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Average Deck for Koma, Cosmos Serpent - Upgraded Sea Creatures
Alternate Names:
The Monstrous SerpentThe Monstrous Serpent
Koma, Cosmos Serpent
Rank #322
12decks
Mar 12, 2026
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Average Decklist
- 1 Koma, Cosmos SerpentKoma, Cosmos Serpent
- 1 Adrix and Nev, TwincastersAdrix and Nev, Twincasters
- 1 Aesi, Tyrant of Gyre StraitAesi, Tyrant of Gyre Strait
- 1 An Offer You Can't RefuseAn Offer You Can't Refuse
- 1 Arcane DenialArcane Denial
- 1 Arcane SignetArcane Signet
- 1 Arixmethes, Slumbering IsleArixmethes, Slumbering Isle
- 1 Beast WithinBeast Within
- 1 Birds of ParadiseBirds of Paradise
- 1 Breeding PoolBreeding Pool
- 1 Command TowerCommand Tower
- 1 CounterspellCounterspell
- 1 Craterhoof BehemothCraterhoof Behemoth
- 1 CultivateCultivate
- 1 Double MajorDouble Major
- 1 Doubling SeasonDoubling Season
- 1 Dreamroot CascadeDreamroot Cascade
- 1 Elemental BondElemental Bond
- 1 Eternal WitnessEternal Witness
- 1 FarseekFarseek
- 1 Flooded GroveFlooded Grove
- 10 ForestForest
- 1 Gala GreetersGala Greeters
- 1 Garruk's PackleaderGarruk's Packleader
- 1 Growth SpiralGrowth Spiral
- 1 Helm of the HostHelm of the Host
- 1 Heroic InterventionHeroic Intervention
- 1 Hinterland HarborHinterland Harbor
- 1 Hullbreaker HorrorHullbreaker Horror
- 1 Irenicus's Vile DuplicationIrenicus's Vile Duplication
- 11 IslandIsland
- 1 Junk WinderJunk Winder
- 1 Kindred DiscoveryKindred Discovery
- 1 Kodama's ReachKodama's Reach
- 1 Koma, World-EaterKoma, World-Eater
- 1 Lightning GreavesLightning Greaves
- 1 Llanowar ElvesLlanowar Elves
- 1 Migration PathMigration Path
- 1 Misty RainforestMisty Rainforest
- 1 Mystic SanctuaryMystic Sanctuary
- 1 Nature's ClaimNature's Claim
- 1 Nature's LoreNature's Lore
- 1 NegateNegate
- 1 Parallel LivesParallel Lives
- 1 Planar GenesisPlanar Genesis
- 1 PonderPonder
- 1 PongifyPongify
- 1 Quantum MisalignmentQuantum Misalignment
- 1 Rampant GrowthRampant Growth
- 1 Rejuvenating SpringsRejuvenating Springs
- 1 Reliquary TowerReliquary Tower
- 1 Return of the WildspeakerReturn of the Wildspeaker
- 1 Rhystic StudyRhystic Study
- 1 Sakashima of a Thousand FacesSakashima of a Thousand Faces
- 1 Sakashima the ImpostorSakashima the Impostor
- 1 Sakura-Tribe ElderSakura-Tribe Elder
- 1 Second HarvestSecond Harvest
- 1 Seedborn MuseSeedborn Muse
- 1 Serpent of Yawning DepthsSerpent of Yawning Depths
- 1 Simic CharmSimic Charm
- 1 Simic Growth ChamberSimic Growth Chamber
- 1 Skyshroud ClaimSkyshroud Claim
- 1 Snakeskin VeilSnakeskin Veil
- 1 Sol RingSol Ring
- 1 Spark DoubleSpark Double
- 1 Spawning KrakenSpawning Kraken
- 1 Stubborn DenialStubborn Denial
- 1 Swiftfoot BootsSwiftfoot Boots
- 1 Tangled IsletTangled Islet
- 1 Tatyova, Benthic DruidTatyova, Benthic Druid
- 1 Temple of the False GodTemple of the False God
- 1 Thought VesselThought Vessel
- 1 Three VisitsThree Visits
- 1 Tribute to the World TreeTribute to the World Tree
- 1 Utopia SprawlUtopia Sprawl
- 1 Vineglimmer SnarlVineglimmer Snarl
- 1 Whelming WaveWhelming Wave
- 1 Wilderness ReclamationWilderness Reclamation
- 1 Willowrush VergeWillowrush Verge
- 1 Yavimaya CoastYavimaya Coast
- 1 Yavimaya, 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
Craterhoof Behemoth
Craterhoof Behemoth
Eternal Witness
Eternal Witness
Gala Greeters
Gala Greeters
Garruk's Packleader
Garruk's Packleader
Hullbreaker Horror
Hullbreaker Horror
Junk Winder
Junk Winder
Koma, World-Eater
Koma, World-Eater
Llanowar Elves
Llanowar Elves
Sakashima of a Thousand Faces
Sakashima of a Thousand Faces
Sakashima the Impostor
Sakashima the Impostor
Sakura-Tribe Elder
Sakura-Tribe Elder
Seedborn Muse
Seedborn Muse
Serpent of Yawning Depths
Serpent of Yawning Depths
Spark Double
Spark Double
Spawning Kraken
Spawning Kraken
Tatyova, Benthic Druid
Tatyova, Benthic Druid
Instants (16)
An Offer You Can't Refuse
An Offer You Can't Refuse
Arcane Denial
Arcane Denial
Beast Within
Beast Within
Counterspell
Counterspell
Double Major
Double Major
Growth Spiral
Growth Spiral
Heroic Intervention
Heroic Intervention
Nature's Claim
Nature's Claim
Negate
Negate
Planar Genesis
Planar Genesis
Pongify
Pongify
Return of the Wildspeaker
Return of the Wildspeaker
Second Harvest
Second Harvest
Simic Charm
Simic Charm
Snakeskin Veil
Snakeskin Veil
Stubborn Denial
Stubborn Denial
Sorceries (12)
Cultivate
Cultivate
Farseek
Farseek
Irenicus's Vile Duplication
Irenicus's Vile Duplication
Kodama's Reach
Kodama's Reach
Migration Path
Migration Path
Nature's Lore
Nature's Lore
Ponder
Ponder
Quantum Misalignment
Quantum Misalignment
Rampant Growth
Rampant Growth
Skyshroud Claim
Skyshroud Claim
Three Visits
Three Visits
Whelming Wave
Whelming Wave
Artifacts (6)
Arcane Signet
Arcane Signet
Helm of the Host
Helm of the Host
Lightning Greaves
Lightning Greaves
Sol Ring
Sol Ring
Swiftfoot Boots
Swiftfoot Boots
Thought Vessel
Thought Vessel
Enchantments (8)
Doubling Season
Doubling Season
Elemental Bond
Elemental Bond
Kindred Discovery
Kindred Discovery
Parallel Lives
Parallel Lives
Rhystic Study
Rhystic Study
Tribute to the World Tree
Tribute to the World Tree
Utopia Sprawl
Utopia Sprawl
Wilderness Reclamation
Wilderness Reclamation
Lands (16)
Breeding Pool
Breeding Pool
Command Tower
Command Tower
Dreamroot Cascade
Dreamroot Cascade
Flooded Grove
Flooded Grove
Hinterland Harbor
Hinterland Harbor
Misty Rainforest
Misty Rainforest
Mystic Sanctuary
Mystic Sanctuary
Rejuvenating Springs
Rejuvenating Springs
Reliquary Tower
Reliquary Tower
Simic Growth Chamber
Simic Growth Chamber
Tangled Islet
Tangled Islet
Temple of the False God
Temple of the False God
Vineglimmer Snarl
Vineglimmer Snarl
Willowrush Verge
Willowrush Verge
Yavimaya Coast
Yavimaya Coast
Yavimaya, Cradle of Growth
Yavimaya, Cradle of Growth
Basics (2)
Forest
10 Forests
Island
11 Islands