Buzzcrusher
Krenko, Baron of Tin Street
Kylox, Visionary Inventor
Lamplight Phoenix
Lazav, Wearer of Faces
Leyline of the Guildpact
Lost in the Maze
Lush Portico
Meticulous Archive
Niv-Mizzet, Guildpact
No Witnesses
Officious Interrogation
Outrageous Robbery
Proft's Eidetic Memory
Pyrotechnic Performer
Raucous Theater
Reenact the Crime
Relive the Past
Shadowy Backstreet
Sharp-Eyed Rookie
Steamcore Scholar
Tenth District Hero
Teysa, Opulent Oligarch
Thundering Falls
Tolsimir, Midnight's Light
Treacherous Greed
Undercity Sewers
Underground Mortuary
Unyielding Gatekeeper
Warleader's Call
Wojek Investigator
Worldsoul's Rage
Yarus, Roar of the Old Gods
At rate 1/160 (0.63%)
Agrus Kos, Spirit of Justice
Alquist Proft, Master Sleuth
Anzrag, the Quake-Mole
Aurelia's Vindicator
Conspiracy Unraveler
Delney, Streetwise Lookout
Etrata, Deadly Fugitive
Expedited Inheritance
Incinerator of the Guilty
Intrude on the Mind
Kaya, Spirits' Justice
Kylox's Voltstrider
Massacre Girl, Known Killer
Rakdos, Patron of Chaos
The Pride of Hull Clade
Trostani, Three Whispers
Undergrowth Recon
Urgent Necropsy
Vannifar, Evolved Enigma
Vein Ripper

Sheet bonus

At rate 1/3 (33.33%)
Melek, Reforged Researcher
Tomik, Wielder of Law
Voja, Jaws of the Conclave