Karumonix, the Rat King
$0.98
$0.98Legendary Creature — Phyrexian Rat
High Synergy Cards
The highest-synergy picks for Karumonix, the Rat King's Relentless Rats builds — cards that lean hardest into the Relentless Rats theme.
Relentless Rats+93% Synergy
$4.42
Piper of the Swarm+61% Synergy
$2.25
Marrow-Gnawer+61% Synergy
$30.79
Ogre Slumlord+53% Synergy
$0.33
Pack Rat+50% Synergy
$3.50
Thrumming Stone+49% Synergy
$22.63
Blightbelly Rat+44% Synergy
$0.34
Ichor Rats+41% Synergy
$1.88
Lord Skitter, Sewer King+41% Synergy
$4.52
Herald's Horn+35% Synergy
$5.10
Top Cards
The staple cards most Karumonix, the Rat King Relentless Rats decks run as their core.
Infectious Inquiry+35% Synergy
$0.41
Ratcatcher+34% Synergy
$14.08
Typhoid Rats+34% Synergy
$0.28
Patriarch's Bidding+33% Synergy
$3.69
Vanquisher's Banner+28% Synergy
$5.20
Lord Skitter's Butcher+28% Synergy
$0.32
Bontu's Monument+25% Synergy
$4.94
Phyrexian Arena+1% Synergy
$4.43
Jet Medallion-2% Synergy
$12.26
Dark Ritual-15% Synergy
$5.94
Game Changers
High-impact bombs that can take over a Karumonix, the Rat King Relentless Rats game on their own.
Demonic Tutor+11% Synergy
$61.95
Vampiric Tutor+8% Synergy
$54.82
Imperial Seal+2% Synergy
$165.76
Ancient Tomb-6% Synergy
$134.99
Bolas's Citadel-16% Synergy
$14.92
Creatures
Creatures that carry the Relentless Rats plan in Karumonix, the Rat King decks, from early pressure to payoff.
Septic Rats+28% Synergy
$0.43
Ashcoat of the Shadow Swarm+27% Synergy
$40.83
Crypt Rats+25% Synergy
$0.50
Rancid Rats+24% Synergy
$0.20
Tangled Colony+20% Synergy
$1.03
Persistent Marshstalker+20% Synergy
$0.27
Voracious Vermin+19% Synergy
$0.32
Ink-Eyes, Servant of Oni+19% Synergy
$13.59
Swarm of Rats+19% Synergy
$3.03
Wave of Rats+19% Synergy
$3.22
Pestilence Rats+18% Synergy
$0.33
Gnat Miser+17% Synergy
$0.79
Burglar Rat+15% Synergy
$0.25
Engine Rat+14% Synergy
$0.26
Chittering Skitterling+13% Synergy
$0.19
Ravenous Rats+12% Synergy
$0.58
Ruin Rat+12% Synergy
$0.18
Twisted Sewer-Witch+12% Synergy
$0.31
Stronghold Rats+11% Synergy
$0.54
Throat Slitter+11% Synergy
$3.92
Drainpipe Vermin+11% Synergy
$0.37
Locust Miser+10% Synergy
$3.42
Nezumi Prowler+9% Synergy
$0.30
Nezumi Graverobber+9% Synergy
$0.53
Old Flitterfang+9% Synergy
$0.40
Mukotai Ambusher+9% Synergy
$0.27
Species Specialist+8% Synergy
$10.25
Valley Rotcaller+8% Synergy
$3.15
Gnawing Vermin+8% Synergy
$0.22
Innocuous Rat+8% Synergy
$0.18
Daggerfang Duo+8% Synergy
$0.19
Nezumi Bladeblesser+8% Synergy
$0.21
Adaptive Automaton+8% Synergy
$0.41
Nezumi Cutthroat+8% Synergy
$0.09
Patron of the Nezumi+8% Synergy
$0.52
Nashi, Moon Sage's Scion+7% Synergy
$3.71
Rat King, Pale Piper+7% Synergy
$0.34
Nezumi Informant+6% Synergy
$0.38
Rat King, Verminister+6% Synergy
$0.87
Chittering Rats+6% Synergy
$0.37
Thornplate Intimidator+6% Synergy
$0.18
Chittering Witch+5% Synergy
$0.28
Refurbished Familiar+5% Synergy
$0.37
Rotting Rats+4% Synergy
$1.48
Changeling Outcast+3% Synergy
$2.30
Rat Colony+2% Synergy
$5.94
Yawgmoth, Thran Physician-2% Synergy
$30.68
Ayara, First of Locthwain-9% Synergy
$7.69
Crypt Ghast-33% Synergy
$16.51
Gray Merchant of Asphodel-37% Synergy
$5.52
Instants
Instant-speed interaction and tricks that keep Karumonix, the Rat King's Relentless Rats deck ahead.
Vraska's Fall+27% Synergy
$0.36
Whisper of the Dross+21% Synergy
$0.35
Rat Out+16% Synergy
$0.26
Foul-Tongue Shriek+14% Synergy
$0.25
Grim Affliction+12% Synergy
$0.33
Tainted Strike+10% Synergy
$3.00
Anoint with Affliction+10% Synergy
$0.24
Murder+6% Synergy
$0.21
Gravepurge+6% Synergy
$0.21
Raise the Draugr+6% Synergy
$0.23
Death Denied+5% Synergy
$0.23
Hero's Downfall+3% Synergy
$0.28
Corrupted Conviction+2% Synergy
$0.29
Village Rites-1% Synergy
$0.38
Go for the Throat-2% Synergy
$0.57
Bitter Triumph-2% Synergy
$0.32
Sudden Spoiling-2% Synergy
$6.46
Doom Blade-2% Synergy
$0.24
Archenemy's Charm-3% Synergy
$0.66
Consuming Corruption-5% Synergy
$0.33
Deadly Rollick-10% Synergy
$27.91
Defile-11% Synergy
$1.35
Cabal Ritual-11% Synergy
$13.51
Tragic Slip-12% Synergy
$0.35
Deadly Dispute-13% Synergy
$0.34
Infernal Grasp-16% Synergy
$0.35
Withering Torment-21% Synergy
$0.86
Sorceries
Sorceries that push the Relentless Rats game plan forward for Karumonix, the Rat King.
Echoing Return+26% Synergy
$0.23
Drown in Ichor+25% Synergy
$0.78
Kindred Dominance+23% Synergy
$4.09
Revenge of the Rats+23% Synergy
$0.31
Phyresis Outbreak+21% Synergy
$11.96
Crippling Fear+18% Synergy
$2.42
Swarmyard Massacre+17% Synergy
$4.03
Vat Emergence+17% Synergy
$0.35
Spread the Sickness+12% Synergy
$0.19
Diabolic Tutor+8% Synergy
$2.35
Fell+8% Synergy
$0.35
Forever Young+8% Synergy
$0.14
Gruesome Fate+8% Synergy
$1.16
Feed the Infection+7% Synergy
$0.26
Haunting Voyage+6% Synergy
$0.40
Lab Rats+6% Synergy
$0.60
Grim Tutor+5% Synergy
$24.73
In Garruk's Wake+5% Synergy
$3.23
Return from Extinction+5% Synergy
$0.27
Plague of Vermin+4% Synergy
$21.87
Villainous Wrath+4% Synergy
$1.36
Profane Tutor+3% Synergy
$4.13
Living Death-1% Synergy
$3.57
Insatiable Avarice-3% Synergy
$4.79
Read the Bones-4% Synergy
$0.34
Diabolic Intent-4% Synergy
$16.42
Damnation-5% Synergy
$20.48
Mutilate-11% Synergy
$2.01
Night's Whisper-12% Synergy
$5.42
Sign in Blood-13% Synergy
$3.83
Victimize-18% Synergy
$1.58
Exsanguinate-18% Synergy
$0.39
Toxic Deluge-28% Synergy
$4.37
Feed the Swarm-28% Synergy
$0.16
Reanimate-30% Synergy
$9.76
Utility Artifacts
Artifacts that add consistency and utility to Karumonix, the Rat King Relentless Rats decks.
Chronicle of Victory+24% Synergy
$23.98
Coat of Arms+23% Synergy
$20.16
Door of Destinies+20% Synergy
$2.62
Banner of Kinship+20% Synergy
$8.17
Contagion Clasp+14% Synergy
$0.37
Contagion Engine+8% Synergy
$13.41
Icon of Ancestry+8% Synergy
$0.42
Akroma's Memorial+8% Synergy
$34.54
Whip of Erebos+7% Synergy
$9.07
Grafted Exoskeleton+7% Synergy
$5.59
Prosthetic Injector+7% Synergy
$0.23
Eldrazi Monument+6% Synergy
$10.44
Obelisk of Urd+5% Synergy
$2.73
Skullclamp-3% Synergy
$5.65
Ashnod's Altar-12% Synergy
$15.57
Swiftfoot Boots-15% Synergy
$2.28
The Darkness Crystal-15% Synergy
$4.44
Lightning Greaves-21% Synergy
$4.52
Enchantments
Enchantments that reinforce the Relentless Rats strategy in Karumonix, the Rat King decks.
Necrogen Communion+21% Synergy
$0.35
Bad Moon+19% Synergy
$3.07
Cover of Darkness+19% Synergy
$22.75
Phyresis+14% Synergy
$2.92
Oversold Cemetery+8% Synergy
$2.64
Haunted One+7% Synergy
$5.25
Tribute to Horobi+7% Synergy
$0.28
Lord Skitter's Blessing+6% Synergy
$0.43
Dark Prophecy+5% Synergy
$6.96
Sothera, the Supervoid+3% Synergy
$2.94
Vampiric Rites+1% Synergy
$0.13
Black Market-3% Synergy
$6.17
Dictate of Erebos-3% Synergy
$19.16
Phyrexian Reclamation-4% Synergy
$2.99
Grave Pact-5% Synergy
$33.84
Black Market Connections-9% Synergy
$10.16
The Meathook Massacre-10% Synergy
$27.06
Planeswalkers
Planeswalkers that back up Karumonix, the Rat King's Relentless Rats game plan.
Vraska, Betrayal's Sting+20% Synergy
$0.96
Liliana of the Dark Realms-1% Synergy
$9.20
Utility Lands
Non-basic lands that pull extra weight in Karumonix, the Rat King Relentless Rats decks.
Swarmyard+35% Synergy
$6.35
Karn's Bastion+26% Synergy
$2.57
Mudflat Village+19% Synergy
$0.32
Three Tree City+17% Synergy
$28.42
Rogue's Passage+11% Synergy
$0.36
Mortuary Mire+5% Synergy
$0.39
Secret Tunnel+5% Synergy
$2.40
Access Tunnel+3% Synergy
$0.40
Shizo, Death's Storehouse-1% Synergy
$33.75
Witch's Cottage-3% Synergy
$1.06
Crypt of Agadeem-3% Synergy
$4.36
Barren Moor-3% Synergy
$0.26
Reliquary Tower-7% Synergy
$3.52
Nykthos, Shrine to Nyx-7% Synergy
$53.41
Castle Locthwain-7% Synergy
$4.58
War Room-7% Synergy
$5.79
Cabal Stronghold-9% Synergy
$12.47
Urborg, Tomb of Yawgmoth-11% Synergy
$54.58
Cabal Coffers-12% Synergy
$29.97
Phyrexian Tower-12% Synergy
$28.19
Bojuka Bog-14% Synergy
$1.93
Mana Artifacts
Mana rocks and fixing to power out Karumonix, the Rat King's Relentless Rats strategy.
Patchwork Banner+22% Synergy
$2.50
Glistening Sphere+19% Synergy
$12.62
Phyrexian Atlas+10% Synergy
$0.22
Heraldic Banner+9% Synergy
$0.37
Staff of Compleation+7% Synergy
$4.16
Caged Sun+5% Synergy
$3.72
Gauntlet of Power+5% Synergy
$4.08
Extraplanar Lens+1% Synergy
$12.93
Commander's Sphere0% Synergy
$0.34
Throne of Eldraine-4% Synergy
$28.49
Charcoal Diamond-5% Synergy
$0.38
Thought Vessel-7% Synergy
$2.59
The Soul Stone-9% Synergy
$101.88
Mind Stone-14% Synergy
$0.31
Sol Ring-16% Synergy
$1.55
Arcane Signet-20% Synergy
$0.89
Lands
The mana base behind Karumonix, the Rat King's Relentless Rats decks.
Path of Ancestry+19% Synergy
$0.23
Big Apple, 3 a.m.+9% Synergy
$0.37
Command Tower+6% Synergy
$0.31
Vibrant Cityscape+5% Synergy
$0.30
Daily Bugle Building+5% Synergy
$0.28
Command Bridge+5% Synergy
$0.27
Swamp+4% Synergy
$0.08
Cavern of Souls+4% Synergy
$51.14
Evolving Wilds+3% Synergy
$0.25
Myriad Landscape-12% Synergy
$0.37
Similar Commanders
The following Commanders share a similar playing style, strategy, or theme like Karumonix, the Rat King: Relentless Rats.
Marrow-Gnawer
Wick, the Whorled Mind
Ashcoat of the Shadow Swarm
Lord Skitter, Sewer King
Vren, the Relentless
Ink-Eyes, Servant of Oni
Patron of the Nezumi
Kinzu of the Bleak Coven
Xun Yu, Wei Advisor
Zenos yae Galvus
Ob Nixilis, the Fallen
He Who Hungers
Shauku, Endbringer
The Meep
Massacre Girl
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
Jecht, Reluctant Guardian
Aclazotz, Deepest Betrayal
Cao Cao, Lord of Wei
Ixhel, Scion of Atraxa
Tinybones, the Pickpocket