Arvinox, the Mind Flail (Commander) - Upgraded Theft

Alternate Names:

Mind Flayer, the ShadowMind Flayer, the Shadow

Arvinox, the Mind Flail
Rank #1,333
6decks
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Background image for How To Play Horrors Differently In Commander
Sikora
Oct 30, 2025
Sikora
How To Play Horrors Differently In Commander
It's the spookiest time of the year... are you thinking of brewing a deck full of Horrors? We've got some ideas for how to keep it unique!
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Thieving Amalgam
100%inclusion6 decks6 decks
99%synergy
Brainstealer Dragon
100%inclusion6 decks6 decks
97%synergy
Geth, Lord of the Vault
83%inclusion5 decks6 decks
82%synergy
Sepulchral Primordial
83%inclusion5 decks6 decks
81%synergy
Elder Brain
83%inclusion5 decks6 decks
81%synergy
Gonti, Lord of Luxury
83%inclusion5 decks6 decks
80%synergy
Gisa, Glorious Resurrector
83%inclusion5 decks6 decks
78%synergy
Dauthi Voidwalker
83%inclusion5 decks6 decks
68%synergy
Junktroller
67%inclusion4 decks6 decks
66%synergy
Dredge the Mire
67%inclusion4 decks6 decks
66%synergy
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Crypt Ghast
100%inclusion6 decks6 decks
52%synergy
Gray Merchant of Asphodel
83%inclusion5 decks6 decks
32%synergy
Dark Ritual
83%inclusion5 decks6 decks
17%synergy
Jet Medallion
83%inclusion5 decks6 decks
23%synergy
Animate Dead
83%inclusion5 decks6 decks
66%synergy
Feed the Swarm
67%inclusion4 decks6 decks
15%synergy
Court of Locthwain
67%inclusion4 decks6 decks
65%synergy
Nirkana Revenant
67%inclusion4 decks6 decks
55%synergy
Infernal Grasp
67%inclusion4 decks6 decks
41%synergy
Intellect Devourer
67%inclusion4 decks6 decks
66%synergy
Game Changers
Opposition Agent
17%inclusion1 decks6 decks
7%synergy
Ancient Tomb
17%inclusion1 decks6 decks
5%synergy
Bolas's Citadel
17%inclusion1 decks6 decks
-13%synergy
Demonic Tutor
17%inclusion1 decks6 decks
-11%synergy
Tergrid, God of Fright
17%inclusion1 decks6 decks
9%synergy
Necropotence
17%inclusion1 decks6 decks
1%synergy
Chrome Mox
17%inclusion1 decks6 decks
10%synergy
Creatures
Solemn Simulacrum
50%inclusion3 decks6 decks
26%synergy
Bismuth Mindrender
50%inclusion3 decks6 decks
49%synergy
Dread Presence
50%inclusion3 decks6 decks
35%synergy
Crabomination
50%inclusion3 decks6 decks
49%synergy
Gix, Yawgmoth Praetor
50%inclusion3 decks6 decks
45%synergy
Thieving Varmint
50%inclusion3 decks6 decks
47%synergy
Gonti, Night Minister
50%inclusion3 decks6 decks
47%synergy
Reito Sentinel
50%inclusion3 decks6 decks
50%synergy
Black Cat, Cunning Thief
50%inclusion1 decks2 decks
49%synergy
Hoarding Broodlord
33%inclusion2 decks6 decks
29%synergy
Plaguecrafter
33%inclusion2 decks6 decks
13%synergy
Defiler of Flesh
33%inclusion2 decks6 decks
29%synergy
Tinybones, the Pickpocket
33%inclusion2 decks6 decks
28%synergy
Burnished Hart
33%inclusion2 decks6 decks
25%synergy
Author of Shadows
33%inclusion2 decks6 decks
33%synergy
Draugr Necromancer
33%inclusion2 decks6 decks
33%synergy
Nashi, Moon Sage's Scion
33%inclusion2 decks6 decks
29%synergy
Rakshasa Debaser
33%inclusion2 decks6 decks
32%synergy
Leaden Myr
33%inclusion2 decks6 decks
27%synergy
Chrome Companion
33%inclusion1 decks3 decks
33%synergy
The Warring Triad
25%inclusion1 decks4 decks
24%synergy
Syr Konrad, the Grim
17%inclusion1 decks6 decks
-4%synergy
Uchuulon
17%inclusion1 decks6 decks
17%synergy
Alchemist's Assistant
17%inclusion1 decks6 decks
16%synergy
Phyrexian Obliterator
17%inclusion1 decks6 decks
6%synergy
Nighthowler
17%inclusion1 decks6 decks
16%synergy
Lord of the Void
17%inclusion1 decks6 decks
15%synergy
Massacre Girl
17%inclusion1 decks6 decks
9%synergy
Hoverstone Pilgrim
17%inclusion1 decks6 decks
17%synergy
Abyssal Harvester
17%inclusion1 decks6 decks
12%synergy
Lorcan, Warlock Collector
17%inclusion1 decks6 decks
16%synergy
Ravenous Chupacabra
17%inclusion1 decks6 decks
12%synergy
Shelob, Dread Weaver
17%inclusion1 decks6 decks
16%synergy
Myojin of Grim Betrayal
17%inclusion1 decks6 decks
16%synergy
Sheoldred, Whispering One
17%inclusion1 decks6 decks
5%synergy
Royal Assassin
17%inclusion1 decks6 decks
14%synergy
Geode Golem
17%inclusion1 decks6 decks
16%synergy
Qarsi Revenant
17%inclusion1 decks6 decks
12%synergy
Sewer Nemesis
17%inclusion1 decks6 decks
16%synergy
Valgavoth, Terror Eater
17%inclusion1 decks6 decks
11%synergy
Chainer, Dementia Master
17%inclusion1 decks6 decks
11%synergy
Oblivion Sower
17%inclusion1 decks6 decks
16%synergy
Accursed Marauder
17%inclusion1 decks6 decks
-4%synergy
Pontiff of Blight
17%inclusion1 decks6 decks
13%synergy
Millikin
17%inclusion1 decks6 decks
13%synergy
Echo of Dusk
17%inclusion1 decks6 decks
16%synergy
Instants
Withering Torment
67%inclusion4 decks6 decks
35%synergy
Consuming Corruption
50%inclusion3 decks6 decks
34%synergy
Defile
50%inclusion3 decks6 decks
12%synergy
Outrageous Robbery
50%inclusion3 decks6 decks
48%synergy
Baleful Mastery
50%inclusion3 decks6 decks
40%synergy
Deadly Rollick
33%inclusion2 decks6 decks
10%synergy
Stinging Study
33%inclusion2 decks6 decks
30%synergy
Imp's Mischief
33%inclusion2 decks6 decks
10%synergy
Soul Shatter
33%inclusion2 decks6 decks
21%synergy
Malakir Rebirth
33%inclusion2 decks6 decks
11%synergy
Sudden Spoiling
33%inclusion2 decks6 decks
24%synergy
Fell the Profane
17%inclusion1 decks6 decks
-2%synergy
Force of Despair
17%inclusion1 decks6 decks
9%synergy
Thrilling Encore
17%inclusion1 decks6 decks
15%synergy
Go for the Throat
17%inclusion1 decks6 decks
-7%synergy
Snuff Out
17%inclusion1 decks6 decks
4%synergy
Heartless Act
17%inclusion1 decks6 decks
15%synergy
Village Rites
17%inclusion1 decks6 decks
-8%synergy
Hatred
17%inclusion1 decks6 decks
16%synergy
Deadly Dispute
17%inclusion1 decks6 decks
-7%synergy
Renegade's Getaway
17%inclusion1 decks6 decks
17%synergy
Doom Blade
17%inclusion1 decks6 decks
9%synergy
Not of This World
17%inclusion1 decks6 decks
16%synergy
Dash Hopes
17%inclusion1 decks6 decks
16%synergy
Withering Boon
17%inclusion1 decks6 decks
12%synergy
Tendrils of Corruption
17%inclusion1 decks6 decks
13%synergy
Darkness
17%inclusion1 decks6 decks
7%synergy
Spoils of Evil
17%inclusion1 decks6 decks
16%synergy
Grim Return
17%inclusion1 decks6 decks
15%synergy
Curtains' Call
17%inclusion1 decks6 decks
15%synergy
Power Word Kill
17%inclusion1 decks6 decks
15%synergy
Sorceries
Sign in Blood
67%inclusion4 decks6 decks
30%synergy
Heartless Conscription
67%inclusion4 decks6 decks
65%synergy
Read the Bones
50%inclusion3 decks6 decks
32%synergy
Night's Whisper
50%inclusion3 decks6 decks
26%synergy
Reanimate
50%inclusion3 decks6 decks
12%synergy
Toxic Deluge
50%inclusion3 decks6 decks
13%synergy
Damnation
50%inclusion3 decks6 decks
29%synergy
Breach the Multiverse
50%inclusion3 decks6 decks
44%synergy
Visions of Dread
33%inclusion2 decks6 decks
33%synergy
Torment of Hailfire
33%inclusion2 decks6 decks
17%synergy
Bubbling Muck
33%inclusion2 decks6 decks
18%synergy
Shadow of the Enemy
33%inclusion2 decks6 decks
33%synergy
Mutilate
33%inclusion2 decks6 decks
14%synergy
Cruelclaw's Heist
33%inclusion2 decks6 decks
31%synergy
Exsanguinate
33%inclusion2 decks6 decks
9%synergy
Decree of Pain
33%inclusion2 decks6 decks
27%synergy
Syphon Mind
33%inclusion2 decks6 decks
20%synergy
Black Sun's Zenith
17%inclusion1 decks6 decks
11%synergy
Life's Finale
17%inclusion1 decks6 decks
16%synergy
Afterlife from the Loam
17%inclusion1 decks6 decks
16%synergy
Will of the Abzan
17%inclusion1 decks6 decks
13%synergy
Xander's Pact
17%inclusion1 decks6 decks
16%synergy
Dead of Winter
17%inclusion1 decks6 decks
16%synergy
Final Strike
17%inclusion1 decks6 decks
17%synergy
Blasphemous Edict
17%inclusion1 decks6 decks
-1%synergy
Praetor's Grasp
17%inclusion1 decks6 decks
13%synergy
Blood Money
17%inclusion1 decks6 decks
14%synergy
Ancient Craving
17%inclusion1 decks6 decks
14%synergy
Consume Spirit
17%inclusion1 decks6 decks
15%synergy
Lay Bare the Heart
17%inclusion1 decks6 decks
17%synergy
Corrupt
17%inclusion1 decks6 decks
14%synergy
Insatiable Avarice
17%inclusion1 decks6 decks
4%synergy
Essence Harvest
17%inclusion1 decks6 decks
16%synergy
Beacon of Unrest
17%inclusion1 decks6 decks
12%synergy
Necromantic Selection
17%inclusion1 decks6 decks
15%synergy
Deadly Tempest
17%inclusion1 decks6 decks
14%synergy
From the Catacombs
17%inclusion1 decks6 decks
16%synergy
Rise of the Dark Realms
17%inclusion1 decks6 decks
4%synergy
Sanguimancy
17%inclusion1 decks6 decks
16%synergy
Worst Fears
17%inclusion1 decks6 decks
16%synergy
Utility Artifacts
The Darkness Crystal
75%inclusion3 decks4 decks
55%synergy
Chaos Wand
33%inclusion2 decks6 decks
33%synergy
Bontu's Monument
33%inclusion2 decks6 decks
6%synergy
Staff of Eden, Vault's Key
33%inclusion2 decks6 decks
32%synergy
Swiftfoot Boots
33%inclusion2 decks6 decks
2%synergy
Lightning Greaves
33%inclusion2 decks6 decks
0%synergy
Mesmeric Orb
17%inclusion1 decks6 decks
14%synergy
Lashwrithe
17%inclusion1 decks6 decks
13%synergy
Portal to Phyrexia
17%inclusion1 decks6 decks
15%synergy
Wayfarer's Bauble
17%inclusion1 decks6 decks
0%synergy
Whip of Erebos
17%inclusion1 decks6 decks
6%synergy
Cauldron of Souls
17%inclusion1 decks6 decks
15%synergy
Aetherflux Reservoir
17%inclusion1 decks6 decks
6%synergy
Mind's Eye
17%inclusion1 decks6 decks
16%synergy
Realmbreaker, the Invasion Tree
17%inclusion1 decks6 decks
16%synergy
Wishclaw Talisman
17%inclusion1 decks6 decks
10%synergy
Expedition Map
17%inclusion1 decks6 decks
4%synergy
Mask of Griselbrand
17%inclusion1 decks6 decks
13%synergy
Altar of the Wretched
17%inclusion1 decks6 decks
16%synergy
Enchantments
The Eldest Reborn
50%inclusion3 decks6 decks
46%synergy
Dead Man's Chest
50%inclusion3 decks6 decks
49%synergy
Cunning Rhetoric
50%inclusion3 decks6 decks
48%synergy
Phyrexian Arena
50%inclusion3 decks6 decks
10%synergy
Black Market
33%inclusion2 decks6 decks
12%synergy
Dance of the Dead
17%inclusion1 decks6 decks
13%synergy
Greed
17%inclusion1 decks6 decks
9%synergy
The Cruelty of Gix
17%inclusion1 decks6 decks
15%synergy
Protection Racket
17%inclusion1 decks6 decks
16%synergy
Meathook Massacre II
17%inclusion1 decks6 decks
10%synergy
Necromancy
17%inclusion1 decks6 decks
11%synergy
Grave Betrayal
17%inclusion1 decks6 decks
14%synergy
Revenge of Ravens
17%inclusion1 decks6 decks
14%synergy
Heartless Summoning
17%inclusion1 decks6 decks
12%synergy
Planeswalkers
Liliana of the Dark Realms
17%inclusion1 decks6 decks
3%synergy
Utility Lands
Cabal Stronghold
100%inclusion6 decks6 decks
64%synergy
Cabal Coffers
100%inclusion6 decks6 decks
45%synergy
Bojuka Bog
50%inclusion3 decks6 decks
3%synergy
Nykthos, Shrine to Nyx
50%inclusion3 decks6 decks
20%synergy
Witch's Cottage
33%inclusion2 decks6 decks
9%synergy
Takenuma, Abandoned Mire
33%inclusion2 decks6 decks
17%synergy
Castle Locthwain
33%inclusion2 decks6 decks
16%synergy
Reliquary Tower
33%inclusion2 decks6 decks
2%synergy
Urborg, Tomb of Yawgmoth
33%inclusion2 decks6 decks
-4%synergy
Wasteland
17%inclusion1 decks6 decks
15%synergy
Phyrexian Tower
17%inclusion1 decks6 decks
-7%synergy
Mortuary Mire
17%inclusion1 decks6 decks
3%synergy
Ghost Quarter
17%inclusion1 decks6 decks
14%synergy
Maze of Ith
17%inclusion1 decks6 decks
13%synergy
Crypt of Agadeem
17%inclusion1 decks6 decks
6%synergy
War Room
17%inclusion1 decks6 decks
0%synergy
Geier Reach Sanitarium
17%inclusion1 decks6 decks
5%synergy
Command Beacon
17%inclusion1 decks6 decks
8%synergy
Temple of the False God
17%inclusion1 decks6 decks
9%synergy
Leechridden Swamp
17%inclusion1 decks6 decks
14%synergy
Guildless Commons
17%inclusion1 decks6 decks
16%synergy
Rogue's Passage
17%inclusion1 decks6 decks
-2%synergy
Mana Artifacts
Sol Ring
100%inclusion6 decks6 decks
14%synergy
Arcane Signet
50%inclusion3 decks6 decks
-13%synergy
Thran Dynamo
50%inclusion3 decks6 decks
44%synergy
Nyx Lotus
50%inclusion3 decks6 decks
43%synergy
Everflowing Chalice
33%inclusion2 decks6 decks
27%synergy
Vessel of Endless Rest
33%inclusion2 decks6 decks
33%synergy
Thought Vessel
33%inclusion2 decks6 decks
6%synergy
Worn Powerstone
33%inclusion2 decks6 decks
29%synergy
Mind Stone
33%inclusion2 decks6 decks
2%synergy
Sceptre of Eternal Glory
33%inclusion2 decks6 decks
24%synergy
Caged Sun
17%inclusion1 decks6 decks
4%synergy
Charcoal Diamond
17%inclusion1 decks6 decks
-7%synergy
Hedron Archive
17%inclusion1 decks6 decks
13%synergy
Fellwar Stone
17%inclusion1 decks6 decks
2%synergy
Gilded Lotus
17%inclusion1 decks6 decks
11%synergy
The Celestus
17%inclusion1 decks6 decks
17%synergy
Extraplanar Lens
17%inclusion1 decks6 decks
12%synergy
Skyclave Relic
17%inclusion1 decks6 decks
16%synergy
Lands
Myriad Landscape
83%inclusion5 decks6 decks
57%synergy
Swamp
83%inclusion5 decks6 decks
-11%synergy
Malakir Rebirth
33%inclusion2 decks6 decks
11%synergy
Fell the Profane
17%inclusion1 decks6 decks
-2%synergy
Snow-Covered Swamp
17%inclusion1 decks6 decks
10%synergy
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