Average Deck for Koma, Cosmos Serpent - Expensive Sea Creatures
Alternate Names:
The Monstrous SerpentThe Monstrous Serpent
Koma, Cosmos Serpent
Rank #342
12decks
Mar 12, 2026
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Decklist
Commander
- 1Koma, Cosmos SerpentKoma, Cosmos Serpent
Creatures (23)
- 1Adrix and Nev, TwincastersAdrix and Nev, Twincasters
- 1Aesi, Tyrant of Gyre StraitAesi, Tyrant of Gyre Strait
- 1Arixmethes, Slumbering IsleArixmethes, Slumbering Isle
- 1BIRDS OF PARADISEBIRDS OF PARADISE
- 1Breaching LeviathanBreaching Leviathan
- 1Chameleon, Master of DisguiseChameleon, Master of Disguise
- 1Craterhoof BehemothCraterhoof Behemoth
- 1Enduring VitalityEnduring Vitality
- 1Hullbreaker HorrorHullbreaker Horror
- 1Kiora, Sovereign of the DeepKiora, Sovereign of the Deep
- 1Koma, World-EaterKoma, World-Eater
- 1LLANOWAR ELVESLLANOWAR ELVES
- 1Murkfiend LiegeMurkfiend Liege
- 1Nezahal, Primal TideNezahal, Primal Tide
- 1Sakashima of a Thousand FacesSakashima of a Thousand Faces
- 1Sakashima the ImpostorSakashima the Impostor
- 1Scourge of FleetsScourge of Fleets
- 1Seedborn MuseSeedborn Muse
- 1Serpent of Yawning DepthsSerpent of Yawning Depths
- 1Shrouded SerpentShrouded Serpent
- 1Slinn Voda, the Rising DeepSlinn Voda, the Rising Deep
- 1Spark DoubleSpark Double
- 1Spawning KrakenSpawning Kraken
Instants (15)
- 1An Offer You Can't RefuseAn Offer You Can't Refuse
- 1Beast WithinBeast Within
- 1CounterspellCounterspell
- 1Cyclonic RiftCyclonic Rift
- 1Fierce GuardianshipFierce Guardianship
- 1Force of WillForce of Will
- 1Heroic InterventionHeroic Intervention
- 1Mana DrainMana Drain
- 1Mystical TutorMystical Tutor
- 1Nature's ClaimNature's Claim
- 1Second HarvestSecond Harvest
- 1Simic CharmSimic Charm
- 1Sink into StuporSink into Stupor
- 1Stubborn DenialStubborn Denial
- 1Worldly TutorWorldly Tutor
Sorceries (11)
- 1CultivateCultivate
- 1FarseekFarseek
- 1Irenicus's Vile DuplicationIrenicus's Vile Duplication
- 1Kodama's ReachKodama's Reach
- 1Nature's LoreNature's Lore
- 1Quantum MisalignmentQuantum Misalignment
- 1Rampant GrowthRampant Growth
- 1Sea Gate RestorationSea Gate Restoration
- 1Skyshroud ClaimSkyshroud Claim
- 1Three VisitsThree Visits
- 1Whelming WaveWhelming Wave
Artifacts (7)
- 1Arcane SignetArcane Signet
- 1Helm of the HostHelm of the Host
- 1Kefnet's MonumentKefnet's Monument
- 1Lightning GreavesLightning Greaves
- 1Sapphire MedallionSapphire Medallion
- 1Sol RingSol Ring
- 1Talisman of CuriosityTalisman of Curiosity
Enchantments (10)
- 1Cryptolith RiteCryptolith Rite
- 1Defense of the HeartDefense of the Heart
- 1Doubling SeasonDoubling Season
- 1Elemental BondElemental Bond
- 1Kindred DiscoveryKindred Discovery
- 1Ominous SeasOminous Seas
- 1Parallel LivesParallel Lives
- 1Rhystic StudyRhystic Study
- 1Sylvan LibrarySylvan Library
- 1Tribute to the World TreeTribute to the World Tree
Lands (33)
- 1Ancient TombAncient Tomb
- 1Barkchannel PathwayBarkchannel Pathway
- 1Boseiju, Who EnduresBoseiju, Who Endures
- 1Breeding PoolBreeding Pool
- 1Castle GarenbrigCastle Garenbrig
- 1Command TowerCommand Tower
- 1Evendo, Waking HavenEvendo, Waking Haven
- 1Flooded GroveFlooded Grove
- 7ForestForest
- 1Gaea's CradleGaea's Cradle
- 1Hedge MazeHedge Maze
- 1Hinterland HarborHinterland Harbor
- 8IslandIsland
- 1Misty RainforestMisty Rainforest
- 1Otawara, Soaring CityOtawara, Soaring City
- 1RELIQUARY TOWERRELIQUARY TOWER
- 1Rejuvenating SpringsRejuvenating Springs
- 1Tropical IslandTropical Island
- 1Waterlogged GroveWaterlogged Grove
- 1Yavimaya, Cradle of GrowthYavimaya, Cradle of Growth
Adrix and Nev, Twincasters
Adrix and Nev, Twincasters
Aesi, Tyrant of Gyre Strait
Aesi, Tyrant of Gyre Strait
Arixmethes, Slumbering Isle
Arixmethes, Slumbering Isle
BIRDS OF PARADISE
BIRDS OF PARADISE
Breaching Leviathan
Breaching Leviathan
Chameleon, Master of Disguise
Chameleon, Master of Disguise
Craterhoof Behemoth
Craterhoof Behemoth
Enduring Vitality
Enduring Vitality
Hullbreaker Horror
Hullbreaker Horror
Kiora, Sovereign of the Deep
Kiora, Sovereign of the Deep
Koma, World-Eater
Koma, World-Eater
LLANOWAR ELVES
LLANOWAR ELVES
Murkfiend Liege
Murkfiend Liege
Nezahal, Primal Tide
Nezahal, Primal Tide
Sakashima of a Thousand Faces
Sakashima of a Thousand Faces
Sakashima the Impostor
Sakashima the Impostor
Scourge of Fleets
Scourge of Fleets
Seedborn Muse
Seedborn Muse
Serpent of Yawning Depths
Serpent of Yawning Depths
Shrouded Serpent
Shrouded Serpent
Slinn Voda, the Rising Deep
Slinn Voda, the Rising Deep
Spark Double
Spark Double
Spawning Kraken
Spawning Kraken
Instants (15)
An Offer You Can't Refuse
An Offer You Can't Refuse
Beast Within
Beast Within
Counterspell
Counterspell
Cyclonic Rift
Cyclonic Rift
Fierce Guardianship
Fierce Guardianship
Force of Will
Force of Will
Heroic Intervention
Heroic Intervention
Mana Drain
Mana Drain
Mystical Tutor
Mystical Tutor
Nature's Claim
Nature's Claim
Second Harvest
Second Harvest
Simic Charm
Simic Charm
Sink into Stupor
Sink into Stupor
Stubborn Denial
Stubborn Denial
Worldly Tutor
Worldly Tutor
Sorceries (11)
Cultivate
Cultivate
Farseek
Farseek
Irenicus's Vile Duplication
Irenicus's Vile Duplication
Kodama's Reach
Kodama's Reach
Nature's Lore
Nature's Lore
Quantum Misalignment
Quantum Misalignment
Rampant Growth
Rampant Growth
Sea Gate Restoration
Sea Gate Restoration
Skyshroud Claim
Skyshroud Claim
Three Visits
Three Visits
Whelming Wave
Whelming Wave
Artifacts (7)
Arcane Signet
Arcane Signet
Helm of the Host
Helm of the Host
Kefnet's Monument
Kefnet's Monument
Lightning Greaves
Lightning Greaves
Sapphire Medallion
Sapphire Medallion
Sol Ring
Sol Ring
Talisman of Curiosity
Talisman of Curiosity
Enchantments (10)
Cryptolith Rite
Cryptolith Rite
Defense of the Heart
Defense of the Heart
Doubling Season
Doubling Season
Elemental Bond
Elemental Bond
Kindred Discovery
Kindred Discovery
Ominous Seas
Ominous Seas
Parallel Lives
Parallel Lives
Rhystic Study
Rhystic Study
Sylvan Library
Sylvan Library
Tribute to the World Tree
Tribute to the World Tree
Lands (18)
Ancient Tomb
Ancient Tomb
Barkchannel Pathway
Barkchannel Pathway
Boseiju, Who Endures
Boseiju, Who Endures
Breeding Pool
Breeding Pool
Castle Garenbrig
Castle Garenbrig
Command Tower
Command Tower
Evendo, Waking Haven
Evendo, Waking Haven
Flooded Grove
Flooded Grove
Gaea's Cradle
Gaea's Cradle
Hedge Maze
Hedge Maze
Hinterland Harbor
Hinterland Harbor
Misty Rainforest
Misty Rainforest
Otawara, Soaring City
Otawara, Soaring City
Rejuvenating Springs
Rejuvenating Springs
RELIQUARY TOWER
RELIQUARY TOWER
Tropical Island
Tropical Island
Waterlogged Grove
Waterlogged Grove
Yavimaya, Cradle of Growth
Yavimaya, Cradle of Growth
Basics (2)
Forest
7 Forest
Island
8 Island