Karumonix, the Rat King
$1.19
$1.19Legendary Creature — Phyrexian Rat
High Synergy Cards
The highest-synergy picks for Karumonix, the Rat King's Rat Colony builds — cards that lean hardest into the Rat Colony theme.
Rat Colony+94% Synergy
$5.58
Marrow-Gnawer+78% Synergy
$27.86
Piper of the Swarm+76% Synergy
$2.31
Pack Rat+72% Synergy
$2.48
Blightbelly Rat+70% Synergy
$0.29
Ogre Slumlord+66% Synergy
$0.41
Ichor Rats+64% Synergy
$2.31
Lord Skitter, Sewer King+61% Synergy
$4.87
Infectious Inquiry+55% Synergy
$0.38
Vraska's Fall+53% Synergy
$0.36
Top Cards
The staple cards most Karumonix, the Rat King Rat Colony decks run as their core.
Lord Skitter's Butcher+50% Synergy
$0.29
Herald's Horn+48% Synergy
$4.39
Crypt Rats+48% Synergy
$0.57
Typhoid Rats+48% Synergy
$0.21
Drown in Ichor+47% Synergy
$0.55
Tangled Colony+47% Synergy
$0.63
Ashcoat of the Shadow Swarm+46% Synergy
$41.79
Bontu's Monument+35% Synergy
$6.96
Jet Medallion+3% Synergy
$10.25
Dark Ritual-4% Synergy
$11.92
Game Changers
High-impact bombs that can take over a Karumonix, the Rat King Rat Colony game on their own.
Demonic Tutor+6% Synergy
$76.77
Vampiric Tutor+3% Synergy
$60.01
Bolas's Citadel-8% Synergy
$17.54
Necropotence-9% Synergy
$37.69
Creatures
Creatures that carry the Rat Colony plan in Karumonix, the Rat King decks, from early pressure to payoff.
Septic Rats+46% Synergy
$0.43
Rancid Rats+45% Synergy
$0.23
Ratcatcher+43% Synergy
$10.33
Voracious Vermin+41% Synergy
$0.30
Rat King, Verminister+41% Synergy
$0.72
Persistent Marshstalker+35% Synergy
$0.26
Gnat Miser+35% Synergy
$0.74
Swarm of Rats+35% Synergy
$2.24
Rat King, Pale Piper+34% Synergy
$0.39
Wave of Rats+34% Synergy
$2.98
Burglar Rat+31% Synergy
$0.24
Stronghold Rats+31% Synergy
$0.82
Chittering Skitterling+30% Synergy
$0.20
Ink-Eyes, Servant of Oni+28% Synergy
$12.93
Pestilence Rats+25% Synergy
$0.33
Old Flitterfang+24% Synergy
$0.39
Nashi, Moon Sage's Scion+23% Synergy
$3.57
Species Specialist+23% Synergy
$10.73
Ruthless Radrat+23% Synergy
$0.32
Chittering Witch+20% Synergy
$0.23
Nezumi Informant+19% Synergy
$0.37
Innocuous Rat+19% Synergy
$0.20
Changeling Outcast+18% Synergy
$2.85
Valley Rotcaller+18% Synergy
$2.81
Nezumi Prowler+18% Synergy
$0.19
Ruin Rat+17% Synergy
$0.21
Gnawing Vermin+17% Synergy
$0.24
Locust Miser+16% Synergy
$4.99
Ravenous Rats+16% Synergy
$0.51
Throat Slitter+15% Synergy
$4.06
Twisted Sewer-Witch+15% Synergy
$0.22
Daggerfang Duo+14% Synergy
$0.19
Relentless Rats+12% Synergy
$5.07
Drainpipe Vermin+12% Synergy
$0.23
Nezumi Cutthroat+12% Synergy
$0.09
Razortooth Rats+12% Synergy
$0.12
Engine Rat+11% Synergy
$0.27
Undercity Dire Rat+10% Synergy
$0.18
Rotting Rats+9% Synergy
$1.47
Roaming Throne+8% Synergy
$47.63
Refurbished Familiar+8% Synergy
$0.27
Mukotai Ambusher+8% Synergy
$0.19
Elephant-Rat+8% Synergy
$0.14
Okiba-Gang Shinobi+7% Synergy
$1.32
Nezumi Bladeblesser+7% Synergy
$0.23
Splinter, Hamato Yoshi+7% Synergy
$0.27
Ayara, First of Locthwain+1% Synergy
$8.41
Yawgmoth, Thran Physician-1% Synergy
$32.14
Crypt Ghast-28% Synergy
$19.82
Gray Merchant of Asphodel-32% Synergy
$4.86
Instants
Instant-speed interaction and tricks that keep Karumonix, the Rat King's Rat Colony deck ahead.
Whisper of the Dross+39% Synergy
$0.34
Rat Out+20% Synergy
$0.27
Grim Affliction+15% Synergy
$0.36
Village Rites+13% Synergy
$0.69
Foul-Tongue Shriek+11% Synergy
$0.26
Unbury+10% Synergy
$0.20
Go for the Throat+9% Synergy
$0.57
Tainted Strike+9% Synergy
$2.46
Gravepurge+8% Synergy
$0.15
Corrupted Conviction+7% Synergy
$0.25
Anoint with Affliction+7% Synergy
$0.20
Raise the Draugr+6% Synergy
$0.13
Murder+5% Synergy
$0.19
Death Denied+5% Synergy
$0.25
Defile+3% Synergy
$1.34
Doom Blade+2% Synergy
$0.62
Hero's Downfall+2% Synergy
$0.21
Bitter Triumph+1% Synergy
$0.30
Sudden Spoiling-2% Synergy
$8.52
Baleful Mastery-3% Synergy
$3.61
Consuming Corruption-5% Synergy
$0.36
Tragic Slip-7% Synergy
$0.26
Deadly Rollick-8% Synergy
$27.53
Infernal Grasp-9% Synergy
$0.56
Deadly Dispute-10% Synergy
$0.32
Cabal Ritual-11% Synergy
$13.61
Culling the Weak-11% Synergy
$7.76
Fell the Profane-12% Synergy
$2.42
Withering Torment-14% Synergy
$4.15
Malakir Rebirth-15% Synergy
$13.15
Sorceries
Sorceries that push the Rat Colony game plan forward for Karumonix, the Rat King.
Phyresis Outbreak+45% Synergy
$11.23
Patriarch's Bidding+33% Synergy
$4.28
Revenge of the Rats+32% Synergy
$0.28
Crippling Fear+28% Synergy
$2.66
Kindred Dominance+26% Synergy
$3.26
Swarmyard Massacre+26% Synergy
$3.91
Echoing Return+19% Synergy
$0.22
Vat Emergence+15% Synergy
$0.28
Plague of Vermin+14% Synergy
$21.94
Bloodline Bidding+12% Synergy
$1.78
Spread the Sickness+12% Synergy
$0.13
Gruesome Fate+8% Synergy
$1.12
Pact of the Serpent+8% Synergy
$0.77
Lab Rats+7% Synergy
$0.88
Caress of Phyrexia+6% Synergy
$0.30
Feed the Infection+6% Synergy
$0.20
Haunting Voyage+5% Synergy
$0.31
Forever Young+4% Synergy
$0.11
Secret Salvage+4% Synergy
$0.49
In Garruk's Wake+2% Synergy
$2.93
Unearth+1% Synergy
$0.60
Diabolic Intent0% Synergy
$17.57
Diabolic Tutor0% Synergy
$2.09
Insatiable Avarice-2% Synergy
$4.48
Grim Tutor-3% Synergy
$24.65
Damnation-4% Synergy
$20.72
Read the Bones-4% Synergy
$0.29
Sign in Blood-8% Synergy
$4.10
Mutilate-8% Synergy
$1.95
Night's Whisper-9% Synergy
$0.26
Blasphemous Edict-10% Synergy
$4.47
Bubbling Muck-10% Synergy
$3.57
Feed the Swarm-14% Synergy
$0.20
Victimize-20% Synergy
$2.27
Toxic Deluge-23% Synergy
$3.31
Reanimate-30% Synergy
$8.61
Utility Artifacts
Artifacts that add consistency and utility to Karumonix, the Rat King Rat Colony decks.
Vanquisher's Banner+34% Synergy
$4.76
Thrumming Stone+27% Synergy
$22.25
Skullclamp+24% Synergy
$4.93
Banner of Kinship+20% Synergy
$5.54
Contagion Clasp+16% Synergy
$0.33
Coat of Arms+15% Synergy
$18.43
Chronicle of Victory+14% Synergy
$19.48
Door of Destinies+14% Synergy
$2.83
Contagion Engine+10% Synergy
$13.57
Gathering Stone+10% Synergy
$0.83
Icon of Ancestry+7% Synergy
$0.43
Eldrazi Monument+6% Synergy
$9.35
Sword of the Squeak+5% Synergy
$0.70
Thornbite Staff+4% Synergy
$16.49
Whip of Erebos+3% Synergy
$8.47
Wayfarer's Bauble-10% Synergy
$0.33
Swiftfoot Boots-12% Synergy
$2.46
Ashnod's Altar-12% Synergy
$14.95
The Darkness Crystal-12% Synergy
$4.36
Lightning Greaves-16% Synergy
$3.66
Enchantments
Enchantments that reinforce the Rat Colony strategy in Karumonix, the Rat King decks.
Cover of Darkness+26% Synergy
$20.73
Necrogen Communion+25% Synergy
$0.30
Haunted One+23% Synergy
$5.92
Bad Moon+21% Synergy
$2.65
Oversold Cemetery+12% Synergy
$2.69
Phyresis+9% Synergy
$1.35
Tribute to Horobi+7% Synergy
$0.28
Lord Skitter's Blessing+7% Synergy
$0.45
Vampiric Rites+3% Synergy
$0.18
Dark Prophecy+3% Synergy
$7.02
Phyrexian Reclamation0% Synergy
$2.64
Grave Pact-1% Synergy
$31.23
Phyrexian Arena-2% Synergy
$4.33
Dictate of Erebos-2% Synergy
$17.33
Black Market-4% Synergy
$5.59
Black Market Connections-9% Synergy
$13.42
The Meathook Massacre-11% Synergy
$28.37
Planeswalkers
Planeswalkers that back up Karumonix, the Rat King's Rat Colony game plan.
Vraska, Betrayal's Sting+23% Synergy
$0.73
Liliana of the Dark Realms-3% Synergy
$9.15
Utility Lands
Non-basic lands that pull extra weight in Karumonix, the Rat King Rat Colony decks.
Swarmyard+53% Synergy
$4.93
Karn's Bastion+39% Synergy
$2.27
Mudflat Village+28% Synergy
$0.30
Three Tree City+18% Synergy
$27.19
Rogue's Passage+11% Synergy
$0.40
Access Tunnel+7% Synergy
$0.38
Mortuary Mire+6% Synergy
$0.41
Minas Morgul, Dark Fortress+3% Synergy
$18.62
Witch's Cottage+2% Synergy
$0.86
Temple of the False God+1% Synergy
$0.29
Susur Secundi, Void Altar+1% Synergy
$3.35
Cabal Stronghold0% Synergy
$10.98
Crypt of Agadeem0% Synergy
$2.34
Shizo, Death's Storehouse-1% Synergy
$35.73
Bojuka Bog-2% Synergy
$0.95
Reliquary Tower-3% Synergy
$3.36
Nykthos, Shrine to Nyx-4% Synergy
$54.27
Barren Moor-4% Synergy
$0.28
Castle Locthwain-5% Synergy
$3.77
War Room-5% Synergy
$2.87
Cabal Coffers-7% Synergy
$34.50
Phyrexian Tower-9% Synergy
$25.29
Takenuma, Abandoned Mire-10% Synergy
$11.29
Urborg, Tomb of Yawgmoth-13% Synergy
$63.85
Mana Artifacts
Mana rocks and fixing to power out Karumonix, the Rat King's Rat Colony strategy.
Glistening Sphere+33% Synergy
$12.90
Patchwork Banner+24% Synergy
$1.89
White Lotus Tile+14% Synergy
$4.14
Staff of Compleation+11% Synergy
$3.44
Heraldic Banner+5% Synergy
$0.36
Firdoch Core+5% Synergy
$0.31
Phyrexian Atlas+5% Synergy
$0.22
Gauntlet of Power+4% Synergy
$4.38
Nyx Lotus0% Synergy
$5.76
Caged Sun-1% Synergy
$3.57
Commander's Sphere-2% Synergy
$0.26
Throne of Eldraine-4% Synergy
$30.81
Charcoal Diamond-6% Synergy
$0.32
Sol Ring-8% Synergy
$1.84
Arcane Signet-12% Synergy
$0.69
Mind Stone-15% Synergy
$0.31
Thought Vessel-15% Synergy
$1.92
Lands
The mana base behind Karumonix, the Rat King's Rat Colony decks.
Path of Ancestry+23% Synergy
$0.31
Cavern of Souls+13% Synergy
$51.61
Big Apple, 3 a.m.+13% Synergy
$0.42
Command Tower+7% Synergy
$0.34
Escape Tunnel+5% Synergy
$0.26
Evolving Wilds+2% Synergy
$0.33
Swamp+1% Synergy
$0.14
Myriad Landscape-7% Synergy
$0.31
Fell the Profane-12% Synergy
$2.42
Malakir Rebirth-15% Synergy
$13.15
Similar Commanders
The following Commanders share a similar playing style, strategy, or theme like Karumonix, the Rat King: Rat Colony.
Wick, the Whorled Mind
Marrow-Gnawer
Lord Skitter, Sewer King
Ashcoat of the Shadow Swarm
Vren, the Relentless
Ink-Eyes, Servant of Oni
Patron of the Nezumi
Kinzu of the Bleak Coven
Xun Yu, Wei Advisor
Ob Nixilis, the Fallen
He Who Hungers
Shauku, Endbringer
The Meep
Massacre Girl
Totentanz, Swarm Piper
Zenos yae Galvus
Greel, Mind Raker
Kokusho, the Evening Star
The Haunt of Hightower
Infernal Kirin
Ob Nixilis, Unshackled
Shirei, Shizo's Caretaker
Drivnod, Carnage Dominus
Gríma Wormtongue
Hancock, Ghoulish Mayor
Kyoki, Sanity's Eclipse
Tourach, Dread Cantor
Trazyn the Infinite
Witch-king of Angmar
Gonti, Lord of Luxury
Rev, Tithe Extractor
Zodiark, Umbral God
Gix, Yawgmoth Praetor
Lobelia, Defender of Bag End
Massacre Girl, Known Killer
Starscream, Power Hungry
Jaheira, Friend of the Forest // Agent of the Shadow Thieves
Jecht, Reluctant Guardian
Aclazotz, Deepest Betrayal
Cao Cao, Lord of Wei