Koma, Cosmos Serpent (Commander) - Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #301
159decks
As CommanderAs CardAverage DeckDecks
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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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The Unagi of Kyoshi Island
14%inclusion5 decks36 decks
9%synergy
Badgermole Cub
8.1%inclusion3 decks37 decks
3%synergy
Agna Qel'a
6.1%inclusion2 decks33 decks
5%synergy
Shared Roots
5.9%inclusion2 decks34 decks
3%synergy
Wan Shi Tong, Librarian
5.4%inclusion2 decks37 decks
0%synergy
High Synergy Cards
Elemental Bond
80%inclusion127 decks159 decks
74%synergy
Adrix and Nev, Twincasters
79%inclusion126 decks159 decks
71%synergy
Whelming Wave
77%inclusion122 decks159 decks
65%synergy
Spark Double
74%inclusion118 decks159 decks
65%synergy
Sakashima of a Thousand Faces
62%inclusion98 decks159 decks
57%synergy
Parallel Lives
62%inclusion98 decks159 decks
56%synergy
Serpent of Yawning Depths
53%inclusion85 decks159 decks
47%synergy
Junk Winder
52%inclusion83 decks159 decks
46%synergy
Irenicus's Vile Duplication
51%inclusion81 decks159 decks
45%synergy
Tribute to the World Tree
49%inclusion78 decks159 decks
43%synergy
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Cultivate
77%inclusion122 decks159 decks
30%synergy
Counterspell
72%inclusion114 decks159 decks
22%synergy
Nature's Lore
67%inclusion107 decks159 decks
37%synergy
Kodama's Reach
66%inclusion105 decks159 decks
30%synergy
Beast Within
63%inclusion100 decks159 decks
13%synergy
Three Visits
61%inclusion97 decks159 decks
38%synergy
Heroic Intervention
60%inclusion96 decks159 decks
30%synergy
Rampant Growth
60%inclusion96 decks159 decks
20%synergy
Koma, World-Eater
54%inclusion68 decks127 decks
40%synergy
Farseek
53%inclusion85 decks159 decks
29%synergy
Game Changers
Cyclonic Rift
64%inclusion101 decks159 decks
38%synergy
Rhystic Study
55%inclusion88 decks159 decks
34%synergy
Fierce Guardianship
50%inclusion80 decks159 decks
33%synergy
Seedborn Muse
35%inclusion55 decks159 decks
19%synergy
Consecrated Sphinx
31%inclusion49 decks159 decks
22%synergy
Force of Will
28%inclusion44 decks159 decks
18%synergy
Worldly Tutor
26%inclusion41 decks159 decks
10%synergy
Ancient Tomb
25%inclusion39 decks159 decks
15%synergy
Mystical Tutor
25%inclusion39 decks159 decks
15%synergy
Mana Vault
16%inclusion26 decks159 decks
10%synergy
Creatures
Birds of Paradise
53%inclusion85 decks159 decks
26%synergy
Aesi, Tyrant of Gyre Strait
50%inclusion80 decks159 decks
33%synergy
Sakashima the Impostor
43%inclusion68 decks159 decks
40%synergy
Spawning Kraken
43%inclusion68 decks159 decks
35%synergy
Llanowar Elves
40%inclusion64 decks159 decks
12%synergy
Elvish Mystic
40%inclusion63 decks159 decks
16%synergy
Sakura-Tribe Elder
37%inclusion59 decks159 decks
18%synergy
Eternal Witness
34%inclusion54 decks159 decks
13%synergy
Craterhoof Behemoth
34%inclusion54 decks159 decks
24%synergy
Hullbreaker Horror
33%inclusion52 decks159 decks
15%synergy
Fyndhorn Elves
33%inclusion52 decks159 decks
17%synergy
Tatyova, Benthic Druid
32%inclusion51 decks159 decks
1%synergy
Roaming Throne
32%inclusion51 decks159 decks
24%synergy
Arixmethes, Slumbering Isle
31%inclusion50 decks159 decks
18%synergy
Summon: Leviathan
29%inclusion25 decks87 decks
22%synergy
Garruk's Packleader
27%inclusion43 decks159 decks
25%synergy
Enduring Vitality
22%inclusion30 decks136 decks
15%synergy
Murkfiend Liege
21%inclusion34 decks159 decks
7%synergy
Delighted Halfling
21%inclusion34 decks159 decks
10%synergy
Ohran Frostfang
21%inclusion33 decks159 decks
17%synergy
Starwinder
20%inclusion14 decks69 decks
14%synergy
Octomancer
20%inclusion28 decks139 decks
15%synergy
Uro, Titan of Nature's Wrath
18%inclusion29 decks159 decks
8%synergy
Archetype of Imagination
18%inclusion28 decks159 decks
13%synergy
Enduring Curiosity
16%inclusion22 decks136 decks
13%synergy
Fanatic of Rhonas
14%inclusion20 decks140 decks
9%synergy
Toski, Bearer of Secrets
13%inclusion21 decks159 decks
10%synergy
Saryth, the Viper's Fang
13%inclusion20 decks159 decks
11%synergy
Slinn Voda, the Rising Deep
13%inclusion20 decks159 decks
6%synergy
Esix, Fractal Bloom
13%inclusion20 decks159 decks
9%synergy
Lotus Cobra
12%inclusion19 decks159 decks
-2%synergy
Glasspool Mimic
12%inclusion19 decks159 decks
8%synergy
Tireless Provisioner
11%inclusion18 decks159 decks
-4%synergy
Hydroelectric Specimen
11%inclusion15 decks140 decks
5%synergy
Chameleon, Master of Disguise
11%inclusion6 decks56 decks
8%synergy
Coiling Oracle
11%inclusion17 decks159 decks
-3%synergy
Azusa, Lost but Seeking
10%inclusion16 decks159 decks
-4%synergy
Nezahal, Primal Tide
10%inclusion16 decks159 decks
-1%synergy
Gala Greeters
10%inclusion16 decks159 decks
8%synergy
Curiosity Crafter
9.4%inclusion15 decks159 decks
6%synergy
Troyan, Gutsy Explorer
9.4%inclusion15 decks159 decks
6%synergy
Scourge of Fleets
9.4%inclusion15 decks159 decks
1%synergy
Stormtide Leviathan
8.2%inclusion13 decks159 decks
2%synergy
Sphinx of the Second Sun
8.2%inclusion13 decks159 decks
7%synergy
Kinnan, Bonder Prodigy
8.2%inclusion13 decks159 decks
5%synergy
Scute Swarm
8.2%inclusion13 decks159 decks
-13%synergy
Guardian Augmenter
8.2%inclusion13 decks159 decks
7%synergy
Disciple of Freyalise
7.9%inclusion11 decks140 decks
3%synergy
Reclamation Sage
7.5%inclusion12 decks159 decks
-7%synergy
Avenger of Zendikar
7.5%inclusion12 decks159 decks
-10%synergy
Instants
Mana Drain
53%inclusion84 decks159 decks
37%synergy
An Offer You Can't Refuse
52%inclusion83 decks159 decks
29%synergy
Arcane Denial
47%inclusion74 decks159 decks
24%synergy
Growth Spiral
45%inclusion71 decks159 decks
0%synergy
Swan Song
43%inclusion69 decks159 decks
24%synergy
Pongify
41%inclusion65 decks159 decks
16%synergy
Rapid Hybridization
40%inclusion64 decks159 decks
14%synergy
Negate
38%inclusion61 decks159 decks
12%synergy
Double Major
33%inclusion53 decks159 decks
25%synergy
Return of the Wildspeaker
27%inclusion43 decks159 decks
17%synergy
Second Harvest
27%inclusion43 decks159 decks
21%synergy
Reality Shift
26%inclusion41 decks159 decks
11%synergy
Force of Negation
26%inclusion41 decks159 decks
17%synergy
Nature's Claim
25%inclusion40 decks159 decks
15%synergy
Sink into Stupor
23%inclusion32 decks140 decks
11%synergy
Planar Genesis
22%inclusion31 decks140 decks
11%synergy
Pact of Negation
22%inclusion35 decks159 decks
15%synergy
Krosan Grip
21%inclusion33 decks159 decks
13%synergy
Chord of Calling
20%inclusion32 decks159 decks
12%synergy
Harrow
19%inclusion30 decks159 decks
7%synergy
Tamiyo's Safekeeping
18%inclusion29 decks159 decks
13%synergy
Brainstorm
17%inclusion27 decks159 decks
3%synergy
Resculpt
16%inclusion25 decks159 decks
10%synergy
Simic Charm
15%inclusion24 decks159 decks
7%synergy
Archdruid's Charm
15%inclusion23 decks157 decks
8%synergy
Stubborn Denial
13%inclusion21 decks159 decks
11%synergy
Voidslime
13%inclusion21 decks159 decks
8%synergy
Return to Nature
13%inclusion20 decks159 decks
7%synergy
Force of Vigor
12%inclusion19 decks159 decks
7%synergy
Plasm Capture
11%inclusion18 decks159 decks
8%synergy
Tyvar's Stand
11%inclusion18 decks159 decks
9%synergy
Disallow
11%inclusion18 decks159 decks
10%synergy
Crop Rotation
11%inclusion17 decks159 decks
-3%synergy
Mystic Reflection
11%inclusion17 decks159 decks
8%synergy
Eureka Moment
10%inclusion16 decks159 decks
-1%synergy
Snakeskin Veil
10%inclusion16 decks159 decks
4%synergy
Entish Restoration
10%inclusion16 decks159 decks
1%synergy
Joint Exploration
10%inclusion16 decks159 decks
4%synergy
Collective Resistance
10%inclusion14 decks140 decks
6%synergy
Aetherize
9.4%inclusion15 decks159 decks
-2%synergy
Noxious Revival
9.4%inclusion15 decks159 decks
3%synergy
Strix Serenade
9.3%inclusion13 decks140 decks
6%synergy
Three Steps Ahead
8.8%inclusion13 decks148 decks
6%synergy
Consult the Star Charts
8.5%inclusion6 decks71 decks
7%synergy
Frantic Search
8.2%inclusion13 decks159 decks
3%synergy
Slip Out the Back
8.2%inclusion13 decks159 decks
5%synergy
Narset's Reversal
8.2%inclusion13 decks159 decks
7%synergy
Mizzium Skin
7.5%inclusion12 decks159 decks
7%synergy
Wash Away
6.9%inclusion11 decks159 decks
5%synergy
Muddle the Mixture
6.3%inclusion10 decks159 decks
2%synergy
Sorceries
Skyshroud Claim
43%inclusion68 decks159 decks
34%synergy
Quantum Misalignment
26%inclusion42 decks159 decks
24%synergy
Triumph of the Hordes
23%inclusion37 decks159 decks
20%synergy
Bala Ged Recovery
23%inclusion36 decks159 decks
13%synergy
Explore
19%inclusion31 decks159 decks
-1%synergy
Finale of Devastation
17%inclusion27 decks159 decks
5%synergy
Migration Path
17%inclusion27 decks159 decks
14%synergy
Overwhelming Stampede
17%inclusion27 decks159 decks
5%synergy
Sea Gate Restoration
16%inclusion26 decks159 decks
11%synergy
Rishkar's Expertise
16%inclusion26 decks159 decks
8%synergy
Green Sun's Zenith
14%inclusion23 decks159 decks
6%synergy
Regrowth
12%inclusion19 decks159 decks
8%synergy
Rite of Replication
11%inclusion18 decks159 decks
4%synergy
Bridgeworks Battle
11%inclusion15 decks140 decks
6%synergy
Explosive Vegetation
10%inclusion16 decks159 decks
4%synergy
Windfall
9.4%inclusion15 decks159 decks
5%synergy
Distant Melody
9.4%inclusion15 decks159 decks
6%synergy
Harmonize
8.8%inclusion14 decks159 decks
3%synergy
Shamanic Revelation
8.8%inclusion14 decks159 decks
3%synergy
Into the North
8.2%inclusion13 decks159 decks
7%synergy
Open the Way
8.2%inclusion13 decks159 decks
6%synergy
Fabricate
7.5%inclusion12 decks159 decks
1%synergy
Flare of Cultivation
7.3%inclusion11 decks150 decks
5%synergy
Curse of the Swine
6.9%inclusion11 decks159 decks
-4%synergy
Ravenform
6.9%inclusion11 decks159 decks
2%synergy
Raise the Palisade
6.9%inclusion11 decks159 decks
1%synergy
Ponder
6.3%inclusion10 decks159 decks
-1%synergy
Polymorph
6.3%inclusion10 decks159 decks
6%synergy
Last March of the Ents
6.3%inclusion10 decks159 decks
3%synergy
Turntimber Symbiosis
6.3%inclusion10 decks159 decks
4%synergy
Ezuri's Predation
6.3%inclusion10 decks159 decks
-1%synergy
Doppelgang
5.7%inclusion9 decks158 decks
-1%synergy
Search for Tomorrow
5.7%inclusion9 decks159 decks
1%synergy
Urban Evolution
5.7%inclusion9 decks159 decks
-4%synergy
Lórien Revealed
5.0%inclusion8 decks159 decks
2%synergy
Expropriate
5.0%inclusion8 decks159 decks
3%synergy
Utility Artifacts
Lightning Greaves
46%inclusion73 decks159 decks
24%synergy
Swiftfoot Boots
36%inclusion57 decks159 decks
10%synergy
Helm of the Host
30%inclusion47 decks159 decks
24%synergy
Mirror Box
16%inclusion25 decks159 decks
12%synergy
The One Ring
15%inclusion24 decks159 decks
7%synergy
Combine Chrysalis
15%inclusion24 decks159 decks
11%synergy
Emerald Medallion
14%inclusion22 decks159 decks
11%synergy
Winter Orb
12%inclusion19 decks159 decks
12%synergy
Sapphire Medallion
10%inclusion16 decks159 decks
7%synergy
Coat of Arms
9.4%inclusion15 decks159 decks
8%synergy
The Great Henge
9.4%inclusion15 decks159 decks
0%synergy
Skullclamp
8.8%inclusion14 decks159 decks
8%synergy
Static Orb
8.2%inclusion13 decks159 decks
8%synergy
Idol of Oblivion
7.5%inclusion12 decks159 decks
4%synergy
Eldrazi Monument
7.5%inclusion12 decks159 decks
7%synergy
Proteus Staff
6.3%inclusion10 decks159 decks
6%synergy
Enchantments
Doubling Season
48%inclusion77 decks159 decks
39%synergy
Mystic Remora
45%inclusion72 decks159 decks
30%synergy
Kindred Discovery
34%inclusion54 decks159 decks
24%synergy
Sylvan Library
23%inclusion37 decks159 decks
14%synergy
Growing Rites of Itlimoc
17%inclusion27 decks159 decks
11%synergy
Primal Vigor
16%inclusion26 decks159 decks
13%synergy
Utopia Sprawl
15%inclusion24 decks159 decks
9%synergy
Beastmaster Ascension
15%inclusion24 decks159 decks
12%synergy
Exploration
14%inclusion23 decks159 decks
1%synergy
Verity Circle
14%inclusion23 decks159 decks
14%synergy
Wild Growth
14%inclusion23 decks159 decks
6%synergy
Cryptolith Rite
13%inclusion21 decks159 decks
10%synergy
Wilderness Reclamation
12%inclusion19 decks159 decks
3%synergy
Paradox Haze
12%inclusion19 decks159 decks
12%synergy
Propaganda
12%inclusion19 decks159 decks
5%synergy
Kenrith's Transformation
11%inclusion18 decks159 decks
7%synergy
Imprisoned in the Moon
10%inclusion16 decks159 decks
6%synergy
Opposition
10%inclusion16 decks159 decks
10%synergy
Dismiss into Dream
8.8%inclusion14 decks159 decks
9%synergy
Defense of the Heart
8.8%inclusion14 decks159 decks
7%synergy
Impostor Syndrome
8.8%inclusion5 decks57 decks
7%synergy
Moonlit Meditation
8.6%inclusion6 decks70 decks
7%synergy
Asceticism
8.2%inclusion13 decks159 decks
5%synergy
Garruk's Uprising
7.5%inclusion12 decks159 decks
-9%synergy
Carpet of Flowers
5.7%inclusion9 decks159 decks
3%synergy
Unnatural Growth
5.7%inclusion9 decks159 decks
2%synergy
Song of the Dryads
5.7%inclusion9 decks159 decks
4%synergy
Burgeoning
5.7%inclusion9 decks159 decks
-1%synergy
Leyline of Anticipation
5.7%inclusion9 decks159 decks
1%synergy
Planeswalkers
Oko, Thief of Crowns
41%inclusion65 decks159 decks
34%synergy
Narset, Parter of Veils
6.3%inclusion10 decks159 decks
5%synergy
Utility Lands
Reliquary Tower
59%inclusion94 decks159 decks
9%synergy
Boseiju, Who Endures
45%inclusion72 decks159 decks
23%synergy
Otawara, Soaring City
38%inclusion60 decks159 decks
19%synergy
Command Beacon
34%inclusion54 decks159 decks
30%synergy
Yavimaya, Cradle of Growth
32%inclusion51 decks159 decks
10%synergy
Mystic Sanctuary
25%inclusion39 decks159 decks
12%synergy
Mistrise Village
20%inclusion20 decks98 decks
10%synergy
Three Tree City
19%inclusion27 decks139 decks
14%synergy
Evendo, Waking Haven
18%inclusion13 decks71 decks
13%synergy
Alchemist's Refuge
17%inclusion27 decks159 decks
0%synergy
Temple of the False God
16%inclusion25 decks159 decks
0%synergy
Castle Garenbrig
15%inclusion24 decks159 decks
11%synergy
Mosswort Bridge
13%inclusion20 decks159 decks
-5%synergy
Gaea's Cradle
10%inclusion16 decks159 decks
3%synergy
Rogue's Passage
9.4%inclusion15 decks159 decks
-12%synergy
Urza's Saga
8.8%inclusion14 decks159 decks
3%synergy
Castle Vantress
6.9%inclusion11 decks159 decks
0%synergy
Scavenger Grounds
5.7%inclusion9 decks159 decks
1%synergy
Mana Artifacts
Sol Ring
92%inclusion147 decks159 decks
12%synergy
Arcane Signet
76%inclusion121 decks159 decks
13%synergy
Talisman of Curiosity
42%inclusion66 decks159 decks
20%synergy
Thought Vessel
41%inclusion65 decks159 decks
21%synergy
Simic Signet
36%inclusion58 decks159 decks
5%synergy
Fellwar Stone
13%inclusion21 decks159 decks
4%synergy
Thran Dynamo
6.3%inclusion10 decks159 decks
3%synergy
Commander's Sphere
5.7%inclusion9 decks159 decks
-3%synergy
Lotus Petal
5.7%inclusion9 decks159 decks
-1%synergy
Chrome Mox
5.7%inclusion9 decks159 decks
-1%synergy
Lands
Command Tower
94%inclusion150 decks159 decks
9%synergy
Forest
88%inclusion140 decks159 decks
-7%synergy
Island
87%inclusion139 decks159 decks
-8%synergy
Breeding Pool
74%inclusion118 decks159 decks
29%synergy
Hinterland Harbor
70%inclusion112 decks159 decks
11%synergy
Rejuvenating Springs
67%inclusion107 decks159 decks
23%synergy
Yavimaya Coast
64%inclusion102 decks159 decks
12%synergy
Dreamroot Cascade
57%inclusion91 decks159 decks
15%synergy
Misty Rainforest
52%inclusion82 decks159 decks
20%synergy
Flooded Grove
50%inclusion79 decks159 decks
9%synergy
Simic Growth Chamber
47%inclusion75 decks159 decks
-1%synergy
Barkchannel Pathway
43%inclusion69 decks159 decks
23%synergy
Waterlogged Grove
39%inclusion62 decks159 decks
18%synergy
Vineglimmer Snarl
33%inclusion53 decks159 decks
-5%synergy
Hedge Maze
29%inclusion46 decks158 decks
10%synergy
Temple of Mystery
26%inclusion42 decks159 decks
-12%synergy
Fabled Passage
25%inclusion39 decks159 decks
10%synergy
Exotic Orchard
24%inclusion38 decks159 decks
0%synergy
Willowrush Verge
23%inclusion27 decks116 decks
7%synergy
Rimewood Falls
23%inclusion37 decks159 decks
14%synergy
Sink into Stupor
23%inclusion32 decks140 decks
11%synergy
Prismatic Vista
23%inclusion36 decks159 decks
15%synergy
Bala Ged Recovery
23%inclusion36 decks159 decks
13%synergy
Myriad Landscape
21%inclusion33 decks159 decks
-1%synergy
Tropical Island
20%inclusion32 decks159 decks
6%synergy
Tangled Islet
18%inclusion29 decks159 decks
2%synergy
Snow-Covered Island
18%inclusion28 decks159 decks
11%synergy
Snow-Covered Forest
18%inclusion28 decks159 decks
11%synergy
Sea Gate Restoration
16%inclusion26 decks159 decks
11%synergy
Overflowing Basin
15%inclusion23 decks151 decks
-4%synergy
Windswept Heath
14%inclusion23 decks159 decks
4%synergy
Verdant Catacombs
14%inclusion22 decks159 decks
4%synergy
Botanical Sanctum
13%inclusion21 decks159 decks
1%synergy
Evolving Wilds
13%inclusion20 decks159 decks
-13%synergy
Flooded Strand
13%inclusion20 decks159 decks
1%synergy
Glasspool Mimic
12%inclusion19 decks159 decks
8%synergy
Scalding Tarn
12%inclusion19 decks159 decks
2%synergy
Polluted Delta
12%inclusion19 decks159 decks
2%synergy
Hydroelectric Specimen
11%inclusion15 decks140 decks
5%synergy
Bridgeworks Battle
11%inclusion15 decks140 decks
6%synergy
Wooded Foothills
11%inclusion17 decks159 decks
1%synergy
Blighted Woodland
8.8%inclusion14 decks159 decks
1%synergy
Thornwood Falls
8.8%inclusion14 decks159 decks
-9%synergy
Littjara Mirrorlake
8.2%inclusion13 decks159 decks
4%synergy
Disciple of Freyalise
7.9%inclusion11 decks140 decks
3%synergy
Mana Confluence
6.9%inclusion11 decks159 decks
1%synergy
Terramorphic Expanse
6.3%inclusion10 decks159 decks
-14%synergy
Turntimber Symbiosis
6.3%inclusion10 decks159 decks
4%synergy
Demolition Field
5.7%inclusion9 decks159 decks
3%synergy
Plaza of Heroes
5.7%inclusion9 decks159 decks
4%synergy
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