Koma, Cosmos Serpent (Commander) - Expensive Upgraded

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #295
34decks
As CommanderAs CardAverage DeckDecks
Bracket
All12345
Budget
Any$$$$
Background image for How To Play Sea Creatures Differently In Commander
Sikora
Nov 13, 2025
Sikora
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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Utility Lands
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Lands
Back to Top
Shared Roots
18%inclusion2 decks11 decks
16%synergy
The Unagi of Kyoshi Island
9.1%inclusion1 decks11 decks
5%synergy
Ember Island Production
9.1%inclusion1 decks11 decks
9%synergy
Mutable Explorer
5.9%inclusion1 decks17 decks
6%synergy
High Synergy Cards
Parallel Lives
85%inclusion29 decks34 decks
79%synergy
Sakashima of a Thousand Faces
79%inclusion27 decks34 decks
74%synergy
Adrix and Nev, Twincasters
82%inclusion28 decks34 decks
74%synergy
Sakashima the Impostor
74%inclusion25 decks34 decks
71%synergy
Elemental Bond
76%inclusion26 decks34 decks
71%synergy
Spark Double
79%inclusion27 decks34 decks
70%synergy
Mana Drain
79%inclusion27 decks34 decks
64%synergy
Irenicus's Vile Duplication
68%inclusion23 decks34 decks
61%synergy
Serpent of Yawning Depths
65%inclusion22 decks34 decks
58%synergy
Doubling Season
68%inclusion23 decks34 decks
58%synergy
Top Cards
Nature's Lore
82%inclusion28 decks34 decks
52%synergy
Farseek
79%inclusion27 decks34 decks
55%synergy
Three Visits
74%inclusion25 decks34 decks
50%synergy
Heroic Intervention
74%inclusion25 decks34 decks
43%synergy
Whelming Wave
68%inclusion23 decks34 decks
56%synergy
Beast Within
68%inclusion23 decks34 decks
17%synergy
Rampant Growth
65%inclusion22 decks34 decks
24%synergy
Cultivate
62%inclusion21 decks34 decks
15%synergy
Tribute to the World Tree
62%inclusion21 decks34 decks
55%synergy
Counterspell
62%inclusion21 decks34 decks
12%synergy
Game Changers
Cyclonic Rift
56%inclusion19 decks34 decks
30%synergy
Gaea's Cradle
50%inclusion17 decks34 decks
43%synergy
Rhystic Study
41%inclusion14 decks34 decks
19%synergy
Fierce Guardianship
38%inclusion13 decks34 decks
21%synergy
Consecrated Sphinx
32%inclusion11 decks34 decks
24%synergy
Ancient Tomb
18%inclusion6 decks34 decks
8%synergy
Seedborn Muse
18%inclusion6 decks34 decks
2%synergy
Worldly Tutor
15%inclusion5 decks34 decks
-1%synergy
The One Ring
8.8%inclusion3 decks34 decks
1%synergy
Force of Will
5.9%inclusion2 decks34 decks
-4%synergy
Creatures
Birds of Paradise
62%inclusion21 decks34 decks
34%synergy
Koma, World-Eater
59%inclusion20 decks34 decks
46%synergy
Craterhoof Behemoth
56%inclusion19 decks34 decks
46%synergy
Llanowar Elves
53%inclusion18 decks34 decks
25%synergy
Spawning Kraken
50%inclusion17 decks34 decks
43%synergy
Aesi, Tyrant of Gyre Strait
50%inclusion17 decks34 decks
33%synergy
Junk Winder
47%inclusion16 decks34 decks
40%synergy
Elvish Mystic
44%inclusion15 decks34 decks
20%synergy
Roaming Throne
41%inclusion14 decks34 decks
33%synergy
Arixmethes, Slumbering Isle
41%inclusion14 decks34 decks
28%synergy
Ohran Frostfang
38%inclusion13 decks34 decks
35%synergy
Chameleon, Master of Disguise
35%inclusion6 decks17 decks
33%synergy
Fanatic of Rhonas
29%inclusion10 decks34 decks
24%synergy
Fyndhorn Elves
29%inclusion10 decks34 decks
14%synergy
Summon: Leviathan
29%inclusion7 decks24 decks
22%synergy
Archetype of Imagination
26%inclusion9 decks34 decks
22%synergy
Sakura-Tribe Elder
26%inclusion9 decks34 decks
7%synergy
Garruk's Packleader
26%inclusion9 decks34 decks
24%synergy
Eternal Witness
26%inclusion9 decks34 decks
5%synergy
Enduring Vitality
26%inclusion9 decks34 decks
19%synergy
Murkfiend Liege
26%inclusion9 decks34 decks
12%synergy
Tatyova, Benthic Druid
24%inclusion8 decks34 decks
-8%synergy
Delighted Halfling
21%inclusion7 decks34 decks
9%synergy
Hullbreaker Horror
21%inclusion7 decks34 decks
3%synergy
Octomancer
21%inclusion7 decks34 decks
16%synergy
Esix, Fractal Bloom
18%inclusion6 decks34 decks
14%synergy
Enduring Curiosity
18%inclusion6 decks34 decks
14%synergy
Slinn Voda, the Rising Deep
18%inclusion6 decks34 decks
11%synergy
Saryth, the Viper's Fang
15%inclusion5 decks34 decks
13%synergy
Circle of Dreams Druid
12%inclusion4 decks34 decks
9%synergy
Skyserpent Seeker
12%inclusion4 decks34 decks
9%synergy
Wood Elves
12%inclusion4 decks34 decks
5%synergy
Auton Soldier
12%inclusion4 decks34 decks
9%synergy
Endurance
12%inclusion4 decks34 decks
7%synergy
Kinnan, Bonder Prodigy
12%inclusion4 decks34 decks
8%synergy
Glasspool Mimic
12%inclusion4 decks34 decks
7%synergy
Uro, Titan of Nature's Wrath
12%inclusion4 decks34 decks
2%synergy
Reclamation Sage
12%inclusion4 decks34 decks
-3%synergy
Overlord of the Hauntwoods
8.8%inclusion3 decks34 decks
6%synergy
Scourge of Fleets
8.8%inclusion3 decks34 decks
1%synergy
Coiling Oracle
8.8%inclusion3 decks34 decks
-5%synergy
Azusa, Lost but Seeking
8.8%inclusion3 decks34 decks
-5%synergy
Nezahal, Primal Tide
8.8%inclusion3 decks34 decks
-2%synergy
Progenitor Mimic
8.8%inclusion3 decks34 decks
4%synergy
Toski, Bearer of Secrets
8.8%inclusion3 decks34 decks
5%synergy
Scute Swarm
8.8%inclusion3 decks34 decks
-12%synergy
Tireless Provisioner
8.8%inclusion3 decks34 decks
-6%synergy
Champion of Lambholt
8.8%inclusion3 decks34 decks
4%synergy
Stormtide Leviathan
8.8%inclusion3 decks34 decks
3%synergy
Naga Fleshcrafter
6.7%inclusion2 decks30 decks
5%synergy
Instants
Swan Song
56%inclusion19 decks34 decks
37%synergy
Pongify
41%inclusion14 decks34 decks
16%synergy
An Offer You Can't Refuse
38%inclusion13 decks34 decks
15%synergy
Growth Spiral
35%inclusion12 decks34 decks
-9%synergy
Rapid Hybridization
35%inclusion12 decks34 decks
9%synergy
Negate
35%inclusion12 decks34 decks
9%synergy
Second Harvest
35%inclusion12 decks34 decks
29%synergy
Double Major
35%inclusion12 decks34 decks
27%synergy
Arcane Denial
32%inclusion11 decks34 decks
10%synergy
Sink into Stupor
29%inclusion10 decks34 decks
18%synergy
Krosan Grip
29%inclusion10 decks34 decks
21%synergy
Return of the Wildspeaker
24%inclusion8 decks34 decks
13%synergy
Force of Negation
24%inclusion8 decks34 decks
15%synergy
Chord of Calling
24%inclusion8 decks34 decks
16%synergy
Stubborn Denial
21%inclusion7 decks34 decks
18%synergy
Reality Shift
21%inclusion7 decks34 decks
6%synergy
Nature's Claim
18%inclusion6 decks34 decks
8%synergy
Noxious Revival
18%inclusion6 decks34 decks
12%synergy
Pact of Negation
18%inclusion6 decks34 decks
10%synergy
Plasm Capture
18%inclusion6 decks34 decks
14%synergy
Archdruid's Charm
18%inclusion6 decks34 decks
11%synergy
Force of Vigor
18%inclusion6 decks34 decks
13%synergy
Voidslime
15%inclusion5 decks34 decks
10%synergy
Brainstorm
12%inclusion4 decks34 decks
-3%synergy
Tamiyo's Safekeeping
12%inclusion4 decks34 decks
6%synergy
Resculpt
12%inclusion4 decks34 decks
6%synergy
Auroral Procession
10%inclusion3 decks30 decks
6%synergy
Snakeskin Veil
8.8%inclusion3 decks34 decks
3%synergy
Mindbreak Trap
8.8%inclusion3 decks34 decks
4%synergy
Flusterstorm
8.8%inclusion3 decks34 decks
2%synergy
Planar Genesis
8.8%inclusion3 decks34 decks
-2%synergy
Mental Misstep
8.8%inclusion3 decks34 decks
3%synergy
Simic Charm
8.8%inclusion3 decks34 decks
1%synergy
Mizzium Skin
8.8%inclusion3 decks34 decks
8%synergy
Tyvar's Stand
8.8%inclusion3 decks34 decks
6%synergy
Harrow
5.9%inclusion2 decks34 decks
-6%synergy
Delay
5.9%inclusion2 decks34 decks
3%synergy
Rewind
5.9%inclusion2 decks34 decks
3%synergy
March of Swirling Mist
5.9%inclusion2 decks34 decks
2%synergy
Muddle the Mixture
5.9%inclusion2 decks34 decks
1%synergy
Eureka Moment
5.9%inclusion2 decks34 decks
-5%synergy
Three Steps Ahead
5.9%inclusion2 decks34 decks
3%synergy
Legolas's Quick Reflexes
5.9%inclusion2 decks34 decks
3%synergy
Capsize
5.9%inclusion2 decks34 decks
5%synergy
Return to Nature
5.9%inclusion2 decks34 decks
0%synergy
Slip Out the Back
5.9%inclusion2 decks34 decks
2%synergy
Disallow
5.9%inclusion2 decks34 decks
4%synergy
Misdirection
5.9%inclusion2 decks34 decks
4%synergy
Obscuring Haze
5.9%inclusion2 decks34 decks
4%synergy
Veil of Summer
5.9%inclusion2 decks34 decks
0%synergy
Sorceries
Kodama's Reach
56%inclusion19 decks34 decks
19%synergy
Skyshroud Claim
56%inclusion19 decks34 decks
47%synergy
Quantum Misalignment
44%inclusion15 decks34 decks
41%synergy
Sea Gate Restoration
32%inclusion11 decks34 decks
27%synergy
Overwhelming Stampede
29%inclusion10 decks34 decks
17%synergy
Finale of Devastation
26%inclusion9 decks34 decks
15%synergy
Migration Path
24%inclusion8 decks34 decks
20%synergy
Into the North
21%inclusion7 decks34 decks
19%synergy
Bala Ged Recovery
21%inclusion7 decks34 decks
11%synergy
Shamanic Revelation
18%inclusion6 decks34 decks
12%synergy
Turntimber Symbiosis
18%inclusion6 decks34 decks
15%synergy
Green Sun's Zenith
15%inclusion5 decks34 decks
6%synergy
Triumph of the Hordes
15%inclusion5 decks34 decks
12%synergy
Rite of Replication
15%inclusion5 decks34 decks
7%synergy
Vastwood Surge
15%inclusion5 decks34 decks
14%synergy
Nature's Rhythm
13%inclusion4 decks30 decks
8%synergy
Ranger's Path
12%inclusion4 decks34 decks
11%synergy
Distant Melody
12%inclusion4 decks34 decks
8%synergy
Windfall
12%inclusion4 decks34 decks
8%synergy
Hunting Wilds
12%inclusion4 decks34 decks
11%synergy
Rishkar's Expertise
12%inclusion4 decks34 decks
3%synergy
Bridgeworks Battle
8.8%inclusion3 decks34 decks
4%synergy
Inundate
8.8%inclusion3 decks34 decks
9%synergy
Tempt with Discovery
8.8%inclusion3 decks34 decks
5%synergy
Expropriate
8.8%inclusion3 decks34 decks
7%synergy
Explore
8.8%inclusion3 decks34 decks
-12%synergy
Glimpse the Core
8.8%inclusion3 decks34 decks
8%synergy
Search for Tomorrow
5.9%inclusion2 decks34 decks
1%synergy
Raise the Palisade
5.9%inclusion2 decks34 decks
-1%synergy
Ponder
5.9%inclusion2 decks34 decks
-1%synergy
Polymorph
5.9%inclusion2 decks34 decks
6%synergy
Replication Technique
5.9%inclusion2 decks34 decks
3%synergy
Stock Up
5.9%inclusion2 decks34 decks
5%synergy
Curse of the Swine
5.9%inclusion2 decks34 decks
-5%synergy
Natural Order
5.9%inclusion2 decks34 decks
5%synergy
Sylvan Tutor
5.9%inclusion2 decks34 decks
4%synergy
Parallel Evolution
5.9%inclusion2 decks34 decks
5%synergy
Nissa's Pilgrimage
5.9%inclusion2 decks34 decks
4%synergy
Overrun
5.9%inclusion2 decks34 decks
4%synergy
Explosive Vegetation
5.9%inclusion2 decks34 decks
0%synergy
Preordain
5.9%inclusion2 decks34 decks
-2%synergy
Regrowth
5.9%inclusion2 decks34 decks
2%synergy
Utility Artifacts
Lightning Greaves
62%inclusion21 decks34 decks
40%synergy
Helm of the Host
50%inclusion17 decks34 decks
45%synergy
The Great Henge
44%inclusion15 decks34 decks
35%synergy
Swiftfoot Boots
38%inclusion13 decks34 decks
12%synergy
Mirror Box
18%inclusion6 decks34 decks
14%synergy
Eldrazi Monument
18%inclusion6 decks34 decks
17%synergy
Combine Chrysalis
18%inclusion6 decks34 decks
13%synergy
Coat of Arms
15%inclusion5 decks34 decks
13%synergy
Emerald Medallion
12%inclusion4 decks34 decks
9%synergy
Proteus Staff
8.8%inclusion3 decks34 decks
9%synergy
Champion's Helm
5.9%inclusion2 decks34 decks
5%synergy
Skullclamp
5.9%inclusion2 decks34 decks
5%synergy
Banner of Kinship
5.9%inclusion2 decks34 decks
4%synergy
Bident of Thassa
5.9%inclusion2 decks34 decks
-1%synergy
Enchantments
Kindred Discovery
47%inclusion16 decks34 decks
37%synergy
Mystic Remora
41%inclusion14 decks34 decks
26%synergy
Defense of the Heart
26%inclusion9 decks34 decks
24%synergy
Sylvan Library
24%inclusion8 decks34 decks
14%synergy
Paradox Haze
21%inclusion7 decks34 decks
20%synergy
Cryptolith Rite
21%inclusion7 decks34 decks
17%synergy
Growing Rites of Itlimoc
21%inclusion7 decks34 decks
15%synergy
Garruk's Uprising
18%inclusion6 decks34 decks
1%synergy
Utopia Sprawl
18%inclusion6 decks34 decks
11%synergy
Exploration
15%inclusion5 decks34 decks
1%synergy
Extravagant Replication
15%inclusion5 decks34 decks
12%synergy
Wild Growth
15%inclusion5 decks34 decks
6%synergy
Primal Vigor
15%inclusion5 decks34 decks
12%synergy
Impostor Syndrome
12%inclusion2 decks17 decks
10%synergy
Beastmaster Ascension
12%inclusion4 decks34 decks
9%synergy
Dismiss into Dream
12%inclusion4 decks34 decks
11%synergy
Moonlit Meditation
10%inclusion2 decks20 decks
9%synergy
Opposition
8.8%inclusion3 decks34 decks
8%synergy
Unnatural Growth
5.9%inclusion2 decks34 decks
3%synergy
Amphibian Downpour
5.9%inclusion2 decks34 decks
1%synergy
Propaganda
5.9%inclusion2 decks34 decks
-1%synergy
Verity Circle
5.9%inclusion2 decks34 decks
5%synergy
Imprisoned in the Moon
5.9%inclusion2 decks34 decks
2%synergy
Back from the Brink
5.9%inclusion2 decks34 decks
6%synergy
Innkeeper's Talent
5.9%inclusion2 decks34 decks
1%synergy
Storm of Saruman
5.9%inclusion2 decks34 decks
5%synergy
The Clone Saga
5.6%inclusion1 decks18 decks
5%synergy
Battles
Invasion of Ikoria
12%inclusion4 decks34 decks
7%synergy
Invasion of Zendikar
8.8%inclusion3 decks34 decks
7%synergy
Planeswalkers
Oko, Thief of Crowns
44%inclusion15 decks34 decks
37%synergy
Wrenn and Realmbreaker
5.9%inclusion2 decks34 decks
5%synergy
Nissa, Ascended Animist
5.9%inclusion2 decks34 decks
5%synergy
Utility Lands
Boseiju, Who Endures
62%inclusion21 decks34 decks
40%synergy
Yavimaya, Cradle of Growth
53%inclusion18 decks34 decks
31%synergy
Otawara, Soaring City
53%inclusion18 decks34 decks
34%synergy
Reliquary Tower
44%inclusion15 decks34 decks
-6%synergy
Mistrise Village
37%inclusion11 decks30 decks
26%synergy
Three Tree City
35%inclusion12 decks34 decks
30%synergy
Command Beacon
26%inclusion9 decks34 decks
22%synergy
Alchemist's Refuge
24%inclusion8 decks34 decks
6%synergy
Mystic Sanctuary
21%inclusion7 decks34 decks
8%synergy
Evendo, Waking Haven
20%inclusion4 decks20 decks
15%synergy
Temple of the False God
12%inclusion4 decks34 decks
-4%synergy
Dryad Arbor
12%inclusion4 decks34 decks
6%synergy
Urza's Saga
12%inclusion4 decks34 decks
6%synergy
Strip Mine
8.8%inclusion3 decks34 decks
6%synergy
Castle Garenbrig
8.8%inclusion3 decks34 decks
4%synergy
Wasteland
5.9%inclusion2 decks34 decks
5%synergy
Yavimaya Hollow
5.9%inclusion2 decks34 decks
5%synergy
Shifting Woodland
5.9%inclusion2 decks34 decks
-1%synergy
Homeward Path
5.9%inclusion2 decks34 decks
4%synergy
Oboro, Palace in the Clouds
5.9%inclusion2 decks34 decks
3%synergy
Rogue's Passage
5.9%inclusion2 decks34 decks
-16%synergy
Minamo, School at Water's Edge
5.9%inclusion2 decks34 decks
-1%synergy
Nykthos, Shrine to Nyx
5.9%inclusion2 decks34 decks
3%synergy
Mana Artifacts
Sol Ring
100%inclusion34 decks34 decks
19%synergy
Arcane Signet
74%inclusion25 decks34 decks
11%synergy
Talisman of Curiosity
35%inclusion12 decks34 decks
14%synergy
Thought Vessel
35%inclusion12 decks34 decks
15%synergy
Simic Signet
26%inclusion9 decks34 decks
-6%synergy
Fellwar Stone
24%inclusion8 decks34 decks
14%synergy
Decanter of Endless Water
12%inclusion4 decks34 decks
7%synergy
Chromatic Lantern
8.8%inclusion3 decks34 decks
7%synergy
Everflowing Chalice
8.8%inclusion3 decks34 decks
5%synergy
Commander's Sphere
8.8%inclusion3 decks34 decks
0%synergy
Lotus Petal
8.8%inclusion3 decks34 decks
2%synergy
Patchwork Banner
5.9%inclusion2 decks34 decks
2%synergy
Thran Dynamo
5.9%inclusion2 decks34 decks
3%synergy
Lands
Breeding Pool
94%inclusion32 decks34 decks
49%synergy
Forest
88%inclusion30 decks34 decks
-7%synergy
Island
88%inclusion30 decks34 decks
-7%synergy
Command Tower
85%inclusion29 decks34 decks
0%synergy
Tropical Island
82%inclusion28 decks34 decks
68%synergy
Rejuvenating Springs
82%inclusion28 decks34 decks
38%synergy
Misty Rainforest
82%inclusion28 decks34 decks
51%synergy
Hedge Maze
68%inclusion23 decks34 decks
48%synergy
Hinterland Harbor
68%inclusion23 decks34 decks
8%synergy
Yavimaya Coast
53%inclusion18 decks34 decks
1%synergy
Flooded Grove
47%inclusion16 decks34 decks
6%synergy
Dreamroot Cascade
47%inclusion16 decks34 decks
5%synergy
Scalding Tarn
41%inclusion14 decks34 decks
31%synergy
Waterlogged Grove
38%inclusion13 decks34 decks
18%synergy
Verdant Catacombs
38%inclusion13 decks34 decks
29%synergy
Willowrush Verge
38%inclusion13 decks34 decks
22%synergy
Flooded Strand
38%inclusion13 decks34 decks
27%synergy
Barkchannel Pathway
35%inclusion12 decks34 decks
15%synergy
Snow-Covered Island
35%inclusion12 decks34 decks
28%synergy
Wooded Foothills
35%inclusion12 decks34 decks
26%synergy
Windswept Heath
35%inclusion12 decks34 decks
25%synergy
Simic Growth Chamber
32%inclusion11 decks34 decks
-16%synergy
Snow-Covered Forest
32%inclusion11 decks34 decks
26%synergy
Sea Gate Restoration
32%inclusion11 decks34 decks
27%synergy
Polluted Delta
32%inclusion11 decks34 decks
22%synergy
Rimewood Falls
29%inclusion10 decks34 decks
20%synergy
Sink into Stupor
29%inclusion10 decks34 decks
18%synergy
Prismatic Vista
24%inclusion8 decks34 decks
16%synergy
Temple of Mystery
24%inclusion8 decks34 decks
-15%synergy
Fabled Passage
21%inclusion7 decks34 decks
6%synergy
Tangled Islet
21%inclusion7 decks34 decks
4%synergy
Bala Ged Recovery
21%inclusion7 decks34 decks
11%synergy
Vineglimmer Snarl
18%inclusion6 decks34 decks
-21%synergy
Turntimber Symbiosis
18%inclusion6 decks34 decks
15%synergy
Mana Confluence
18%inclusion6 decks34 decks
12%synergy
Thornwood Falls
15%inclusion5 decks34 decks
-3%synergy
City of Brass
15%inclusion5 decks34 decks
9%synergy
Exotic Orchard
12%inclusion4 decks34 decks
-12%synergy
Myriad Landscape
12%inclusion4 decks34 decks
-10%synergy
Overflowing Basin
12%inclusion4 decks34 decks
-8%synergy
Botanical Sanctum
12%inclusion4 decks34 decks
-1%synergy
Glasspool Mimic
12%inclusion4 decks34 decks
7%synergy
Evolving Wilds
12%inclusion4 decks34 decks
-13%synergy
Reflecting Pool
8.8%inclusion3 decks34 decks
6%synergy
Bridgeworks Battle
8.8%inclusion3 decks34 decks
4%synergy
Path of Ancestry
8.8%inclusion3 decks34 decks
-8%synergy
Terramorphic Expanse
5.9%inclusion2 decks34 decks
-14%synergy
Tangled Florahedron
5.9%inclusion2 decks34 decks
4%synergy
Hydroelectric Specimen
5.9%inclusion2 decks34 decks
0%synergy
Gemstone Caverns
5.9%inclusion2 decks34 decks
0%synergy
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