Average Deck for Koma, Cosmos Serpent - Expensive Aggro

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent

Rank #298

2decks

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 Aesi, Tyrant of Gyre StraitAesi, Tyrant of Gyre Strait
- 1 An Offer You Can't RefuseAn Offer You Can't Refuse
- 1 Ancient TombAncient Tomb
- 1 Arcane DenialArcane Denial
- 1 Arcane SignetArcane Signet
- 1 Archdruid's CharmArchdruid's Charm
- 1 Beast WithinBeast Within
- 1 Birds of ParadiseBirds of Paradise
- 1 Borne Upon a WindBorne Upon a Wind
- 1 Boseiju, Who EnduresBoseiju, Who Endures
- 1 Breeding PoolBreeding Pool
- 1 City of BrassCity of Brass
- 1 Command BeaconCommand Beacon
- 1 Command TowerCommand Tower
- 1 Consecrated SphinxConsecrated Sphinx
- 1 CounterspellCounterspell
- 1 Craterhoof BehemothCraterhoof Behemoth
- 1 Crop RotationCrop Rotation
- 1 Cyclonic RiftCyclonic Rift
- 1 Defense of the HeartDefense of the Heart
- 1 Dreamroot CascadeDreamroot Cascade
- 1 Eldritch EvolutionEldritch Evolution
- 1 Elemental BondElemental Bond
- 1 Emergence ZoneEmergence Zone
- 1 Esix, Fractal BloomEsix, Fractal Bloom
- 1 Fellwar StoneFellwar Stone
- 1 Fierce GuardianshipFierce Guardianship
- 1 Finale of DevastationFinale of Devastation
- 1 FlusterstormFlusterstorm
- 1 Force of VigorForce of Vigor
- 1 Force of WillForce of Will
- 2 ForestForest
- 1 Gaea's CradleGaea's Cradle
- 1 Gemstone CavernsGemstone Caverns
- 1 Hedge MazeHedge Maze
- 1 Helm of the HostHelm of the Host
- 1 Heroic InterventionHeroic Intervention
- 1 Hullbreaker HorrorHullbreaker Horror
- 1 Ilysian CaryatidIlysian Caryatid
- 1 Incubation DruidIncubation Druid
- 2 IslandIsland
- 1 Junk WinderJunk Winder
- 1 Kindred DiscoveryKindred Discovery
- 1 Kinnan, Bonder ProdigyKinnan, Bonder Prodigy
- 1 Kiora's FollowerKiora's Follower
- 1 Krosan GripKrosan Grip
- 1 Legolas's Quick ReflexesLegolas's Quick Reflexes
- 1 Mana ConfluenceMana Confluence
- 1 Mana VaultMana Vault
- 1 Mindbreak TrapMindbreak Trap
- 1 Misty RainforestMisty Rainforest
- 1 Mystic RemoraMystic Remora
- 1 Mystical TutorMystical Tutor
- 1 NegateNegate
- 1 Nykthos, Shrine to NyxNykthos, Shrine to Nyx
- 1 Otawara, Soaring CityOtawara, Soaring City
- 1 Overwhelming StampedeOverwhelming Stampede
- 1 Pact of NegationPact of Negation
- 1 Parallel LivesParallel Lives
- 1 Phantasmal ImagePhantasmal Image
- 1 Phyrexian AltarPhyrexian Altar
- 1 Phyrexian MetamorphPhyrexian Metamorph
- 1 Quantum MisalignmentQuantum Misalignment
- 1 Rejuvenating SpringsRejuvenating Springs
- 1 Reliquary TowerReliquary Tower
- 1 RewindRewind
- 1 Rhystic StudyRhystic Study
- 1 Sakashima of a Thousand FacesSakashima of a Thousand Faces
- 1 Seedborn MuseSeedborn Muse
- 3 Snow-Covered ForestSnow-Covered Forest
- 3 Snow-Covered IslandSnow-Covered Island
- 1 Sol RingSol Ring
- 1 Spark DoubleSpark Double
- 1 StifleStifle
- 1 Swan SongSwan Song
- 1 Sylvan LibrarySylvan Library
- 1 Sylvan SafekeeperSylvan Safekeeper
- 1 Talisman of CuriosityTalisman of Curiosity
- 1 Temporal ManipulationTemporal Manipulation
- 1 Tempt with DiscoveryTempt with Discovery
- 1 The Great HengeThe Great Henge
- 1 The One RingThe One Ring
- 1 Three Tree CityThree Tree City
- 1 Tribute to the World TreeTribute to the World Tree
- 1 Triumph of the HordesTriumph of the Hordes
- 1 Tropical IslandTropical Island
- 1 Urza's SagaUrza's Saga
- 1 Wandering ArchaicWandering Archaic
- 1 Waterlogged GroveWaterlogged Grove
- 1 Whelming WaveWhelming Wave
- 1 Wooded FoothillsWooded Foothills
- 1 Worldly TutorWorldly Tutor
- 1 Yavimaya, Cradle of GrowthYavimaya, Cradle of Growth

Group by

Sort by

Filters Card Filters

Aesi, Tyrant of Gyre Strait

Birds of Paradise

Consecrated Sphinx

Craterhoof Behemoth

Esix, Fractal Bloom

Hullbreaker Horror

Ilysian Caryatid

Incubation Druid

Junk Winder

Kinnan, Bonder Prodigy

Kiora's Follower

Phantasmal Image

Phyrexian Metamorph

Sakashima of a Thousand Faces

Seedborn Muse

Spark Double

Sylvan Safekeeper

Wandering Archaic

Instants (23)

An Offer You Can't Refuse

Arcane Denial

Archdruid's Charm

Beast Within

Borne Upon a Wind

Counterspell

Crop Rotation

Cyclonic Rift

Fierce Guardianship

Flusterstorm

Force of Vigor

Force of Will

Heroic Intervention

Krosan Grip

Legolas's Quick Reflexes

Mindbreak Trap

Mystical Tutor

Negate

Pact of Negation

Rewind

Stifle

Swan Song

Worldly Tutor

Sorceries (8)

Eldritch Evolution

Finale of Devastation

Overwhelming Stampede

Quantum Misalignment

Temporal Manipulation

Tempt with Discovery

Triumph of the Hordes

Whelming Wave

Artifacts (9)

Arcane Signet

Fellwar Stone

Helm of the Host

Mana Vault

Phyrexian Altar

Sol Ring

Talisman of Curiosity

The Great Henge

The One Ring

Enchantments (8)

Defense of the Heart

Elemental Bond

Kindred Discovery

Mystic Remora

Parallel Lives

Rhystic Study

Sylvan Library

Tribute to the World Tree

Lands (23)

Ancient Tomb

Boseiju, Who Endures

Breeding Pool

City of Brass

Command Beacon

Command Tower

Dreamroot Cascade

Emergence Zone

Gaea's Cradle

Gemstone Caverns

Hedge Maze

Mana Confluence

Misty Rainforest

Nykthos, Shrine to Nyx

Otawara, Soaring City

Rejuvenating Springs

Reliquary Tower

Three Tree City

Tropical Island

Urza's Saga

Waterlogged Grove

Wooded Foothills

Yavimaya, Cradle of Growth

Basics (4)

Forest

2 Forests

Island

2 Islands

Snow-Covered Forest

3 Snow-Covered Forests

Snow-Covered Island

3 Snow-Covered Islands