Karumonix, the Rat King: Relentless Rats
$1.38
$1.38Legendary 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
$5.45
Piper of the Swarm+61% Synergy
$2.35
Marrow-Gnawer+60% Synergy
$27.22
Ogre Slumlord+53% Synergy
$0.39
Pack Rat+51% Synergy
$2.82
Thrumming Stone+49% Synergy
$21.84
Blightbelly Rat+44% Synergy
$0.34
Lord Skitter, Sewer King+41% Synergy
$5.06
Ichor Rats+41% Synergy
$2.27
Infectious Inquiry+35% Synergy
$0.37
Top Cards
The staple cards most Karumonix, the Rat King Relentless Rats decks run as their core.
Ratcatcher+35% Synergy
$13.86
Herald's Horn+34% Synergy
$4.72
Typhoid Rats+34% Synergy
$0.27
Patriarch's Bidding+33% Synergy
$5.14
Septic Rats+30% Synergy
$0.46
Vanquisher's Banner+28% Synergy
$3.81
Bontu's Monument+24% Synergy
$5.36
Phyrexian Arena0% Synergy
$4.02
Jet Medallion-3% Synergy
$10.47
Dark Ritual-15% Synergy
$4.19
Game Changers
High-impact bombs that can take over a Karumonix, the Rat King Relentless Rats game on their own.
Demonic Tutor+11% Synergy
$70.03
Vampiric Tutor+8% Synergy
$62.01
Imperial Seal+1% Synergy
$156.62
Ancient Tomb-6% Synergy
$125.34
Bolas's Citadel-16% Synergy
$17.35
Creatures
Creatures that carry the Relentless Rats plan in Karumonix, the Rat King decks, from early pressure to payoff.
Lord Skitter's Butcher+28% Synergy
$0.34
Ashcoat of the Shadow Swarm+26% Synergy
$55.34
Crypt Rats+25% Synergy
$0.43
Rancid Rats+25% Synergy
$0.34
Tangled Colony+20% Synergy
$0.52
Ink-Eyes, Servant of Oni+20% Synergy
$13.33
Persistent Marshstalker+19% Synergy
$0.31
Voracious Vermin+19% Synergy
$0.30
Swarm of Rats+19% Synergy
$2.04
Pestilence Rats+19% Synergy
$0.34
Wave of Rats+19% Synergy
$2.76
Gnat Miser+17% Synergy
$0.76
Burglar Rat+14% Synergy
$0.25
Engine Rat+13% Synergy
$0.29
Ruin Rat+13% Synergy
$0.23
Chittering Skitterling+13% Synergy
$0.17
Ravenous Rats+12% Synergy
$0.51
Throat Slitter+12% Synergy
$4.37
Twisted Sewer-Witch+12% Synergy
$0.28
Drainpipe Vermin+12% Synergy
$0.13
Stronghold Rats+10% Synergy
$1.04
Locust Miser+10% Synergy
$4.88
Old Flitterfang+10% Synergy
$0.34
Species Specialist+9% Synergy
$11.68
Nezumi Prowler+9% Synergy
$0.31
Nashi, Moon Sage's Scion+8% Synergy
$3.69
Valley Rotcaller+8% Synergy
$2.34
Nezumi Graverobber+8% Synergy
$0.55
Gnawing Vermin+8% Synergy
$0.28
Innocuous Rat+8% Synergy
$0.20
Daggerfang Duo+8% Synergy
$0.20
Mukotai Ambusher+8% Synergy
$0.25
Patron of the Nezumi+8% Synergy
$0.47
Nezumi Bladeblesser+8% Synergy
$0.10
Nezumi Cutthroat+8% Synergy
$0.09
Adaptive Automaton+7% Synergy
$0.42
Chittering Rats+7% Synergy
$0.34
Chittering Witch+6% Synergy
$0.28
Rat King, Pale Piper+6% Synergy
$0.32
Thornplate Intimidator+6% Synergy
$0.05
Nezumi Informant+5% Synergy
$0.39
Rat King, Verminister+5% Synergy
$0.46
Refurbished Familiar+5% Synergy
$0.29
Rotting Rats+4% Synergy
$1.30
Changeling Outcast+3% Synergy
$2.20
Rat Colony+2% Synergy
$6.97
Yawgmoth, Thran Physician-2% Synergy
$37.59
Ayara, First of Locthwain-9% Synergy
$9.63
Crypt Ghast-33% Synergy
$17.79
Gray Merchant of Asphodel-37% Synergy
$4.18
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+20% Synergy
$0.32
Rat Out+16% Synergy
$0.26
Foul-Tongue Shriek+14% Synergy
$0.24
Grim Affliction+12% Synergy
$0.40
Tainted Strike+10% Synergy
$3.37
Anoint with Affliction+10% Synergy
$0.22
Murder+7% Synergy
$0.12
Gravepurge+6% Synergy
$0.30
Raise the Draugr+6% Synergy
$0.27
Death Denied+5% Synergy
$0.24
Corrupted Conviction+2% Synergy
$0.30
Hero's Downfall+2% Synergy
$0.26
Go for the Throat-1% Synergy
$0.61
Village Rites-2% Synergy
$0.74
Bitter Triumph-2% Synergy
$1.28
Sudden Spoiling-2% Synergy
$7.76
Doom Blade-2% Synergy
$0.29
Archenemy's Charm-4% Synergy
$0.84
Consuming Corruption-5% Synergy
$0.32
Deadly Rollick-10% Synergy
$26.21
Defile-11% Synergy
$1.37
Tragic Slip-12% Synergy
$0.28
Cabal Ritual-12% Synergy
$15.78
Deadly Dispute-13% Synergy
$0.38
Infernal Grasp-16% Synergy
$0.28
Withering Torment-21% Synergy
$3.27
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
$0.99
Kindred Dominance+24% Synergy
$16.88
Revenge of the Rats+23% Synergy
$0.37
Phyresis Outbreak+20% Synergy
$14.27
Crippling Fear+17% Synergy
$2.44
Swarmyard Massacre+17% Synergy
$2.79
Vat Emergence+17% Synergy
$0.29
Spread the Sickness+11% Synergy
$0.13
Forever Young+9% Synergy
$0.16
Diabolic Tutor+8% Synergy
$2.09
Fell+7% Synergy
$0.35
Gruesome Fate+7% Synergy
$1.11
Feed the Infection+7% Synergy
$0.23
Lab Rats+7% Synergy
$1.27
In Garruk's Wake+5% Synergy
$2.36
Plague of Vermin+5% Synergy
$25.34
Haunting Voyage+5% Synergy
$0.34
Return from Extinction+5% Synergy
$0.27
Grim Tutor+4% Synergy
$23.87
Villainous Wrath+4% Synergy
$0.81
Pact of the Serpent+4% Synergy
$0.70
Profane Tutor+2% Synergy
$3.68
Living Death-1% Synergy
$2.19
Diabolic Intent-3% Synergy
$16.10
Read the Bones-4% Synergy
$0.31
Insatiable Avarice-4% Synergy
$5.63
Damnation-6% Synergy
$21.38
Mutilate-11% Synergy
$1.97
Night's Whisper-12% Synergy
$0.31
Sign in Blood-14% Synergy
$2.85
Victimize-18% Synergy
$2.02
Exsanguinate-18% Synergy
$0.38
Toxic Deluge-28% Synergy
$4.98
Feed the Swarm-28% Synergy
$0.33
Reanimate-30% Synergy
$8.59
Utility Artifacts
Artifacts that add consistency and utility to Karumonix, the Rat King Relentless Rats decks.
Coat of Arms+22% Synergy
$17.99
Chronicle of Victory+22% Synergy
$19.63
Door of Destinies+21% Synergy
$10.94
Banner of Kinship+19% Synergy
$5.68
Contagion Clasp+13% Synergy
$0.37
Icon of Ancestry+9% Synergy
$0.32
Contagion Engine+8% Synergy
$16.73
Akroma's Memorial+8% Synergy
$33.67
Whip of Erebos+7% Synergy
$6.79
Eldrazi Monument+7% Synergy
$7.56
Grafted Exoskeleton+7% Synergy
$5.25
Prosthetic Injector+7% Synergy
$0.11
Obelisk of Urd+5% Synergy
$3.19
Skullclamp-2% Synergy
$6.62
Ashnod's Altar-12% Synergy
$15.31
The Darkness Crystal-15% Synergy
$4.97
Swiftfoot Boots-16% Synergy
$2.99
Lightning Greaves-21% Synergy
$3.93
Enchantments
Enchantments that reinforce the Relentless Rats strategy in Karumonix, the Rat King decks.
Bad Moon+20% Synergy
$1.72
Necrogen Communion+20% Synergy
$0.33
Cover of Darkness+19% Synergy
$18.09
Phyresis+13% Synergy
$3.18
Oversold Cemetery+8% Synergy
$2.58
Haunted One+7% Synergy
$5.99
Tribute to Horobi+7% Synergy
$0.26
Dark Prophecy+6% Synergy
$6.30
Lord Skitter's Blessing+6% Synergy
$0.41
Sothera, the Supervoid+2% Synergy
$3.11
Vampiric Rites+1% Synergy
$0.17
Black Market-3% Synergy
$5.25
Dictate of Erebos-3% Synergy
$18.56
Grave Pact-5% Synergy
$29.50
Phyrexian Reclamation-5% Synergy
$2.52
Black Market Connections-8% Synergy
$18.31
The Meathook Massacre-10% Synergy
$24.87
Planeswalkers
Planeswalkers that back up Karumonix, the Rat King's Relentless Rats game plan.
Vraska, Betrayal's Sting+20% Synergy
$0.97
Liliana of the Dark Realms-1% Synergy
$11.60
Utility Lands
Non-basic lands that pull extra weight in Karumonix, the Rat King Relentless Rats decks.
Swarmyard+35% Synergy
$4.74
Karn's Bastion+25% Synergy
$2.16
Mudflat Village+19% Synergy
$0.33
Three Tree City+17% Synergy
$24.13
Rogue's Passage+11% Synergy
$0.36
Mortuary Mire+5% Synergy
$0.35
Secret Tunnel+5% Synergy
$2.74
Access Tunnel+4% Synergy
$0.38
Shizo, Death's Storehouse-1% Synergy
$38.10
Crypt of Agadeem-2% Synergy
$1.85
Barren Moor-2% Synergy
$0.37
Witch's Cottage-4% Synergy
$1.00
Reliquary Tower-7% Synergy
$2.76
Castle Locthwain-7% Synergy
$4.00
Nykthos, Shrine to Nyx-8% Synergy
$49.84
War Room-8% Synergy
$1.99
Cabal Stronghold-9% Synergy
$13.47
Urborg, Tomb of Yawgmoth-10% Synergy
$57.13
Takenuma, Abandoned Mire-10% Synergy
$11.57
Phyrexian Tower-11% Synergy
$26.16
Cabal Coffers-12% Synergy
$29.69
Bojuka Bog-14% Synergy
$0.63
Mana Artifacts
Mana rocks and fixing to power out Karumonix, the Rat King's Relentless Rats strategy.
Patchwork Banner+22% Synergy
$1.91
Glistening Sphere+18% Synergy
$14.80
Phyrexian Atlas+10% Synergy
$0.25
Heraldic Banner+8% Synergy
$0.33
Staff of Compleation+7% Synergy
$4.17
Caged Sun+5% Synergy
$3.83
Gauntlet of Power+5% Synergy
$3.70
Commander's Sphere0% Synergy
$0.25
Extraplanar Lens0% Synergy
$11.33
Charcoal Diamond-4% Synergy
$0.32
Throne of Eldraine-4% Synergy
$36.37
Thought Vessel-7% Synergy
$2.60
The Soul Stone-9% Synergy
$84.04
Fellwar Stone-9% Synergy
$0.60
Mind Stone-14% Synergy
$0.34
Sol Ring-17% Synergy
$1.40
Arcane Signet-21% Synergy
$0.46
Lands
The mana base behind Karumonix, the Rat King's Relentless Rats decks.
Path of Ancestry+18% Synergy
$0.32
Big Apple, 3 a.m.+8% Synergy
$0.39
Command Tower+6% Synergy
$0.25
Cavern of Souls+5% Synergy
$49.78
Vibrant Cityscape+5% Synergy
$0.35
Daily Bugle Building+5% Synergy
$0.29
Command Bridge+5% Synergy
$0.21
Swamp+4% Synergy
$0.07
Evolving Wilds+3% Synergy
$0.39
Myriad Landscape-13% Synergy
$0.24
Similar Commanders
The following Commanders share a similar playing style, strategy, or theme like Karumonix, the Rat King: Relentless Rats.
Wick, the Whorled Mind
Marrow-Gnawer
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
Ob Nixilis, the Fallen
Totentanz, Swarm Piper
He Who Hungers
Shauku, Endbringer
The Meep
Massacre Girl
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
Jaheira, Friend of the Forest // Agent of the Shadow Thieves
Gonti, Lord of Luxury
Rev, Tithe Extractor
Zodiark, Umbral God
Gix, Yawgmoth Praetor
Lobelia, Defender of Bag End
Massacre Girl, Known Killer
Nashi, Moon's Legacy
Starscream, Power Hungry
Sengir, the Dark Baron // Siani, Eye of the Storm
Jecht, Reluctant Guardian