Koma, Cosmos Serpent (Commander) - Expensive Upgraded

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #298
35decks
Background image for How To Play Sea Creatures Differently In Commander
Sikora
Nov 13, 2025
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.
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Archidekt
Commander Spellbook
Moxfield
Scryfall
Shared Roots
18%inclusion2 decks11 decks
15%synergy
Ember Island Production
9.1%inclusion1 decks11 decks
8%synergy
The Unagi of Kyoshi Island
9.1%inclusion1 decks11 decks
4%synergy
Mutable Explorer
5.6%inclusion1 decks18 decks
5%synergy
High Synergy Cards
Parallel Lives
83%inclusion29 decks35 decks
77%synergy
Sakashima of a Thousand Faces
77%inclusion27 decks35 decks
72%synergy
Adrix and Nev, Twincasters
80%inclusion28 decks35 decks
72%synergy
Sakashima the Impostor
71%inclusion25 decks35 decks
69%synergy
Elemental Bond
74%inclusion26 decks35 decks
69%synergy
Spark Double
77%inclusion27 decks35 decks
68%synergy
Mana Drain
80%inclusion28 decks35 decks
64%synergy
Irenicus's Vile Duplication
66%inclusion23 decks35 decks
60%synergy
Serpent of Yawning Depths
63%inclusion22 decks35 decks
56%synergy
Doubling Season
66%inclusion23 decks35 decks
56%synergy
Top Cards
Nature's Lore
83%inclusion29 decks35 decks
52%synergy
Farseek
80%inclusion28 decks35 decks
55%synergy
Three Visits
74%inclusion26 decks35 decks
51%synergy
Heroic Intervention
71%inclusion25 decks35 decks
41%synergy
Beast Within
66%inclusion23 decks35 decks
16%synergy
Whelming Wave
66%inclusion23 decks35 decks
54%synergy
Rampant Growth
63%inclusion22 decks35 decks
22%synergy
Cultivate
63%inclusion22 decks35 decks
16%synergy
Counterspell
63%inclusion22 decks35 decks
13%synergy
Birds of Paradise
63%inclusion22 decks35 decks
35%synergy
Game Changers
Cyclonic Rift
57%inclusion20 decks35 decks
31%synergy
Gaea's Cradle
49%inclusion17 decks35 decks
41%synergy
Rhystic Study
40%inclusion14 decks35 decks
18%synergy
Fierce Guardianship
37%inclusion13 decks35 decks
20%synergy
Consecrated Sphinx
29%inclusion10 decks35 decks
20%synergy
Ancient Tomb
20%inclusion7 decks35 decks
11%synergy
Seedborn Muse
17%inclusion6 decks35 decks
1%synergy
Worldly Tutor
14%inclusion5 decks35 decks
-1%synergy
The One Ring
11%inclusion4 decks35 decks
4%synergy
Crop Rotation
5.7%inclusion2 decks35 decks
-8%synergy
Creatures
Koma, World-Eater
57%inclusion20 decks35 decks
44%synergy
Llanowar Elves
54%inclusion19 decks35 decks
26%synergy
Craterhoof Behemoth
54%inclusion19 decks35 decks
45%synergy
Aesi, Tyrant of Gyre Strait
49%inclusion17 decks35 decks
31%synergy
Spawning Kraken
49%inclusion17 decks35 decks
41%synergy
Junk Winder
46%inclusion16 decks35 decks
39%synergy
Elvish Mystic
46%inclusion16 decks35 decks
22%synergy
Roaming Throne
40%inclusion14 decks35 decks
32%synergy
Arixmethes, Slumbering Isle
40%inclusion14 decks35 decks
27%synergy
Ohran Frostfang
37%inclusion13 decks35 decks
33%synergy
Chameleon, Master of Disguise
33%inclusion6 decks18 decks
31%synergy
Summon: Leviathan
32%inclusion8 decks25 decks
25%synergy
Fyndhorn Elves
29%inclusion10 decks35 decks
13%synergy
Sakura-Tribe Elder
29%inclusion10 decks35 decks
9%synergy
Fanatic of Rhonas
29%inclusion10 decks35 decks
23%synergy
Garruk's Packleader
26%inclusion9 decks35 decks
23%synergy
Enduring Vitality
26%inclusion9 decks35 decks
18%synergy
Murkfiend Liege
26%inclusion9 decks35 decks
11%synergy
Eternal Witness
26%inclusion9 decks35 decks
5%synergy
Archetype of Imagination
26%inclusion9 decks35 decks
21%synergy
Delighted Halfling
23%inclusion8 decks35 decks
11%synergy
Tatyova, Benthic Druid
20%inclusion7 decks35 decks
-11%synergy
Octomancer
20%inclusion7 decks35 decks
15%synergy
Hullbreaker Horror
20%inclusion7 decks35 decks
2%synergy
Esix, Fractal Bloom
17%inclusion6 decks35 decks
13%synergy
Enduring Curiosity
17%inclusion6 decks35 decks
14%synergy
Slinn Voda, the Rising Deep
17%inclusion6 decks35 decks
11%synergy
Saryth, the Viper's Fang
14%inclusion5 decks35 decks
13%synergy
Uro, Titan of Nature's Wrath
14%inclusion5 decks35 decks
5%synergy
Reclamation Sage
11%inclusion4 decks35 decks
-3%synergy
Endurance
11%inclusion4 decks35 decks
7%synergy
Skyserpent Seeker
11%inclusion4 decks35 decks
9%synergy
Wood Elves
11%inclusion4 decks35 decks
5%synergy
Auton Soldier
11%inclusion4 decks35 decks
9%synergy
Circle of Dreams Druid
11%inclusion4 decks35 decks
9%synergy
Coiling Oracle
11%inclusion4 decks35 decks
-2%synergy
Kinnan, Bonder Prodigy
11%inclusion4 decks35 decks
8%synergy
Glasspool Mimic
11%inclusion4 decks35 decks
7%synergy
Nezahal, Primal Tide
11%inclusion4 decks35 decks
0%synergy
Scourge of Fleets
8.6%inclusion3 decks35 decks
1%synergy
Torrential Gearhulk
8.6%inclusion3 decks35 decks
8%synergy
Scute Swarm
8.6%inclusion3 decks35 decks
-12%synergy
Champion of Lambholt
8.6%inclusion3 decks35 decks
3%synergy
Stormtide Leviathan
8.6%inclusion3 decks35 decks
3%synergy
Azusa, Lost but Seeking
8.6%inclusion3 decks35 decks
-6%synergy
Progenitor Mimic
8.6%inclusion3 decks35 decks
4%synergy
Tireless Provisioner
8.6%inclusion3 decks35 decks
-7%synergy
Overlord of the Hauntwoods
8.6%inclusion3 decks35 decks
6%synergy
Toski, Bearer of Secrets
8.6%inclusion3 decks35 decks
5%synergy
Naga Fleshcrafter
6.5%inclusion2 decks31 decks
5%synergy
Instants
Swan Song
54%inclusion19 decks35 decks
35%synergy
Pongify
40%inclusion14 decks35 decks
15%synergy
Growth Spiral
37%inclusion13 decks35 decks
-7%synergy
An Offer You Can't Refuse
37%inclusion13 decks35 decks
14%synergy
Double Major
37%inclusion13 decks35 decks
29%synergy
Negate
34%inclusion12 decks35 decks
8%synergy
Rapid Hybridization
34%inclusion12 decks35 decks
8%synergy
Second Harvest
34%inclusion12 decks35 decks
28%synergy
Arcane Denial
31%inclusion11 decks35 decks
9%synergy
Sink into Stupor
31%inclusion11 decks35 decks
20%synergy
Krosan Grip
29%inclusion10 decks35 decks
21%synergy
Chord of Calling
26%inclusion9 decks35 decks
18%synergy
Return of the Wildspeaker
23%inclusion8 decks35 decks
12%synergy
Force of Negation
23%inclusion8 decks35 decks
14%synergy
Reality Shift
20%inclusion7 decks35 decks
5%synergy
Plasm Capture
20%inclusion7 decks35 decks
16%synergy
Stubborn Denial
20%inclusion7 decks35 decks
17%synergy
Force of Vigor
17%inclusion6 decks35 decks
12%synergy
Nature's Claim
17%inclusion6 decks35 decks
7%synergy
Noxious Revival
17%inclusion6 decks35 decks
11%synergy
Pact of Negation
17%inclusion6 decks35 decks
10%synergy
Archdruid's Charm
17%inclusion6 decks35 decks
11%synergy
Voidslime
14%inclusion5 decks35 decks
9%synergy
Auroral Procession
13%inclusion4 decks31 decks
9%synergy
Brainstorm
11%inclusion4 decks35 decks
-3%synergy
Tamiyo's Safekeeping
11%inclusion4 decks35 decks
6%synergy
Resculpt
11%inclusion4 decks35 decks
5%synergy
Planar Genesis
11%inclusion4 decks35 decks
1%synergy
Consult the Star Charts
10%inclusion2 decks21 decks
8%synergy
Mizzium Skin
8.6%inclusion3 decks35 decks
8%synergy
Mental Misstep
8.6%inclusion3 decks35 decks
3%synergy
Mindbreak Trap
8.6%inclusion3 decks35 decks
4%synergy
Harrow
8.6%inclusion3 decks35 decks
-3%synergy
Flusterstorm
8.6%inclusion3 decks35 decks
2%synergy
Eureka Moment
8.6%inclusion3 decks35 decks
-2%synergy
Tyvar's Stand
8.6%inclusion3 decks35 decks
6%synergy
Simic Charm
8.6%inclusion3 decks35 decks
1%synergy
Snakeskin Veil
8.6%inclusion3 decks35 decks
3%synergy
Sublime Epiphany
5.7%inclusion2 decks35 decks
4%synergy
Ranger's Guile
5.7%inclusion2 decks35 decks
5%synergy
Entish Restoration
5.7%inclusion2 decks35 decks
-4%synergy
Capsize
5.7%inclusion2 decks35 decks
5%synergy
Return to Nature
5.7%inclusion2 decks35 decks
0%synergy
Pull from Tomorrow
5.7%inclusion2 decks35 decks
3%synergy
Lazotep Plating
5.7%inclusion2 decks35 decks
5%synergy
Rewind
5.7%inclusion2 decks35 decks
3%synergy
Misdirection
5.7%inclusion2 decks35 decks
4%synergy
Three Steps Ahead
5.7%inclusion2 decks35 decks
3%synergy
Wrap in Vigor
5.7%inclusion2 decks35 decks
5%synergy
Legolas's Quick Reflexes
5.7%inclusion2 decks35 decks
3%synergy
Sorceries
Kodama's Reach
54%inclusion19 decks35 decks
18%synergy
Skyshroud Claim
54%inclusion19 decks35 decks
45%synergy
Quantum Misalignment
43%inclusion15 decks35 decks
40%synergy
Sea Gate Restoration
34%inclusion12 decks35 decks
29%synergy
Overwhelming Stampede
29%inclusion10 decks35 decks
16%synergy
Finale of Devastation
26%inclusion9 decks35 decks
14%synergy
Bala Ged Recovery
23%inclusion8 decks35 decks
13%synergy
Migration Path
23%inclusion8 decks35 decks
19%synergy
Into the North
23%inclusion8 decks35 decks
22%synergy
Turntimber Symbiosis
17%inclusion6 decks35 decks
15%synergy
Shamanic Revelation
17%inclusion6 decks35 decks
12%synergy
Green Sun's Zenith
14%inclusion5 decks35 decks
6%synergy
Vastwood Surge
14%inclusion5 decks35 decks
13%synergy
Triumph of the Hordes
14%inclusion5 decks35 decks
11%synergy
Rite of Replication
14%inclusion5 decks35 decks
7%synergy
Nature's Rhythm
13%inclusion4 decks31 decks
7%synergy
Rishkar's Expertise
11%inclusion4 decks35 decks
3%synergy
Distant Melody
11%inclusion4 decks35 decks
8%synergy
Hunting Wilds
11%inclusion4 decks35 decks
11%synergy
Windfall
11%inclusion4 decks35 decks
7%synergy
Ranger's Path
11%inclusion4 decks35 decks
11%synergy
Expropriate
8.6%inclusion3 decks35 decks
7%synergy
Glimpse the Core
8.6%inclusion3 decks35 decks
8%synergy
Ponder
8.6%inclusion3 decks35 decks
1%synergy
Tempt with Discovery
8.6%inclusion3 decks35 decks
5%synergy
Bridgeworks Battle
8.6%inclusion3 decks35 decks
4%synergy
Regrowth
8.6%inclusion3 decks35 decks
5%synergy
Inundate
8.6%inclusion3 decks35 decks
8%synergy
Explore
8.6%inclusion3 decks35 decks
-12%synergy
Stock Up
5.7%inclusion2 decks35 decks
5%synergy
Parallel Evolution
5.7%inclusion2 decks35 decks
5%synergy
Preordain
5.7%inclusion2 decks35 decks
-3%synergy
Flare of Cultivation
5.7%inclusion2 decks35 decks
4%synergy
Overrun
5.7%inclusion2 decks35 decks
4%synergy
Curse of the Swine
5.7%inclusion2 decks35 decks
-5%synergy
Sylvan Tutor
5.7%inclusion2 decks35 decks
4%synergy
Explosive Vegetation
5.7%inclusion2 decks35 decks
0%synergy
Nissa's Pilgrimage
5.7%inclusion2 decks35 decks
4%synergy
Solve the Equation
5.7%inclusion2 decks35 decks
4%synergy
Raise the Palisade
5.7%inclusion2 decks35 decks
-1%synergy
Polymorph
5.7%inclusion2 decks35 decks
6%synergy
Replication Technique
5.7%inclusion2 decks35 decks
2%synergy
Natural Order
5.7%inclusion2 decks35 decks
4%synergy
Search for Tomorrow
5.7%inclusion2 decks35 decks
1%synergy
Utility Artifacts
Lightning Greaves
60%inclusion21 decks35 decks
38%synergy
Helm of the Host
49%inclusion17 decks35 decks
43%synergy
The Great Henge
43%inclusion15 decks35 decks
34%synergy
Swiftfoot Boots
37%inclusion13 decks35 decks
11%synergy
Combine Chrysalis
17%inclusion6 decks35 decks
13%synergy
Eldrazi Monument
17%inclusion6 decks35 decks
17%synergy
Mirror Box
17%inclusion6 decks35 decks
14%synergy
Coat of Arms
14%inclusion5 decks35 decks
13%synergy
Emerald Medallion
11%inclusion4 decks35 decks
8%synergy
Proteus Staff
8.6%inclusion3 decks35 decks
8%synergy
Banner of Kinship
5.7%inclusion2 decks35 decks
4%synergy
Skullclamp
5.7%inclusion2 decks35 decks
5%synergy
Champion's Helm
5.7%inclusion2 decks35 decks
5%synergy
Bident of Thassa
5.7%inclusion2 decks35 decks
-2%synergy
Enchantments
Tribute to the World Tree
60%inclusion21 decks35 decks
54%synergy
Kindred Discovery
46%inclusion16 decks35 decks
36%synergy
Mystic Remora
40%inclusion14 decks35 decks
25%synergy
Defense of the Heart
26%inclusion9 decks35 decks
23%synergy
Sylvan Library
23%inclusion8 decks35 decks
14%synergy
Paradox Haze
20%inclusion7 decks35 decks
20%synergy
Growing Rites of Itlimoc
20%inclusion7 decks35 decks
14%synergy
Utopia Sprawl
20%inclusion7 decks35 decks
13%synergy
Cryptolith Rite
20%inclusion7 decks35 decks
17%synergy
Garruk's Uprising
17%inclusion6 decks35 decks
1%synergy
Primal Vigor
14%inclusion5 decks35 decks
11%synergy
Exploration
14%inclusion5 decks35 decks
1%synergy
Extravagant Replication
14%inclusion5 decks35 decks
12%synergy
Wild Growth
14%inclusion5 decks35 decks
6%synergy
Beastmaster Ascension
11%inclusion4 decks35 decks
8%synergy
Dismiss into Dream
11%inclusion4 decks35 decks
11%synergy
Impostor Syndrome
11%inclusion2 decks18 decks
9%synergy
Moonlit Meditation
10%inclusion2 decks21 decks
8%synergy
Opposition
8.6%inclusion3 decks35 decks
8%synergy
Imprisoned in the Moon
5.7%inclusion2 decks35 decks
2%synergy
Wilderness Reclamation
5.7%inclusion2 decks35 decks
-3%synergy
One with the Multiverse
5.7%inclusion2 decks35 decks
3%synergy
Verity Circle
5.7%inclusion2 decks35 decks
5%synergy
Innkeeper's Talent
5.7%inclusion2 decks35 decks
1%synergy
Amphibian Downpour
5.7%inclusion2 decks35 decks
1%synergy
Storm of Saruman
5.7%inclusion2 decks35 decks
5%synergy
Back from the Brink
5.7%inclusion2 decks35 decks
6%synergy
Unnatural Growth
5.7%inclusion2 decks35 decks
2%synergy
Propaganda
5.7%inclusion2 decks35 decks
-1%synergy
The Clone Saga
5.3%inclusion1 decks19 decks
5%synergy
Battles
Invasion of Ikoria
11%inclusion4 decks35 decks
7%synergy
Invasion of Zendikar
8.6%inclusion3 decks35 decks
7%synergy
Planeswalkers
Oko, Thief of Crowns
43%inclusion15 decks35 decks
36%synergy
Wrenn and Realmbreaker
5.7%inclusion2 decks35 decks
5%synergy
Nissa, Who Shakes the World
5.7%inclusion2 decks35 decks
2%synergy
Nissa, Ascended Animist
5.7%inclusion2 decks35 decks
5%synergy
Utility Lands
Boseiju, Who Endures
63%inclusion22 decks35 decks
41%synergy
Yavimaya, Cradle of Growth
54%inclusion19 decks35 decks
32%synergy
Otawara, Soaring City
51%inclusion18 decks35 decks
32%synergy
Reliquary Tower
43%inclusion15 decks35 decks
-7%synergy
Mistrise Village
39%inclusion12 decks31 decks
28%synergy
Three Tree City
34%inclusion12 decks35 decks
29%synergy
Command Beacon
26%inclusion9 decks35 decks
22%synergy
Alchemist's Refuge
23%inclusion8 decks35 decks
5%synergy
Mystic Sanctuary
23%inclusion8 decks35 decks
10%synergy
Evendo, Waking Haven
19%inclusion4 decks21 decks
14%synergy
Urza's Saga
11%inclusion4 decks35 decks
6%synergy
Temple of the False God
11%inclusion4 decks35 decks
-4%synergy
Castle Garenbrig
11%inclusion4 decks35 decks
7%synergy
Dryad Arbor
11%inclusion4 decks35 decks
6%synergy
Strip Mine
8.6%inclusion3 decks35 decks
6%synergy
Wasteland
5.7%inclusion2 decks35 decks
4%synergy
Minamo, School at Water's Edge
5.7%inclusion2 decks35 decks
-1%synergy
Oboro, Palace in the Clouds
5.7%inclusion2 decks35 decks
3%synergy
Yavimaya Hollow
5.7%inclusion2 decks35 decks
5%synergy
Shifting Woodland
5.7%inclusion2 decks35 decks
-1%synergy
Nykthos, Shrine to Nyx
5.7%inclusion2 decks35 decks
3%synergy
Homeward Path
5.7%inclusion2 decks35 decks
4%synergy
Rogue's Passage
5.7%inclusion2 decks35 decks
-16%synergy
Mana Artifacts
Sol Ring
100%inclusion35 decks35 decks
19%synergy
Arcane Signet
74%inclusion26 decks35 decks
11%synergy
Talisman of Curiosity
37%inclusion13 decks35 decks
16%synergy
Thought Vessel
34%inclusion12 decks35 decks
14%synergy
Simic Signet
29%inclusion10 decks35 decks
-3%synergy
Fellwar Stone
23%inclusion8 decks35 decks
13%synergy
Decanter of Endless Water
11%inclusion4 decks35 decks
6%synergy
Everflowing Chalice
8.6%inclusion3 decks35 decks
4%synergy
Commander's Sphere
8.6%inclusion3 decks35 decks
0%synergy
Lotus Petal
8.6%inclusion3 decks35 decks
2%synergy
Chromatic Lantern
8.6%inclusion3 decks35 decks
6%synergy
Patchwork Banner
5.7%inclusion2 decks35 decks
2%synergy
Thran Dynamo
5.7%inclusion2 decks35 decks
3%synergy
Lands
Breeding Pool
94%inclusion33 decks35 decks
49%synergy
Forest
89%inclusion31 decks35 decks
-7%synergy
Island
89%inclusion31 decks35 decks
-7%synergy
Command Tower
86%inclusion30 decks35 decks
0%synergy
Tropical Island
83%inclusion29 decks35 decks
69%synergy
Rejuvenating Springs
83%inclusion29 decks35 decks
39%synergy
Misty Rainforest
83%inclusion29 decks35 decks
52%synergy
Hedge Maze
69%inclusion24 decks35 decks
49%synergy
Hinterland Harbor
66%inclusion23 decks35 decks
6%synergy
Yavimaya Coast
51%inclusion18 decks35 decks
-1%synergy
Dreamroot Cascade
49%inclusion17 decks35 decks
7%synergy
Flooded Grove
46%inclusion16 decks35 decks
5%synergy
Scalding Tarn
40%inclusion14 decks35 decks
30%synergy
Willowrush Verge
40%inclusion14 decks35 decks
24%synergy
Verdant Catacombs
37%inclusion13 decks35 decks
28%synergy
Waterlogged Grove
37%inclusion13 decks35 decks
17%synergy
Flooded Strand
37%inclusion13 decks35 decks
26%synergy
Barkchannel Pathway
37%inclusion13 decks35 decks
17%synergy
Sea Gate Restoration
34%inclusion12 decks35 decks
29%synergy
Snow-Covered Island
34%inclusion12 decks35 decks
27%synergy
Windswept Heath
34%inclusion12 decks35 decks
24%synergy
Wooded Foothills
34%inclusion12 decks35 decks
25%synergy
Simic Growth Chamber
31%inclusion11 decks35 decks
-17%synergy
Snow-Covered Forest
31%inclusion11 decks35 decks
25%synergy
Sink into Stupor
31%inclusion11 decks35 decks
20%synergy
Polluted Delta
31%inclusion11 decks35 decks
21%synergy
Rimewood Falls
29%inclusion10 decks35 decks
19%synergy
Prismatic Vista
26%inclusion9 decks35 decks
18%synergy
Temple of Mystery
23%inclusion8 decks35 decks
-16%synergy
Bala Ged Recovery
23%inclusion8 decks35 decks
13%synergy
Tangled Islet
20%inclusion7 decks35 decks
4%synergy
Fabled Passage
20%inclusion7 decks35 decks
6%synergy
Turntimber Symbiosis
17%inclusion6 decks35 decks
15%synergy
Mana Confluence
17%inclusion6 decks35 decks
11%synergy
Vineglimmer Snarl
17%inclusion6 decks35 decks
-21%synergy
Thornwood Falls
14%inclusion5 decks35 decks
-3%synergy
City of Brass
14%inclusion5 decks35 decks
8%synergy
Myriad Landscape
11%inclusion4 decks35 decks
-11%synergy
Exotic Orchard
11%inclusion4 decks35 decks
-12%synergy
Overflowing Basin
11%inclusion4 decks35 decks
-8%synergy
Evolving Wilds
11%inclusion4 decks35 decks
-14%synergy
Botanical Sanctum
11%inclusion4 decks35 decks
-1%synergy
Glasspool Mimic
11%inclusion4 decks35 decks
7%synergy
Path of Ancestry
8.6%inclusion3 decks35 decks
-9%synergy
Reflecting Pool
8.6%inclusion3 decks35 decks
5%synergy
Bridgeworks Battle
8.6%inclusion3 decks35 decks
4%synergy
Gemstone Caverns
8.6%inclusion3 decks35 decks
3%synergy
Disciple of Freyalise
5.7%inclusion2 decks35 decks
1%synergy
Hydroelectric Specimen
5.7%inclusion2 decks35 decks
0%synergy
Terramorphic Expanse
5.7%inclusion2 decks35 decks
-14%synergy