Duskmourn: House of Horror Arena Play Booster has variants:
Explore this pack in Sealed.

Sheets

Sheet land

At rate 1/20 (5.0%)
Abandoned Campground
Bleeding Woods
Etched Cornfield
Lakeside Shack
Murky Sewer
Neglected Manor
Peculiar Lighthouse
Raucous Carnival
Razortrap Gorge
Strangled Cemetery
At rate 1/30 (3.33%)
Forest
Forest
Forest
Island
Island
Island
Mountain
Mountain
Mountain
Plains
Plains
Plains
Swamp
Swamp
Swamp

Sheet common

At rate 1/81 (1.23%)
Acrobatic Cheerleader
Anthropede
Appendage Amalgam
Balemurk Leech
Bashful Beastie
Bear Trap
Bedhead Beastie
Boilerbilges Ripper
Cackling Slasher
Cautious Survivor
Clammy Prowler
Clockwork Percussionist
Cracked Skull
Creeping Peeper
Cryptid Inspector
Cult Healer
Daggermaw Megalodon
Derelict Attic
Don't Make a Sound
Emerge from the Cocoon
Enter the Enigma
Erratic Apparition
Fanatic of the Harrowing
Fear of Immobility
Fear of Lost Teeth
Fear of Surveillance
Fear of the Dark
Final Vengeance
Flesh Burrower
Found Footage
Frantic Strength
Friendly Ghost
Friendly Teddy
Give In to Violence
Glassworks
Glimmerburst
Glimmerlight
Grab the Prize
Grand Entryway
Grasping Longneck
Hand That Feeds
Hardened Escort
Horrid Vigor
Impossible Inferno
Innocuous Rat
Jump Scare
Living Phone
Malevolent Chandelier
Manifest Dread
Meat Locker
Moldering Gym
Monstrous Emergence
Most Valuable Slayer
Murder
Piranha Fly
Possessed Goat
Ragged Playmate
Rampaging Soulrager
Resurrected Cultist
Ripchain Razorkin
Say Its Name
Scorching Dragonfire
Seized from Slumber
Shepherding Spirits
Slavering Branchsnapper
Spectral Snatcher
Spineseeker Centipede
Stalked Researcher
Terramorphic Expanse
Ticket Booth
Trapped in the Screen
Tunnel Surveyor
Turn Inside Out
Twist Reality
Unable to Scream
Underwater Tunnel
Unsettling Twins
Vanish from Sight
Vicious Clown
Wary Watchdog
Winter's Intervention

Sheet uncommon

At rate 1/100 (1.0%)
Altanak, the Thrice-Called
Arabella, Abandoned Doll
Attack-in-the-Box
Baseball Bat
Beastie Beatdown
Betrayer's Bargain
Bottomless Pool
Break Down the Door
Broodspinner
Cathartic Parting
Commune with Evil
Conductive Machete
Coordinated Clobbering
Cursed Windbreaker
Cynical Loner
Dashing Bloodsucker
Defiant Survivor
Defiled Crypt
Disturbing Mirth
Diversion Specialist
Drag to the Roots
Duskmourn's Domination
Ethereal Armor
Exorcise
Fear of Abduction
Fear of Being Hunted
Fear of Burning Alive
Fear of Exposure
Fear of Failed Tests
Fear of Falling
Fear of Impostors
Fear of Infinity
Fear of Isolation
Floodpits Drowner
Get Out
Ghostly Keybearer
Glimmer Seeker
Greenhouse
Gremlin Tamer
Growing Dread
Haunted Screen
House Cartographer
Infernal Phantom
Inquisitive Glimmer
Insidious Fungus
Intruding Soulrager
Irreverent Gremlin
Keys to the House
Killer's Mask
Let's Play a Game
Lionheart Glimmer
Live or Die
Miasma Demon
Midnight Mayhem
Norin, Swift Survivalist
Nowhere to Run
Oblivious Bookworm
Optimistic Scavenger
Orphans of the Wheat
Osseous Sticktwister
Overgrown Zealot
Painter's Studio
Paranormal Analyst
Patched Plaything
Patchwork Beastie
Piggy Bank
Popular Egotist
Pyroclasm
Razorkin Hordecaller
Rite of the Moth
Rootwise Survivor
Savior of the Small
Saw
Sawblade Skinripper
Scrabbling Skullcrab
Shardmage's Rescue
Sheltered by Ghosts
Shrewd Storyteller
Shroudstomper
Skullsnap Nuisance
Smoky Lounge
Splitskin Doll
Sporogenic Infection
Stay Hidden, Stay Silent
Surgical Suite
Threats Around Every Corner
Trial of Agony
Under the Skin
Unnerving Grasp
Untimely Malfunction
Unwanted Remake
Unwilling Vessel
Valgavoth's Faithful
Vengeful Possession
Veteran Survivor
Vile Mutilator
Violent Urge
Wickerfolk Thresher
Wildfire Wickerfolk
Withering Torment

Sheet rare_mythic

At rate 1/70 (1.43%)
Balustrade Wurm
Blazemire Verge
Central Elevator
Chainsaw
Come Back Wrong
Cursed Recording
Dazzling Theater
Demonic Counsel
Dissection Tools
Doomsday Excruciator
Enduring Courage
Enduring Curiosity
Enduring Innocence
Enduring Tenacity
Enduring Vitality
Entity Tracker
Fear of Missing Out
Floodfarm Verge
Ghost Vacuum
Ghostly Dancers
Gloomlake Verge
Grievous Wound
Hedge Shredder
Hushwood Verge
Kona, Rescue Beastie
Leyline of Hope
Leyline of Mutation
Leyline of Resonance
Leyline of Transformation
Leyline of the Void
Marina Vendrell
Marina Vendrell's Grimoire
Marvin, Murderous Mimic
Nashi, Searcher in the Dark
Omnivorous Flytrap
Peer Past the Veil
Razorkin Needlehead
Reluctant Role Model
Restricted Office
Rip, Spawn Hunter
Roaring Furnace
Silent Hallcreeper
Split Up
The Jolly Balloon Man
The Mindskinner
The Swarmweaver
The Tale of Tamiyo
Thornspire Verge
Toby, Beastie Befriender
Twitching Doll
Undead Sprinter
Unholy Annex
Unidentified Hovership
Unstoppable Slasher
Valgavoth's Lair
Valgavoth's Onslaught
Victor, Valgavoth's Seneschal
Waltz of Rage
Winter, Misanthropic Guide
Zimone, All-Questioning
At rate 1/140 (0.71%)
Abhorrent Oculus
Charred Foyer
Dollmaker's Shop
Funeral Room
Hauntwoods Shrieker
Kaito, Bane of Nightmares
Meathook Massacre II
Mirror Room
Niko, Light of Hope
Overlord of the Balemurk
Overlord of the Boilerbilges
Overlord of the Floodpits
Overlord of the Hauntwoods
Overlord of the Mistmoors
Screaming Nemesis
The Rollercrusher Ride
The Wandering Rescuer
Tyvar, the Pummeler
Valgavoth, Terror Eater
Walk-In Closet

Sheet wildcard

At rate 671/100300 (0.67%)
Altanak, the Thrice-Called
Arabella, Abandoned Doll
Attack-in-the-Box
Baseball Bat
Beastie Beatdown
Betrayer's Bargain
Bottomless Pool
Break Down the Door
Broodspinner
Cathartic Parting
Commune with Evil
Conductive Machete
Coordinated Clobbering
Cursed Windbreaker
Cynical Loner
Dashing Bloodsucker
Defiant Survivor
Defiled Crypt
Disturbing Mirth
Diversion Specialist
Drag to the Roots
Duskmourn's Domination
Ethereal Armor
Exorcise
Fear of Abduction
Fear of Being Hunted
Fear of Burning Alive
Fear of Exposure
Fear of Failed Tests
Fear of Falling
Fear of Impostors
Fear of Infinity
Fear of Isolation
Floodpits Drowner
Get Out
Ghostly Keybearer
Glimmer Seeker
Greenhouse
Gremlin Tamer
Growing Dread
Haunted Screen
House Cartographer
Infernal Phantom
Inquisitive Glimmer
Insidious Fungus
Intruding Soulrager
Irreverent Gremlin
Keys to the House
Killer's Mask
Let's Play a Game
Lionheart Glimmer
Live or Die
Miasma Demon
Midnight Mayhem
Norin, Swift Survivalist
Nowhere to Run
Oblivious Bookworm
Optimistic Scavenger
Orphans of the Wheat
Osseous Sticktwister
Overgrown Zealot
Painter's Studio
Paranormal Analyst
Patched Plaything
Patchwork Beastie
Piggy Bank
Popular Egotist
Pyroclasm
Razorkin Hordecaller
Rite of the Moth
Rootwise Survivor
Savior of the Small
Saw
Sawblade Skinripper
Scrabbling Skullcrab
Shardmage's Rescue
Sheltered by Ghosts
Shrewd Storyteller
Shroudstomper
Skullsnap Nuisance
Smoky Lounge
Splitskin Doll
Sporogenic Infection
Stay Hidden, Stay Silent
Surgical Suite
Threats Around Every Corner
Trial of Agony
Under the Skin
Unnerving Grasp
Untimely Malfunction
Unwanted Remake
Unwilling Vessel
Valgavoth's Faithful
Vengeful Possession
Veteran Survivor
Vile Mutilator
Violent Urge
Wickerfolk Thresher
Wildfire Wickerfolk
Withering Torment
At rate 181/81243 (0.22%)
Acrobatic Cheerleader
Anthropede
Appendage Amalgam
Balemurk Leech
Bashful Beastie
Bear Trap
Bedhead Beastie
Boilerbilges Ripper
Cackling Slasher
Cautious Survivor
Clammy Prowler
Clockwork Percussionist
Cracked Skull
Creeping Peeper
Cryptid Inspector
Cult Healer
Daggermaw Megalodon
Derelict Attic
Don't Make a Sound
Emerge from the Cocoon
Enter the Enigma
Erratic Apparition
Fanatic of the Harrowing
Fear of Immobility
Fear of Lost Teeth
Fear of Surveillance
Fear of the Dark
Final Vengeance
Flesh Burrower
Found Footage
Frantic Strength
Friendly Ghost
Friendly Teddy
Give In to Violence
Glassworks
Glimmerburst
Glimmerlight
Grab the Prize
Grand Entryway
Grasping Longneck
Hand That Feeds
Hardened Escort
Horrid Vigor
Impossible Inferno
Innocuous Rat
Jump Scare
Living Phone
Malevolent Chandelier
Manifest Dread
Meat Locker
Moldering Gym
Monstrous Emergence
Most Valuable Slayer
Murder
Piranha Fly
Possessed Goat
Ragged Playmate
Rampaging Soulrager
Resurrected Cultist
Ripchain Razorkin
Say Its Name
Scorching Dragonfire
Seized from Slumber
Shepherding Spirits
Slavering Branchsnapper
Spectral Snatcher
Spineseeker Centipede
Stalked Researcher
Terramorphic Expanse
Ticket Booth
Trapped in the Screen
Tunnel Surveyor
Turn Inside Out
Twist Reality
Unable to Scream
Underwater Tunnel
Unsettling Twins
Vanish from Sight
Vicious Clown
Wary Watchdog
Winter's Intervention
At rate 151/70210 (0.22%)
Balustrade Wurm
Blazemire Verge
Central Elevator
Chainsaw
Come Back Wrong
Cursed Recording
Dazzling Theater
Demonic Counsel
Dissection Tools
Doomsday Excruciator
Enduring Courage
Enduring Curiosity
Enduring Innocence
Enduring Tenacity
Enduring Vitality
Entity Tracker
Fear of Missing Out
Floodfarm Verge
Ghost Vacuum
Ghostly Dancers
Gloomlake Verge
Grievous Wound
Hedge Shredder
Hushwood Verge
Kona, Rescue Beastie
Leyline of Hope
Leyline of Mutation
Leyline of Resonance
Leyline of Transformation
Leyline of the Void
Marina Vendrell
Marina Vendrell's Grimoire
Marvin, Murderous Mimic
Nashi, Searcher in the Dark
Omnivorous Flytrap
Peer Past the Veil
Razorkin Needlehead
Reluctant Role Model
Restricted Office
Rip, Spawn Hunter
Roaring Furnace
Silent Hallcreeper
Split Up
The Jolly Balloon Man
The Mindskinner
The Swarmweaver
The Tale of Tamiyo
Thornspire Verge
Toby, Beastie Befriender
Twitching Doll
Undead Sprinter
Unholy Annex
Unidentified Hovership
Unstoppable Slasher
Valgavoth's Lair
Valgavoth's Onslaught
Victor, Valgavoth's Seneschal
Waltz of Rage
Winter, Misanthropic Guide
Zimone, All-Questioning
At rate 151/140420 (0.11%)
Abhorrent Oculus
Charred Foyer
Dollmaker's Shop
Funeral Room
Hauntwoods Shrieker
Kaito, Bane of Nightmares
Meathook Massacre II
Mirror Room
Niko, Light of Hope
Overlord of the Balemurk
Overlord of the Boilerbilges
Overlord of the Floodpits
Overlord of the Hauntwoods
Overlord of the Mistmoors
Screaming Nemesis
The Rollercrusher Ride
The Wandering Rescuer
Tyvar, the Pummeler
Valgavoth, Terror Eater
Walk-In Closet

Sheet foil_replacement

At rate 29/4050 (0.72%)
Acrobatic Cheerleader
Anthropede
Appendage Amalgam
Balemurk Leech
Bashful Beastie
Bear Trap
Bedhead Beastie
Boilerbilges Ripper
Cackling Slasher
Cautious Survivor
Clammy Prowler
Clockwork Percussionist
Cracked Skull
Creeping Peeper
Cryptid Inspector
Cult Healer
Daggermaw Megalodon
Derelict Attic
Don't Make a Sound
Emerge from the Cocoon
Enter the Enigma
Erratic Apparition
Fanatic of the Harrowing
Fear of Immobility
Fear of Lost Teeth
Fear of Surveillance
Fear of the Dark
Final Vengeance
Flesh Burrower
Found Footage
Frantic Strength
Friendly Ghost
Friendly Teddy
Give In to Violence
Glassworks
Glimmerburst
Glimmerlight
Grab the Prize
Grand Entryway
Grasping Longneck
Hand That Feeds
Hardened Escort
Horrid Vigor
Impossible Inferno
Innocuous Rat
Jump Scare
Living Phone
Malevolent Chandelier
Manifest Dread
Meat Locker
Moldering Gym
Monstrous Emergence
Most Valuable Slayer
Murder
Piranha Fly
Possessed Goat
Ragged Playmate
Rampaging Soulrager
Resurrected Cultist
Ripchain Razorkin
Say Its Name
Scorching Dragonfire
Seized from Slumber
Shepherding Spirits
Slavering Branchsnapper
Spectral Snatcher
Spineseeker Centipede
Stalked Researcher
Terramorphic Expanse
Ticket Booth
Trapped in the Screen
Tunnel Surveyor
Turn Inside Out
Twist Reality
Unable to Scream
Underwater Tunnel
Unsettling Twins
Vanish from Sight
Vicious Clown
Wary Watchdog
Winter's Intervention
At rate 2/625 (0.32%)
Altanak, the Thrice-Called
Arabella, Abandoned Doll
Attack-in-the-Box
Baseball Bat
Beastie Beatdown
Betrayer's Bargain
Bottomless Pool
Break Down the Door
Broodspinner
Cathartic Parting
Commune with Evil
Conductive Machete
Coordinated Clobbering
Cursed Windbreaker
Cynical Loner
Dashing Bloodsucker
Defiant Survivor
Defiled Crypt
Disturbing Mirth
Diversion Specialist
Drag to the Roots
Duskmourn's Domination
Ethereal Armor
Exorcise
Fear of Abduction
Fear of Being Hunted
Fear of Burning Alive
Fear of Exposure
Fear of Failed Tests
Fear of Falling
Fear of Impostors
Fear of Infinity
Fear of Isolation
Floodpits Drowner
Get Out
Ghostly Keybearer
Glimmer Seeker
Greenhouse
Gremlin Tamer
Growing Dread
Haunted Screen
House Cartographer
Infernal Phantom
Inquisitive Glimmer
Insidious Fungus
Intruding Soulrager
Irreverent Gremlin
Keys to the House
Killer's Mask
Let's Play a Game
Lionheart Glimmer
Live or Die
Miasma Demon
Midnight Mayhem
Norin, Swift Survivalist
Nowhere to Run
Oblivious Bookworm
Optimistic Scavenger
Orphans of the Wheat
Osseous Sticktwister
Overgrown Zealot
Painter's Studio
Paranormal Analyst
Patched Plaything
Patchwork Beastie
Piggy Bank
Popular Egotist
Pyroclasm
Razorkin Hordecaller
Rite of the Moth
Rootwise Survivor
Savior of the Small
Saw
Sawblade Skinripper
Scrabbling Skullcrab
Shardmage's Rescue
Sheltered by Ghosts
Shrewd Storyteller
Shroudstomper
Skullsnap Nuisance
Smoky Lounge
Splitskin Doll
Sporogenic Infection
Stay Hidden, Stay Silent
Surgical Suite
Threats Around Every Corner
Trial of Agony
Under the Skin
Unnerving Grasp
Untimely Malfunction
Unwanted Remake
Unwilling Vessel
Valgavoth's Faithful
Vengeful Possession
Veteran Survivor
Vile Mutilator
Violent Urge
Wickerfolk Thresher
Wildfire Wickerfolk
Withering Torment
At rate 1/700 (0.14%)
Balustrade Wurm
Blazemire Verge
Central Elevator
Chainsaw
Come Back Wrong
Cursed Recording
Dazzling Theater
Demonic Counsel
Dissection Tools
Doomsday Excruciator
Enduring Courage
Enduring Curiosity
Enduring Innocence
Enduring Tenacity
Enduring Vitality
Entity Tracker
Fear of Missing Out
Floodfarm Verge
Ghost Vacuum
Ghostly Dancers
Gloomlake Verge
Grievous Wound
Hedge Shredder
Hushwood Verge
Kona, Rescue Beastie
Leyline of Hope
Leyline of Mutation
Leyline of Resonance
Leyline of Transformation
Leyline of the Void
Marina Vendrell
Marina Vendrell's Grimoire
Marvin, Murderous Mimic
Nashi, Searcher in the Dark
Omnivorous Flytrap
Peer Past the Veil
Razorkin Needlehead
Reluctant Role Model
Restricted Office
Rip, Spawn Hunter
Roaring Furnace
Silent Hallcreeper
Split Up
The Jolly Balloon Man
The Mindskinner
The Swarmweaver
The Tale of Tamiyo
Thornspire Verge
Toby, Beastie Befriender
Twitching Doll
Undead Sprinter
Unholy Annex
Unidentified Hovership
Unstoppable Slasher
Valgavoth's Lair
Valgavoth's Onslaught
Victor, Valgavoth's Seneschal
Waltz of Rage
Winter, Misanthropic Guide
Zimone, All-Questioning
At rate 1/1400 (0.07%)
Abhorrent Oculus
Charred Foyer
Dollmaker's Shop
Funeral Room
Hauntwoods Shrieker
Kaito, Bane of Nightmares
Meathook Massacre II
Mirror Room
Niko, Light of Hope
Overlord of the Balemurk
Overlord of the Boilerbilges
Overlord of the Floodpits
Overlord of the Hauntwoods
Overlord of the Mistmoors
Screaming Nemesis
The Rollercrusher Ride
The Wandering Rescuer
Tyvar, the Pummeler
Valgavoth, Terror Eater
Walk-In Closet

Sheet special_guest

At rate 1/10 (10.0%)
Collected Company
Damnation
Expropriate
Hallowed Haunting
Maddening Hex
Noxious Revival
Phantasmal Image
Sacrifice
Soul Warden
Unholy Heat