Average Deck for Koma, Cosmos Serpent - Expensive Stax

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 Arcane DenialArcane Denial
- 1 Arixmethes, Slumbering IsleArixmethes, Slumbering Isle
- 1 Ashnod's AltarAshnod's Altar
- 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 Boseiju, Who Shelters AllBoseiju, Who Shelters All
- 1 Breeding PoolBreeding Pool
- 1 Command BeaconCommand Beacon
- 1 Command TowerCommand Tower
- 1 CounterspellCounterspell
- 1 CrawlspaceCrawlspace
- 1 CultivateCultivate
- 1 Cursed TotemCursed Totem
- 1 Cyclonic RiftCyclonic Rift
- 1 Decanter of Endless WaterDecanter of Endless Water
- 1 Defense GridDefense Grid
- 1 Delighted HalflingDelighted Halfling
- 1 Displacer KittenDisplacer Kitten
- 1 Eldritch EvolutionEldritch Evolution
- 1 Emergence ZoneEmergence Zone
- 1 Energy FluxEnergy Flux
- 1 Esix, Fractal BloomEsix, Fractal Bloom
- 1 ExpropriateExpropriate
- 1 FarseekFarseek
- 1 Fierce GuardianshipFierce Guardianship
- 1 Finale of DevastationFinale of Devastation
- 1 FlusterstormFlusterstorm
- 1 Force of NegationForce of Negation
- 1 Force of WillForce of Will
- 9 ForestForest
- 1 Gaea's CradleGaea's Cradle
- 1 Garruk's PackleaderGarruk's Packleader
- 1 Gemstone CavernsGemstone Caverns
- 1 God-Pharaoh's StatueGod-Pharaoh's Statue
- 1 Grafdigger's CageGrafdigger's Cage
- 1 Grim MonolithGrim Monolith
- 1 Heroic InterventionHeroic Intervention
- 9 IslandIsland
- 1 Jeweled LotusJeweled Lotus
- 1 Junk WinderJunk Winder
- 1 Karn LiberatedKarn Liberated
- 1 Koma, World-EaterKoma, World-Eater
- 1 Lotus PetalLotus Petal
- 1 Mana CryptMana Crypt
- 1 Mana DrainMana Drain
- 1 Mana LeakMana Leak
- 1 Mana VaultMana Vault
- 1 Mindbreak TrapMindbreak Trap
- 1 Mindlock OrbMindlock Orb
- 1 Mistrise VillageMistrise Village
- 1 Mystic RemoraMystic Remora
- 1 Nature's LoreNature's Lore
- 1 Nykthos, Shrine to NyxNykthos, Shrine to Nyx
- 1 Parallel LivesParallel Lives
- 1 Peregrine DrakePeregrine Drake
- 1 Phyrexian AltarPhyrexian Altar
- 1 Rejuvenating SpringsRejuvenating Springs
- 1 Reliquary TowerReliquary Tower
- 1 Rhystic StudyRhystic Study
- 1 Sakashima of a Thousand FacesSakashima of a Thousand Faces
- 1 Sol RingSol Ring
- 1 SpellskiteSpellskite
- 1 StasisStasis
- 1 Swan SongSwan Song
- 1 Sylvan LibrarySylvan Library
- 1 Sylvan SafekeeperSylvan Safekeeper
- 1 Temporal ManipulationTemporal Manipulation
- 1 The Great HengeThe Great Henge
- 1 The Millennium CalendarThe Millennium Calendar
- 1 The One RingThe One Ring
- 1 The Tabernacle at Pendrell ValeThe Tabernacle at Pendrell Vale
- 1 Three VisitsThree Visits
- 1 Tropical IslandTropical Island
- 1 Urza's SagaUrza's Saga
- 1 Vexing BaubleVexing Bauble
- 1 Vorinclex, Voice of HungerVorinclex, Voice of Hunger
- 1 Winter OrbWinter Orb
- 1 Wooded FoothillsWooded Foothills
- 1 Worldly TutorWorldly Tutor

Group by

Sort by

Filters Card Filters

Aesi, Tyrant of Gyre Strait

Arixmethes, Slumbering Isle

Birds of Paradise

Delighted Halfling

Displacer Kitten

Esix, Fractal Bloom

Garruk's Packleader

Junk Winder

Koma, World-Eater

Peregrine Drake

Sakashima of a Thousand Faces

Spellskite

Sylvan Safekeeper

Vorinclex, Voice of Hunger

Instants (16)

An Offer You Can't Refuse

Arcane Denial

Beast Within

Borne Upon a Wind

Counterspell

Cyclonic Rift

Fierce Guardianship

Flusterstorm

Force of Negation

Force of Will

Heroic Intervention

Mana Drain

Mana Leak

Mindbreak Trap

Swan Song

Worldly Tutor

Sorceries (8)

Cultivate

Eldritch Evolution

Expropriate

Farseek

Finale of Devastation

Nature's Lore

Temporal Manipulation

Three Visits

Artifacts (20)

Ashnod's Altar

Crawlspace

Cursed Totem

Decanter of Endless Water

Defense Grid

God-Pharaoh's Statue

Grafdigger's Cage

Grim Monolith

Jeweled Lotus

Lotus Petal

Mana Crypt

Mana Vault

Mindlock Orb

Phyrexian Altar

Sol Ring

The Great Henge

The Millennium Calendar

The One Ring

Vexing Bauble

Winter Orb

Enchantments (6)

Energy Flux

Mystic Remora

Parallel Lives

Rhystic Study

Stasis

Sylvan Library

Planeswalkers (1)

Karn Liberated

Lands (16)

Boseiju, Who Endures

Boseiju, Who Shelters All

Breeding Pool

Command Beacon

Command Tower

Emergence Zone

Gaea's Cradle

Gemstone Caverns

Mistrise Village

Nykthos, Shrine to Nyx

Rejuvenating Springs

Reliquary Tower

The Tabernacle at Pendrell Vale

Tropical Island

Urza's Saga

Wooded Foothills

Basics (2)

Forest

9 Forests

Island

9 Islands