Average Deck for Koma, Cosmos Serpent - Expensive Clones

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent

Rank #296

29decks

As Commander As Card Average Deck Decks

Bracket

All 1 2 3 4 5

Budget

Any $$$$

How To Play Sea Creatures Differently In Commander

Sea creatures in Magic are basically as old as the game itself, but they've changed significantly in that time.

Background image for Can You Build Simic in Commander Without... Going Simic?

Aug 6, 2025

Arnaud Gompertz

Can You Build Simic in Commander Without... Going Simic?

Can you go Simic without doing the Simic stuff that everyone dreads? Yes you can! Arnaud is here with some uncanny Commander deck ideas.

Average Decklist

Koma, Cosmos Serpent

Buy at Card Kingdom

Buy at TCGPlayer

Buy at Manapool

Playtest on Archidekt

- 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 Ancient TombAncient Tomb
- 1 Arcane SignetArcane Signet
- 1 Auton SoldierAuton Soldier
- 1 Barkchannel PathwayBarkchannel Pathway
- 1 Beast WithinBeast Within
- 1 Birds of ParadiseBirds of Paradise
- 1 Boseiju, Who EnduresBoseiju, Who Endures
- 1 Breeding PoolBreeding Pool
- 1 Cackling CounterpartCackling Counterpart
- 1 Clever ImpersonatorClever Impersonator
- 1 CloneClone
- 1 Command BeaconCommand Beacon
- 1 Command TowerCommand Tower
- 1 CounterspellCounterspell
- 1 Craterhoof BehemothCraterhoof Behemoth
- 1 CultivateCultivate
- 1 Cyclonic RiftCyclonic Rift
- 1 Double MajorDouble Major
- 1 Doubling SeasonDoubling Season
- 1 Dreamroot CascadeDreamroot Cascade
- 1 Elemental BondElemental Bond
- 1 Evendo, Waking HavenEvendo, Waking Haven
- 1 Extravagant ReplicationExtravagant Replication
- 1 FarseekFarseek
- 1 Fierce GuardianshipFierce Guardianship
- 1 Force of WillForce of Will
- 6 ForestForest
- 1 Fyndhorn ElvesFyndhorn Elves
- 1 Gaea's CradleGaea's Cradle
- 1 Glasspool MimicGlasspool Mimic
- 1 Growth SpiralGrowth Spiral
- 1 Helm of the HostHelm of the Host
- 1 Heroic InterventionHeroic Intervention
- 1 Hinterland HarborHinterland Harbor
- 1 Irenicus's Vile DuplicationIrenicus's Vile Duplication
- 6 IslandIsland
- 1 Junk WinderJunk Winder
- 1 Kodama's ReachKodama's Reach
- 1 Koma, World-EaterKoma, World-Eater
- 1 Lightning GreavesLightning Greaves
- 1 Llanowar ElvesLlanowar Elves
- 1 Mana DrainMana Drain
- 1 Mirror BoxMirror Box
- 1 Mirror GalleryMirror Gallery
- 1 Misty RainforestMisty Rainforest
- 1 Murkfiend LiegeMurkfiend Liege
- 1 Mystic RemoraMystic Remora
- 1 Mystic SanctuaryMystic Sanctuary
- 1 Mystical TutorMystical Tutor
- 1 Nature's LoreNature's Lore
- 1 Oko, Thief of CrownsOko, Thief of Crowns
- 1 Otawara, Soaring CityOtawara, Soaring City
- 1 Parallel LivesParallel Lives
- 1 Phyrexian MetamorphPhyrexian Metamorph
- 1 Primal VigorPrimal Vigor
- 1 Progenitor MimicProgenitor Mimic
- 1 Quantum MisalignmentQuantum Misalignment
- 1 Rampant GrowthRampant Growth
- 1 Rejuvenating SpringsRejuvenating Springs
- 1 Reliquary TowerReliquary Tower
- 1 Rhystic StudyRhystic Study
- 1 Rite of ReplicationRite of Replication
- 1 Roaming ThroneRoaming Throne
- 1 Sakashima of a Thousand FacesSakashima of a Thousand Faces
- 1 Sakashima the ImpostorSakashima the Impostor
- 1 Second HarvestSecond Harvest
- 1 Seedborn MuseSeedborn Muse
- 1 Serpent of Yawning DepthsSerpent of Yawning Depths
- 1 Simic Growth ChamberSimic Growth Chamber
- 1 Simic SignetSimic Signet
- 1 Skyshroud ClaimSkyshroud Claim
- 1 Snow-Covered IslandSnow-Covered Island
- 1 Sol RingSol Ring
- 1 Spark DoubleSpark Double
- 1 Spawning KrakenSpawning Kraken
- 1 Swan SongSwan Song
- 1 Swiftfoot BootsSwiftfoot Boots
- 1 Sylvan LibrarySylvan Library
- 1 Talisman of CuriosityTalisman of Curiosity
- 1 Three VisitsThree Visits
- 1 Tribute to the World TreeTribute to the World Tree
- 1 Tropical IslandTropical Island
- 1 Whelming WaveWhelming Wave
- 1 Willowrush VergeWillowrush Verge
- 1 Worldly TutorWorldly Tutor
- 1 Yavimaya CoastYavimaya Coast
- 1 Yavimaya, Cradle of GrowthYavimaya, Cradle of Growth

Group by

Sort by

Filters Card Filters

Adrix and Nev, Twincasters

Aesi, Tyrant of Gyre Strait

Auton Soldier

Birds of Paradise

Clever Impersonator

Clone

Craterhoof Behemoth

Fyndhorn Elves

Glasspool Mimic

Junk Winder

Koma, World-Eater

Llanowar Elves

Murkfiend Liege

Phyrexian Metamorph

Progenitor Mimic

Roaming Throne

Sakashima of a Thousand Faces

Sakashima the Impostor

Seedborn Muse

Serpent of Yawning Depths

Spark Double

Spawning Kraken

Instants (14)

Beast Within

Cackling Counterpart

Counterspell

Cyclonic Rift

Double Major

Fierce Guardianship

Force of Will

Growth Spiral

Heroic Intervention

Mana Drain

Mystical Tutor

Second Harvest

Swan Song

Worldly Tutor

Sorceries (11)

Cultivate

Farseek

Irenicus's Vile Duplication

Kodama's Reach

Nature's Lore

Quantum Misalignment

Rampant Growth

Rite of Replication

Skyshroud Claim

Three Visits

Whelming Wave

Artifacts (9)

Arcane Signet

Helm of the Host

Lightning Greaves

Mirror Box

Mirror Gallery

Simic Signet

Sol Ring

Swiftfoot Boots

Talisman of Curiosity

Enchantments (9)

Doubling Season

Elemental Bond

Extravagant Replication

Mystic Remora

Parallel Lives

Primal Vigor

Rhystic Study

Sylvan Library

Tribute to the World Tree

Planeswalkers (1)

Oko, Thief of Crowns

Lands (20)

Ancient Tomb

Barkchannel Pathway

Boseiju, Who Endures

Breeding Pool

Command Beacon

Command Tower

Dreamroot Cascade

Evendo, Waking Haven

Gaea's Cradle

Hinterland Harbor

Misty Rainforest

Mystic Sanctuary

Otawara, Soaring City

Rejuvenating Springs

Reliquary Tower

Simic Growth Chamber

Tropical Island

Willowrush Verge

Yavimaya Coast

Yavimaya, Cradle of Growth

Basics (3)

Forest

6 Forests

Island

6 Islands

Snow-Covered Island

1 Snow-Covered Island