Koma, Cosmos Serpent (Commander) - Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #296
161decks
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
15%inclusion4 decks26 decks
11%synergy
Agna Qel'a
8.7%inclusion2 decks23 decks
8%synergy
Shared Roots
8.3%inclusion2 decks24 decks
6%synergy
Wan Shi Tong, Librarian
7.4%inclusion2 decks27 decks
3%synergy
Crashing Wave
4.3%inclusion1 decks23 decks
4%synergy
High Synergy Cards
Elemental Bond
79%inclusion127 decks161 decks
73%synergy
Adrix and Nev, Twincasters
80%inclusion128 decks161 decks
71%synergy
Whelming Wave
78%inclusion125 decks161 decks
66%synergy
Spark Double
74%inclusion119 decks161 decks
64%synergy
Sakashima of a Thousand Faces
63%inclusion101 decks161 decks
58%synergy
Parallel Lives
63%inclusion102 decks161 decks
57%synergy
Serpent of Yawning Depths
53%inclusion86 decks161 decks
47%synergy
Junk Winder
52%inclusion83 decks161 decks
45%synergy
Irenicus's Vile Duplication
49%inclusion79 decks161 decks
43%synergy
Koma, World-Eater
54%inclusion68 decks125 decks
41%synergy
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Cultivate
77%inclusion124 decks161 decks
30%synergy
Counterspell
72%inclusion116 decks161 decks
22%synergy
Nature's Lore
68%inclusion109 decks161 decks
37%synergy
Kodama's Reach
65%inclusion105 decks161 decks
29%synergy
Beast Within
64%inclusion103 decks161 decks
14%synergy
Three Visits
62%inclusion100 decks161 decks
39%synergy
Heroic Intervention
61%inclusion99 decks161 decks
31%synergy
Rampant Growth
60%inclusion97 decks161 decks
20%synergy
Mana Drain
53%inclusion86 decks161 decks
38%synergy
Birds of Paradise
53%inclusion86 decks161 decks
26%synergy
Game Changers
Cyclonic Rift
65%inclusion105 decks161 decks
39%synergy
Rhystic Study
56%inclusion90 decks161 decks
34%synergy
Fierce Guardianship
52%inclusion84 decks161 decks
35%synergy
Seedborn Muse
35%inclusion56 decks161 decks
19%synergy
Consecrated Sphinx
32%inclusion51 decks161 decks
23%synergy
Force of Will
28%inclusion45 decks161 decks
18%synergy
Worldly Tutor
27%inclusion43 decks161 decks
11%synergy
Mystical Tutor
25%inclusion40 decks161 decks
15%synergy
Ancient Tomb
24%inclusion39 decks161 decks
15%synergy
Mana Vault
16%inclusion26 decks161 decks
10%synergy
Creatures
Aesi, Tyrant of Gyre Strait
50%inclusion80 decks161 decks
33%synergy
Spawning Kraken
43%inclusion70 decks161 decks
36%synergy
Sakashima the Impostor
42%inclusion68 decks161 decks
40%synergy
Llanowar Elves
41%inclusion66 decks161 decks
13%synergy
Elvish Mystic
39%inclusion63 decks161 decks
15%synergy
Sakura-Tribe Elder
38%inclusion61 decks161 decks
18%synergy
Craterhoof Behemoth
35%inclusion56 decks161 decks
25%synergy
Eternal Witness
34%inclusion54 decks161 decks
12%synergy
Fyndhorn Elves
33%inclusion53 decks161 decks
17%synergy
Roaming Throne
32%inclusion52 decks161 decks
24%synergy
Hullbreaker Horror
32%inclusion52 decks161 decks
15%synergy
Tatyova, Benthic Druid
31%inclusion50 decks161 decks
0%synergy
Arixmethes, Slumbering Isle
31%inclusion50 decks161 decks
18%synergy
Garruk's Packleader
27%inclusion44 decks161 decks
25%synergy
Summon: Leviathan
24%inclusion20 decks83 decks
17%synergy
Enduring Vitality
22%inclusion30 decks134 decks
15%synergy
Delighted Halfling
21%inclusion34 decks161 decks
10%synergy
Murkfiend Liege
20%inclusion33 decks161 decks
6%synergy
Ohran Frostfang
20%inclusion33 decks161 decks
17%synergy
Octomancer
20%inclusion27 decks137 decks
15%synergy
Archetype of Imagination
19%inclusion30 decks161 decks
14%synergy
Uro, Titan of Nature's Wrath
18%inclusion29 decks161 decks
8%synergy
Enduring Curiosity
16%inclusion21 decks134 decks
12%synergy
Starwinder
15%inclusion10 decks65 decks
9%synergy
Fanatic of Rhonas
15%inclusion21 decks138 decks
9%synergy
Toski, Bearer of Secrets
14%inclusion23 decks161 decks
11%synergy
Slinn Voda, the Rising Deep
13%inclusion21 decks161 decks
6%synergy
Esix, Fractal Bloom
13%inclusion21 decks161 decks
9%synergy
Chameleon, Master of Disguise
12%inclusion6 decks50 decks
10%synergy
Saryth, the Viper's Fang
12%inclusion19 decks161 decks
10%synergy
Coiling Oracle
12%inclusion19 decks161 decks
-2%synergy
Lotus Cobra
12%inclusion19 decks161 decks
-2%synergy
Glasspool Mimic
12%inclusion19 decks161 decks
7%synergy
Tireless Provisioner
11%inclusion18 decks161 decks
-4%synergy
Nezahal, Primal Tide
11%inclusion17 decks161 decks
-1%synergy
Hydroelectric Specimen
10%inclusion14 decks138 decks
4%synergy
Gala Greeters
10%inclusion16 decks161 decks
8%synergy
Curiosity Crafter
9.3%inclusion15 decks161 decks
6%synergy
Azusa, Lost but Seeking
9.3%inclusion15 decks161 decks
-5%synergy
Troyan, Gutsy Explorer
8.7%inclusion14 decks161 decks
5%synergy
Stormtide Leviathan
8.7%inclusion14 decks161 decks
3%synergy
Scourge of Fleets
8.7%inclusion14 decks161 decks
1%synergy
Scute Swarm
8.7%inclusion14 decks161 decks
-12%synergy
Avenger of Zendikar
8.1%inclusion13 decks161 decks
-10%synergy
Sphinx of the Second Sun
8.1%inclusion13 decks161 decks
7%synergy
Kinnan, Bonder Prodigy
8.1%inclusion13 decks161 decks
5%synergy
Guardian Augmenter
8.1%inclusion13 decks161 decks
7%synergy
Disciple of Freyalise
8.0%inclusion11 decks138 decks
3%synergy
Reclamation Sage
7.5%inclusion12 decks161 decks
-7%synergy
Arbor Elf
7.5%inclusion12 decks161 decks
1%synergy
Instants
An Offer You Can't Refuse
51%inclusion82 decks161 decks
28%synergy
Arcane Denial
45%inclusion73 decks161 decks
23%synergy
Swan Song
44%inclusion71 decks161 decks
25%synergy
Growth Spiral
43%inclusion70 decks161 decks
-1%synergy
Pongify
42%inclusion67 decks161 decks
17%synergy
Rapid Hybridization
40%inclusion65 decks161 decks
14%synergy
Negate
38%inclusion61 decks161 decks
12%synergy
Double Major
33%inclusion53 decks161 decks
24%synergy
Second Harvest
29%inclusion46 decks161 decks
22%synergy
Return of the Wildspeaker
27%inclusion43 decks161 decks
16%synergy
Reality Shift
26%inclusion42 decks161 decks
11%synergy
Force of Negation
26%inclusion42 decks161 decks
18%synergy
Nature's Claim
24%inclusion39 decks161 decks
14%synergy
Sink into Stupor
23%inclusion32 decks138 decks
12%synergy
Pact of Negation
23%inclusion37 decks161 decks
16%synergy
Planar Genesis
21%inclusion29 decks138 decks
10%synergy
Krosan Grip
20%inclusion32 decks161 decks
12%synergy
Chord of Calling
20%inclusion32 decks161 decks
12%synergy
Harrow
18%inclusion29 decks161 decks
6%synergy
Brainstorm
17%inclusion28 decks161 decks
3%synergy
Tamiyo's Safekeeping
17%inclusion28 decks161 decks
12%synergy
Simic Charm
16%inclusion26 decks161 decks
8%synergy
Resculpt
16%inclusion25 decks161 decks
9%synergy
Archdruid's Charm
15%inclusion23 decks156 decks
9%synergy
Voidslime
13%inclusion21 decks161 decks
8%synergy
Stubborn Denial
12%inclusion20 decks161 decks
10%synergy
Return to Nature
12%inclusion20 decks161 decks
7%synergy
Plasm Capture
12%inclusion19 decks161 decks
8%synergy
Tyvar's Stand
12%inclusion19 decks161 decks
9%synergy
Force of Vigor
12%inclusion19 decks161 decks
7%synergy
Disallow
11%inclusion18 decks161 decks
9%synergy
Crop Rotation
11%inclusion17 decks161 decks
-3%synergy
Strix Serenade
10%inclusion14 decks138 decks
6%synergy
Collective Resistance
10%inclusion14 decks138 decks
7%synergy
Eureka Moment
10%inclusion16 decks161 decks
-1%synergy
Mystic Reflection
10%inclusion16 decks161 decks
7%synergy
Noxious Revival
10%inclusion16 decks161 decks
4%synergy
Joint Exploration
10%inclusion16 decks161 decks
4%synergy
Snakeskin Veil
9.3%inclusion15 decks161 decks
4%synergy
Entish Restoration
9.3%inclusion15 decks161 decks
0%synergy
Aetherize
9.3%inclusion15 decks161 decks
-2%synergy
Consult the Star Charts
9.0%inclusion6 decks67 decks
7%synergy
Slip Out the Back
8.1%inclusion13 decks161 decks
4%synergy
Narset's Reversal
8.1%inclusion13 decks161 decks
6%synergy
Three Steps Ahead
7.5%inclusion11 decks147 decks
5%synergy
Mizzium Skin
7.5%inclusion12 decks161 decks
7%synergy
Muddle the Mixture
6.8%inclusion11 decks161 decks
2%synergy
Frantic Search
6.8%inclusion11 decks161 decks
1%synergy
Perplexing Test
6.8%inclusion11 decks161 decks
2%synergy
Wash Away
6.8%inclusion11 decks161 decks
5%synergy
Sorceries
Farseek
52%inclusion83 decks161 decks
27%synergy
Skyshroud Claim
42%inclusion68 decks161 decks
33%synergy
Quantum Misalignment
26%inclusion42 decks161 decks
23%synergy
Triumph of the Hordes
24%inclusion38 decks161 decks
21%synergy
Bala Ged Recovery
22%inclusion36 decks161 decks
12%synergy
Sea Gate Restoration
19%inclusion30 decks161 decks
13%synergy
Finale of Devastation
17%inclusion28 decks161 decks
6%synergy
Explore
17%inclusion28 decks161 decks
-3%synergy
Rishkar's Expertise
17%inclusion27 decks161 decks
8%synergy
Migration Path
17%inclusion27 decks161 decks
13%synergy
Overwhelming Stampede
17%inclusion27 decks161 decks
5%synergy
Green Sun's Zenith
16%inclusion25 decks161 decks
7%synergy
Regrowth
11%inclusion18 decks161 decks
7%synergy
Rite of Replication
11%inclusion18 decks161 decks
4%synergy
Explosive Vegetation
11%inclusion17 decks161 decks
5%synergy
Bridgeworks Battle
10%inclusion14 decks138 decks
5%synergy
Distant Melody
10%inclusion16 decks161 decks
7%synergy
Windfall
9.3%inclusion15 decks161 decks
5%synergy
Into the North
8.1%inclusion13 decks161 decks
7%synergy
Harmonize
8.1%inclusion13 decks161 decks
2%synergy
Shamanic Revelation
8.1%inclusion13 decks161 decks
3%synergy
Fabricate
7.5%inclusion12 decks161 decks
1%synergy
Open the Way
7.5%inclusion12 decks161 decks
5%synergy
Flare of Cultivation
7.4%inclusion11 decks149 decks
5%synergy
Turntimber Symbiosis
6.8%inclusion11 decks161 decks
4%synergy
Ravenform
6.8%inclusion11 decks161 decks
2%synergy
Raise the Palisade
6.8%inclusion11 decks161 decks
0%synergy
Ponder
6.2%inclusion10 decks161 decks
-1%synergy
Polymorph
6.2%inclusion10 decks161 decks
6%synergy
Last March of the Ents
6.2%inclusion10 decks161 decks
2%synergy
Curse of the Swine
6.2%inclusion10 decks161 decks
-5%synergy
Urban Evolution
6.2%inclusion10 decks161 decks
-3%synergy
Doppelgang
5.7%inclusion9 decks157 decks
-1%synergy
Search for Tomorrow
5.6%inclusion9 decks161 decks
1%synergy
Expropriate
5.6%inclusion9 decks161 decks
4%synergy
Ezuri's Predation
5.6%inclusion9 decks161 decks
-2%synergy
Utility Artifacts
Lightning Greaves
46%inclusion74 decks161 decks
24%synergy
Swiftfoot Boots
35%inclusion56 decks161 decks
9%synergy
Helm of the Host
31%inclusion50 decks161 decks
26%synergy
The One Ring
15%inclusion24 decks161 decks
7%synergy
Mirror Box
15%inclusion24 decks161 decks
11%synergy
Combine Chrysalis
14%inclusion23 decks161 decks
10%synergy
Emerald Medallion
14%inclusion22 decks161 decks
11%synergy
Winter Orb
11%inclusion18 decks161 decks
11%synergy
The Great Henge
11%inclusion17 decks161 decks
2%synergy
Sapphire Medallion
11%inclusion17 decks161 decks
7%synergy
Coat of Arms
10%inclusion16 decks161 decks
9%synergy
Skullclamp
8.7%inclusion14 decks161 decks
8%synergy
Idol of Oblivion
8.1%inclusion13 decks161 decks
5%synergy
Static Orb
7.5%inclusion12 decks161 decks
7%synergy
Eldrazi Monument
7.5%inclusion12 decks161 decks
7%synergy
Proteus Staff
6.2%inclusion10 decks161 decks
6%synergy
Enchantments
Doubling Season
50%inclusion80 decks161 decks
40%synergy
Tribute to the World Tree
47%inclusion76 decks161 decks
41%synergy
Mystic Remora
43%inclusion70 decks161 decks
28%synergy
Kindred Discovery
34%inclusion54 decks161 decks
24%synergy
Sylvan Library
24%inclusion38 decks161 decks
14%synergy
Beastmaster Ascension
17%inclusion27 decks161 decks
14%synergy
Primal Vigor
17%inclusion27 decks161 decks
14%synergy
Utopia Sprawl
16%inclusion26 decks161 decks
10%synergy
Growing Rites of Itlimoc
16%inclusion25 decks161 decks
9%synergy
Wild Growth
15%inclusion24 decks161 decks
6%synergy
Exploration
14%inclusion23 decks161 decks
1%synergy
Cryptolith Rite
14%inclusion22 decks161 decks
11%synergy
Verity Circle
14%inclusion22 decks161 decks
13%synergy
Paradox Haze
12%inclusion20 decks161 decks
12%synergy
Propaganda
12%inclusion20 decks161 decks
6%synergy
Wilderness Reclamation
11%inclusion18 decks161 decks
2%synergy
Kenrith's Transformation
11%inclusion18 decks161 decks
7%synergy
Imprisoned in the Moon
10%inclusion16 decks161 decks
6%synergy
Opposition
10%inclusion16 decks161 decks
10%synergy
Impostor Syndrome
10%inclusion5 decks52 decks
7%synergy
Dismiss into Dream
9.3%inclusion15 decks161 decks
9%synergy
Moonlit Meditation
9.1%inclusion6 decks66 decks
8%synergy
Asceticism
8.7%inclusion14 decks161 decks
5%synergy
Defense of the Heart
8.7%inclusion14 decks161 decks
6%synergy
Garruk's Uprising
8.1%inclusion13 decks161 decks
-8%synergy
Carpet of Flowers
6.2%inclusion10 decks161 decks
3%synergy
Unnatural Growth
5.6%inclusion9 decks161 decks
2%synergy
Song of the Dryads
5.6%inclusion9 decks161 decks
4%synergy
Burgeoning
5.6%inclusion9 decks161 decks
-1%synergy
Leyline of Anticipation
5.6%inclusion9 decks161 decks
1%synergy
Planeswalkers
Oko, Thief of Crowns
40%inclusion65 decks161 decks
33%synergy
Narset, Parter of Veils
6.2%inclusion10 decks161 decks
5%synergy
Utility Lands
Reliquary Tower
58%inclusion94 decks161 decks
8%synergy
Boseiju, Who Endures
46%inclusion74 decks161 decks
24%synergy
Otawara, Soaring City
39%inclusion62 decks161 decks
20%synergy
Command Beacon
35%inclusion57 decks161 decks
31%synergy
Yavimaya, Cradle of Growth
33%inclusion53 decks161 decks
11%synergy
Mystic Sanctuary
25%inclusion40 decks161 decks
12%synergy
Mistrise Village
20%inclusion19 decks95 decks
9%synergy
Three Tree City
20%inclusion27 decks137 decks
15%synergy
Evendo, Waking Haven
18%inclusion12 decks67 decks
13%synergy
Alchemist's Refuge
16%inclusion26 decks161 decks
-1%synergy
Castle Garenbrig
16%inclusion25 decks161 decks
11%synergy
Temple of the False God
14%inclusion23 decks161 decks
-1%synergy
Mosswort Bridge
12%inclusion20 decks161 decks
-5%synergy
Gaea's Cradle
12%inclusion19 decks161 decks
5%synergy
Urza's Saga
9.3%inclusion15 decks161 decks
4%synergy
Rogue's Passage
9.3%inclusion15 decks161 decks
-13%synergy
Castle Vantress
6.8%inclusion11 decks161 decks
0%synergy
Scavenger Grounds
5.6%inclusion9 decks161 decks
1%synergy
Mana Artifacts
Sol Ring
92%inclusion148 decks161 decks
11%synergy
Arcane Signet
76%inclusion122 decks161 decks
13%synergy
Talisman of Curiosity
42%inclusion67 decks161 decks
20%synergy
Thought Vessel
40%inclusion64 decks161 decks
19%synergy
Simic Signet
37%inclusion60 decks161 decks
5%synergy
Fellwar Stone
12%inclusion20 decks161 decks
3%synergy
Commander's Sphere
6.2%inclusion10 decks161 decks
-2%synergy
Lotus Petal
6.2%inclusion10 decks161 decks
-1%synergy
Thran Dynamo
6.2%inclusion10 decks161 decks
3%synergy
Chrome Mox
5.6%inclusion9 decks161 decks
-1%synergy
Lands
Command Tower
93%inclusion150 decks161 decks
8%synergy
Forest
88%inclusion141 decks161 decks
-8%synergy
Island
87%inclusion140 decks161 decks
-8%synergy
Breeding Pool
73%inclusion118 decks161 decks
28%synergy
Hinterland Harbor
71%inclusion114 decks161 decks
12%synergy
Rejuvenating Springs
68%inclusion109 decks161 decks
24%synergy
Yavimaya Coast
63%inclusion101 decks161 decks
10%synergy
Dreamroot Cascade
57%inclusion92 decks161 decks
15%synergy
Misty Rainforest
53%inclusion85 decks161 decks
22%synergy
Flooded Grove
50%inclusion80 decks161 decks
9%synergy
Simic Growth Chamber
47%inclusion75 decks161 decks
-2%synergy
Barkchannel Pathway
44%inclusion71 decks161 decks
24%synergy
Waterlogged Grove
39%inclusion63 decks161 decks
19%synergy
Vineglimmer Snarl
32%inclusion52 decks161 decks
-6%synergy
Hedge Maze
29%inclusion45 decks157 decks
9%synergy
Temple of Mystery
25%inclusion41 decks161 decks
-13%synergy
Fabled Passage
24%inclusion38 decks161 decks
9%synergy
Sink into Stupor
23%inclusion32 decks138 decks
12%synergy
Willowrush Verge
23%inclusion26 decks113 decks
7%synergy
Prismatic Vista
23%inclusion37 decks161 decks
16%synergy
Exotic Orchard
23%inclusion37 decks161 decks
-1%synergy
Rimewood Falls
23%inclusion37 decks161 decks
14%synergy
Bala Ged Recovery
22%inclusion36 decks161 decks
12%synergy
Myriad Landscape
21%inclusion34 decks161 decks
-1%synergy
Tropical Island
21%inclusion34 decks161 decks
7%synergy
Sea Gate Restoration
19%inclusion30 decks161 decks
13%synergy
Tangled Islet
18%inclusion29 decks161 decks
2%synergy
Snow-Covered Island
17%inclusion28 decks161 decks
11%synergy
Snow-Covered Forest
17%inclusion28 decks161 decks
11%synergy
Windswept Heath
15%inclusion24 decks161 decks
5%synergy
Verdant Catacombs
14%inclusion23 decks161 decks
5%synergy
Overflowing Basin
14%inclusion21 decks150 decks
-5%synergy
Botanical Sanctum
14%inclusion22 decks161 decks
1%synergy
Flooded Strand
13%inclusion21 decks161 decks
2%synergy
Scalding Tarn
12%inclusion20 decks161 decks
3%synergy
Polluted Delta
12%inclusion20 decks161 decks
2%synergy
Evolving Wilds
12%inclusion19 decks161 decks
-13%synergy
Glasspool Mimic
12%inclusion19 decks161 decks
7%synergy
Wooded Foothills
11%inclusion17 decks161 decks
1%synergy
Hydroelectric Specimen
10%inclusion14 decks138 decks
4%synergy
Bridgeworks Battle
10%inclusion14 decks138 decks
5%synergy
Blighted Woodland
8.7%inclusion14 decks161 decks
1%synergy
Thornwood Falls
8.7%inclusion14 decks161 decks
-9%synergy
Littjara Mirrorlake
8.1%inclusion13 decks161 decks
4%synergy
Disciple of Freyalise
8.0%inclusion11 decks138 decks
3%synergy
Turntimber Symbiosis
6.8%inclusion11 decks161 decks
4%synergy
Mana Confluence
6.8%inclusion11 decks161 decks
1%synergy
Terramorphic Expanse
6.2%inclusion10 decks161 decks
-14%synergy
Demolition Field
5.6%inclusion9 decks161 decks
3%synergy
Plaza of Heroes
5.6%inclusion9 decks161 decks
4%synergy
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