Koma, Cosmos Serpent (Commander) - Optimized

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #296
271decks
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
6.5%inclusion3 decks46 decks
2%synergy
Wan Shi Tong, Librarian
6.1%inclusion3 decks49 decks
1%synergy
Badgermole Cub
4.1%inclusion2 decks49 decks
0%synergy
Agna Qel'a
2.4%inclusion1 decks41 decks
2%synergy
The Cabbage Merchant
0.9%inclusion1 decks106 decks
0%synergy
High Synergy Cards
Adrix and Nev, Twincasters
82%inclusion222 decks271 decks
73%synergy
Parallel Lives
74%inclusion200 decks271 decks
68%synergy
Spark Double
76%inclusion205 decks271 decks
66%synergy
Sakashima of a Thousand Faces
69%inclusion187 decks271 decks
64%synergy
Elemental Bond
68%inclusion184 decks271 decks
62%synergy
Whelming Wave
67%inclusion181 decks271 decks
55%synergy
Doubling Season
62%inclusion169 decks271 decks
53%synergy
Serpent of Yawning Depths
58%inclusion157 decks271 decks
52%synergy
Sakashima the Impostor
54%inclusion146 decks271 decks
51%synergy
Mana Drain
62%inclusion169 decks271 decks
47%synergy
Top Cards
Counterspell
76%inclusion207 decks271 decks
26%synergy
Cultivate
73%inclusion198 decks271 decks
26%synergy
Birds of Paradise
68%inclusion184 decks271 decks
40%synergy
Kodama's Reach
68%inclusion183 decks271 decks
31%synergy
Heroic Intervention
64%inclusion174 decks271 decks
34%synergy
Nature's Lore
64%inclusion173 decks271 decks
33%synergy
Beast Within
61%inclusion164 decks271 decks
10%synergy
Rampant Growth
59%inclusion159 decks271 decks
18%synergy
Three Visits
58%inclusion156 decks271 decks
35%synergy
Koma, World-Eater
58%inclusion153 decks266 decks
44%synergy
Game Changers
Cyclonic Rift
79%inclusion215 decks271 decks
53%synergy
Rhystic Study
75%inclusion204 decks271 decks
53%synergy
Fierce Guardianship
67%inclusion182 decks271 decks
50%synergy
Worldly Tutor
47%inclusion127 decks271 decks
31%synergy
Seedborn Muse
46%inclusion126 decks271 decks
31%synergy
Mystical Tutor
42%inclusion113 decks271 decks
32%synergy
Force of Will
40%inclusion109 decks271 decks
30%synergy
Consecrated Sphinx
37%inclusion101 decks271 decks
29%synergy
Ancient Tomb
34%inclusion91 decks271 decks
24%synergy
Mana Vault
21%inclusion57 decks271 decks
15%synergy
Creatures
Llanowar Elves
51%inclusion138 decks271 decks
23%synergy
Craterhoof Behemoth
49%inclusion134 decks271 decks
40%synergy
Aesi, Tyrant of Gyre Strait
48%inclusion131 decks271 decks
31%synergy
Spawning Kraken
46%inclusion125 decks271 decks
39%synergy
Junk Winder
44%inclusion120 decks271 decks
38%synergy
Elvish Mystic
44%inclusion118 decks271 decks
19%synergy
Ohran Frostfang
34%inclusion93 decks271 decks
31%synergy
Roaming Throne
33%inclusion90 decks271 decks
25%synergy
Eternal Witness
31%inclusion85 decks271 decks
10%synergy
Fyndhorn Elves
31%inclusion85 decks271 decks
16%synergy
Arixmethes, Slumbering Isle
30%inclusion82 decks271 decks
17%synergy
Tatyova, Benthic Druid
28%inclusion77 decks271 decks
-3%synergy
Sakura-Tribe Elder
28%inclusion75 decks271 decks
8%synergy
Enduring Vitality
28%inclusion74 decks269 decks
20%synergy
Hullbreaker Horror
25%inclusion68 decks271 decks
7%synergy
Murkfiend Liege
24%inclusion66 decks271 decks
10%synergy
Garruk's Packleader
24%inclusion64 decks271 decks
21%synergy
Fanatic of Rhonas
22%inclusion60 decks270 decks
16%synergy
Delighted Halfling
21%inclusion57 decks271 decks
10%synergy
Azusa, Lost but Seeking
18%inclusion50 decks271 decks
4%synergy
Archetype of Imagination
18%inclusion50 decks271 decks
14%synergy
Summon: Leviathan
17%inclusion32 decks183 decks
10%synergy
Slinn Voda, the Rising Deep
14%inclusion39 decks271 decks
8%synergy
Esix, Fractal Bloom
13%inclusion36 decks271 decks
9%synergy
Toski, Bearer of Secrets
13%inclusion35 decks271 decks
9%synergy
Kinnan, Bonder Prodigy
13%inclusion34 decks271 decks
9%synergy
Octomancer
12%inclusion33 decks270 decks
7%synergy
Nezahal, Primal Tide
12%inclusion33 decks271 decks
1%synergy
Scute Swarm
12%inclusion32 decks271 decks
-9%synergy
Saryth, the Viper's Fang
11%inclusion31 decks271 decks
10%synergy
Coiling Oracle
11%inclusion31 decks271 decks
-2%synergy
Curiosity Crafter
11%inclusion30 decks271 decks
8%synergy
Enduring Curiosity
11%inclusion29 decks269 decks
7%synergy
Uro, Titan of Nature's Wrath
11%inclusion29 decks271 decks
1%synergy
Circle of Dreams Druid
10%inclusion28 decks271 decks
8%synergy
Lotus Cobra
10%inclusion28 decks271 decks
-4%synergy
Tireless Provisioner
10%inclusion27 decks271 decks
-5%synergy
Glasspool Mimic
10%inclusion26 decks271 decks
5%synergy
Reclamation Sage
8.5%inclusion23 decks271 decks
-6%synergy
Vorinclex, Voice of Hunger
8.5%inclusion23 decks271 decks
5%synergy
Avenger of Zendikar
8.1%inclusion22 decks271 decks
-10%synergy
Selvala, Heart of the Wilds
8.1%inclusion22 decks271 decks
5%synergy
Xolatoyac, the Smiling Flood
7.7%inclusion21 decks271 decks
0%synergy
Arbor Elf
7.7%inclusion21 decks271 decks
1%synergy
Faerie Mastermind
7.7%inclusion21 decks271 decks
3%synergy
Oracle of Mul Daya
7.4%inclusion20 decks271 decks
-1%synergy
Dryad of the Ilysian Grove
7.4%inclusion20 decks271 decks
-3%synergy
Hydroelectric Specimen
7.0%inclusion19 decks270 decks
1%synergy
Inga and Esika
6.6%inclusion18 decks271 decks
4%synergy
Phyrexian Metamorph
6.6%inclusion18 decks271 decks
-2%synergy
Instants
Swan Song
54%inclusion145 decks271 decks
34%synergy
Pongify
45%inclusion123 decks271 decks
21%synergy
An Offer You Can't Refuse
44%inclusion119 decks271 decks
21%synergy
Growth Spiral
43%inclusion116 decks271 decks
-2%synergy
Double Major
38%inclusion103 decks271 decks
30%synergy
Arcane Denial
36%inclusion98 decks271 decks
14%synergy
Negate
36%inclusion97 decks271 decks
10%synergy
Rapid Hybridization
34%inclusion91 decks271 decks
7%synergy
Second Harvest
32%inclusion87 decks271 decks
26%synergy
Force of Negation
31%inclusion83 decks271 decks
22%synergy
Return of the Wildspeaker
23%inclusion63 decks271 decks
13%synergy
Pact of Negation
23%inclusion62 decks271 decks
16%synergy
Sink into Stupor
19%inclusion50 decks270 decks
7%synergy
Chord of Calling
17%inclusion47 decks271 decks
10%synergy
Krosan Grip
17%inclusion45 decks271 decks
9%synergy
Brainstorm
15%inclusion42 decks271 decks
1%synergy
Nature's Claim
15%inclusion42 decks271 decks
5%synergy
Reality Shift
15%inclusion41 decks271 decks
1%synergy
Voidslime
14%inclusion39 decks271 decks
9%synergy
Tamiyo's Safekeeping
14%inclusion37 decks271 decks
8%synergy
Archdruid's Charm
13%inclusion35 decks271 decks
7%synergy
Mystic Reflection
12%inclusion33 decks271 decks
10%synergy
Strix Serenade
12%inclusion32 decks270 decks
8%synergy
Planar Genesis
12%inclusion32 decks270 decks
1%synergy
Noxious Revival
12%inclusion32 decks271 decks
6%synergy
Crop Rotation
11%inclusion30 decks271 decks
-2%synergy
Harrow
11%inclusion30 decks271 decks
-1%synergy
Stubborn Denial
11%inclusion30 decks271 decks
8%synergy
Force of Vigor
11%inclusion29 decks271 decks
6%synergy
Resculpt
10%inclusion26 decks271 decks
3%synergy
Simic Charm
9.2%inclusion25 decks271 decks
1%synergy
Muddle the Mixture
8.1%inclusion22 decks271 decks
4%synergy
Narset's Reversal
7.7%inclusion21 decks271 decks
6%synergy
Snakeskin Veil
7.4%inclusion20 decks271 decks
2%synergy
Return to Nature
7.4%inclusion20 decks271 decks
2%synergy
Flusterstorm
7.0%inclusion19 decks271 decks
0%synergy
Dispel
6.6%inclusion18 decks271 decks
2%synergy
Veil of Summer
6.3%inclusion17 decks271 decks
0%synergy
Eureka Moment
6.3%inclusion17 decks271 decks
-5%synergy
Tyvar's Stand
6.3%inclusion17 decks271 decks
3%synergy
Legolas's Quick Reflexes
6.3%inclusion17 decks271 decks
4%synergy
Collective Resistance
5.9%inclusion16 decks270 decks
2%synergy
Disallow
5.9%inclusion16 decks271 decks
4%synergy
Decisive Denial
5.2%inclusion14 decks271 decks
0%synergy
Sublime Epiphany
5.2%inclusion14 decks271 decks
3%synergy
Entish Restoration
5.2%inclusion14 decks271 decks
-4%synergy
Mystic Confluence
5.2%inclusion14 decks271 decks
2%synergy
Sorceries
Farseek
53%inclusion144 decks271 decks
29%synergy
Irenicus's Vile Duplication
48%inclusion131 decks271 decks
42%synergy
Skyshroud Claim
42%inclusion114 decks271 decks
33%synergy
Finale of Devastation
27%inclusion74 decks271 decks
16%synergy
Quantum Misalignment
23%inclusion61 decks271 decks
20%synergy
Overwhelming Stampede
19%inclusion52 decks271 decks
7%synergy
Triumph of the Hordes
19%inclusion51 decks271 decks
16%synergy
Bala Ged Recovery
17%inclusion46 decks271 decks
7%synergy
Explore
16%inclusion43 decks271 decks
-4%synergy
Sea Gate Restoration
14%inclusion39 decks271 decks
9%synergy
Green Sun's Zenith
14%inclusion38 decks271 decks
5%synergy
Rite of Replication
13%inclusion36 decks271 decks
6%synergy
Migration Path
11%inclusion29 decks271 decks
7%synergy
Distant Melody
9.2%inclusion25 decks271 decks
6%synergy
Shamanic Revelation
8.9%inclusion24 decks271 decks
3%synergy
Ponder
8.1%inclusion22 decks271 decks
1%synergy
Windfall
8.1%inclusion22 decks271 decks
4%synergy
Rishkar's Expertise
8.1%inclusion22 decks271 decks
0%synergy
Explosive Vegetation
8.1%inclusion22 decks271 decks
2%synergy
Bridgeworks Battle
7.0%inclusion19 decks270 decks
2%synergy
Regrowth
7.0%inclusion19 decks271 decks
3%synergy
Raise the Palisade
6.6%inclusion18 decks271 decks
0%synergy
Flare of Cultivation
6.3%inclusion17 decks270 decks
4%synergy
Urban Evolution
6.3%inclusion17 decks271 decks
-3%synergy
Expropriate
5.9%inclusion16 decks271 decks
4%synergy
Time Warp
5.9%inclusion16 decks271 decks
4%synergy
Natural Order
5.9%inclusion16 decks271 decks
5%synergy
Curse of the Swine
5.5%inclusion15 decks271 decks
-5%synergy
Harmonize
5.5%inclusion15 decks271 decks
0%synergy
Last March of the Ents
5.2%inclusion14 decks271 decks
1%synergy
Doppelgang
5.2%inclusion14 decks271 decks
-1%synergy
Utility Artifacts
Lightning Greaves
49%inclusion134 decks271 decks
28%synergy
Helm of the Host
42%inclusion113 decks271 decks
36%synergy
Swiftfoot Boots
41%inclusion112 decks271 decks
16%synergy
The One Ring
20%inclusion55 decks271 decks
13%synergy
Combine Chrysalis
18%inclusion48 decks271 decks
13%synergy
The Great Henge
15%inclusion40 decks271 decks
6%synergy
Emerald Medallion
13%inclusion36 decks271 decks
10%synergy
Mirror Box
13%inclusion35 decks271 decks
9%synergy
Sapphire Medallion
11%inclusion31 decks271 decks
8%synergy
Eldrazi Monument
10%inclusion27 decks271 decks
9%synergy
Banner of Kinship
7.5%inclusion20 decks266 decks
6%synergy
Coat of Arms
7.0%inclusion19 decks271 decks
6%synergy
Skullclamp
7.0%inclusion19 decks271 decks
6%synergy
Idol of Oblivion
7.0%inclusion19 decks271 decks
4%synergy
Winter Orb
5.2%inclusion14 decks271 decks
5%synergy
Enchantments
Tribute to the World Tree
51%inclusion137 decks271 decks
44%synergy
Mystic Remora
48%inclusion131 decks271 decks
33%synergy
Kindred Discovery
35%inclusion96 decks271 decks
25%synergy
Sylvan Library
33%inclusion90 decks271 decks
24%synergy
Growing Rites of Itlimoc
24%inclusion65 decks271 decks
18%synergy
Cryptolith Rite
20%inclusion55 decks271 decks
17%synergy
Exploration
20%inclusion55 decks271 decks
7%synergy
Primal Vigor
17%inclusion46 decks271 decks
14%synergy
Wild Growth
17%inclusion45 decks271 decks
8%synergy
Utopia Sprawl
15%inclusion42 decks271 decks
9%synergy
Defense of the Heart
14%inclusion38 decks271 decks
12%synergy
Beastmaster Ascension
12%inclusion33 decks271 decks
9%synergy
Unnatural Growth
11%inclusion31 decks271 decks
8%synergy
Carpet of Flowers
11%inclusion30 decks271 decks
8%synergy
Garruk's Uprising
11%inclusion30 decks271 decks
-5%synergy
Burgeoning
11%inclusion30 decks271 decks
4%synergy
Paradox Haze
10%inclusion27 decks271 decks
10%synergy
Propaganda
10%inclusion26 decks271 decks
3%synergy
Kenrith's Transformation
8.5%inclusion23 decks271 decks
4%synergy
Imprisoned in the Moon
8.1%inclusion22 decks271 decks
4%synergy
Asceticism
7.0%inclusion19 decks271 decks
4%synergy
Moonlit Meditation
6.2%inclusion8 decks129 decks
5%synergy
Omniscience
5.9%inclusion16 decks271 decks
1%synergy
Dismiss into Dream
5.9%inclusion16 decks271 decks
6%synergy
Opposition
5.9%inclusion16 decks271 decks
6%synergy
Wilderness Reclamation
5.9%inclusion16 decks271 decks
-3%synergy
Extravagant Replication
5.2%inclusion14 decks271 decks
3%synergy
Planeswalkers
Oko, Thief of Crowns
37%inclusion100 decks271 decks
30%synergy
Utility Lands
Reliquary Tower
62%inclusion168 decks271 decks
12%synergy
Boseiju, Who Endures
47%inclusion127 decks271 decks
25%synergy
Otawara, Soaring City
37%inclusion99 decks271 decks
18%synergy
Yavimaya, Cradle of Growth
36%inclusion97 decks271 decks
14%synergy
Command Beacon
25%inclusion67 decks271 decks
21%synergy
Three Tree City
22%inclusion60 decks270 decks
17%synergy
Gaea's Cradle
20%inclusion55 decks271 decks
13%synergy
Mistrise Village
17%inclusion38 decks227 decks
6%synergy
Mystic Sanctuary
16%inclusion44 decks271 decks
4%synergy
Castle Garenbrig
16%inclusion43 decks271 decks
11%synergy
Temple of the False God
15%inclusion42 decks271 decks
0%synergy
Evendo, Waking Haven
14%inclusion19 decks132 decks
9%synergy
Rogue's Passage
14%inclusion39 decks271 decks
-7%synergy
Mosswort Bridge
14%inclusion38 decks271 decks
-3%synergy
Alchemist's Refuge
13%inclusion36 decks271 decks
-4%synergy
Shifting Woodland
7.8%inclusion21 decks270 decks
1%synergy
Minamo, School at Water's Edge
7.4%inclusion20 decks271 decks
1%synergy
Urza's Saga
7.4%inclusion20 decks271 decks
2%synergy
Castle Vantress
5.9%inclusion16 decks271 decks
-1%synergy
Restless Vinestalk
5.5%inclusion15 decks271 decks
0%synergy
Field of the Dead
5.5%inclusion15 decks271 decks
-1%synergy
Scavenger Grounds
5.5%inclusion15 decks271 decks
1%synergy
Mana Artifacts
Sol Ring
96%inclusion260 decks271 decks
15%synergy
Arcane Signet
86%inclusion232 decks271 decks
23%synergy
Thought Vessel
44%inclusion119 decks271 decks
24%synergy
Talisman of Curiosity
38%inclusion104 decks271 decks
17%synergy
Simic Signet
34%inclusion92 decks271 decks
2%synergy
Chrome Mox
16%inclusion44 decks271 decks
10%synergy
Fellwar Stone
12%inclusion33 decks271 decks
3%synergy
Lotus Petal
11%inclusion29 decks271 decks
4%synergy
Thran Dynamo
7.4%inclusion20 decks271 decks
5%synergy
Mox Diamond
7.4%inclusion20 decks271 decks
2%synergy
Basalt Monolith
6.3%inclusion17 decks271 decks
-1%synergy
Commander's Sphere
5.5%inclusion15 decks271 decks
-3%synergy
Lands
Command Tower
93%inclusion252 decks271 decks
8%synergy
Forest
93%inclusion252 decks271 decks
-2%synergy
Island
93%inclusion251 decks271 decks
-3%synergy
Breeding Pool
79%inclusion213 decks271 decks
33%synergy
Rejuvenating Springs
73%inclusion197 decks271 decks
29%synergy
Hinterland Harbor
72%inclusion195 decks271 decks
13%synergy
Yavimaya Coast
63%inclusion172 decks271 decks
11%synergy
Misty Rainforest
59%inclusion160 decks271 decks
28%synergy
Dreamroot Cascade
58%inclusion157 decks271 decks
16%synergy
Barkchannel Pathway
54%inclusion145 decks271 decks
33%synergy
Flooded Grove
47%inclusion128 decks271 decks
7%synergy
Simic Growth Chamber
42%inclusion114 decks271 decks
-6%synergy
Waterlogged Grove
33%inclusion90 decks271 decks
13%synergy
Vineglimmer Snarl
33%inclusion89 decks271 decks
-6%synergy
Hedge Maze
28%inclusion76 decks271 decks
9%synergy
Fabled Passage
28%inclusion75 decks271 decks
13%synergy
Tropical Island
28%inclusion75 decks271 decks
13%synergy
Temple of Mystery
27%inclusion72 decks271 decks
-12%synergy
Willowrush Verge
25%inclusion67 decks264 decks
9%synergy
Exotic Orchard
23%inclusion63 decks271 decks
-1%synergy
Prismatic Vista
19%inclusion52 decks271 decks
12%synergy
Sink into Stupor
19%inclusion50 decks270 decks
7%synergy
Myriad Landscape
18%inclusion49 decks271 decks
-4%synergy
Flooded Strand
18%inclusion48 decks271 decks
7%synergy
Botanical Sanctum
17%inclusion47 decks271 decks
5%synergy
Bala Ged Recovery
17%inclusion46 decks271 decks
7%synergy
Windswept Heath
16%inclusion43 decks271 decks
5%synergy
Rimewood Falls
16%inclusion43 decks271 decks
7%synergy
Scalding Tarn
15%inclusion41 decks271 decks
5%synergy
Verdant Catacombs
15%inclusion40 decks271 decks
5%synergy
Sea Gate Restoration
14%inclusion39 decks271 decks
9%synergy
Polluted Delta
14%inclusion38 decks271 decks
4%synergy
Snow-Covered Forest
13%inclusion36 decks271 decks
6%synergy
Evolving Wilds
13%inclusion36 decks271 decks
-12%synergy
Snow-Covered Island
13%inclusion35 decks271 decks
6%synergy
Wooded Foothills
13%inclusion34 decks271 decks
3%synergy
Thornwood Falls
12%inclusion33 decks271 decks
-6%synergy
Overflowing Basin
12%inclusion32 decks270 decks
-7%synergy
Tangled Islet
12%inclusion32 decks271 decks
-5%synergy
Mana Confluence
11%inclusion29 decks271 decks
5%synergy
City of Brass
11%inclusion29 decks271 decks
5%synergy
Reflecting Pool
11%inclusion29 decks271 decks
8%synergy
Terramorphic Expanse
10%inclusion28 decks271 decks
-10%synergy
Glasspool Mimic
10%inclusion26 decks271 decks
5%synergy
Path of Ancestry
8.9%inclusion24 decks271 decks
-8%synergy
Gemstone Caverns
7.7%inclusion21 decks271 decks
2%synergy
Hydroelectric Specimen
7.0%inclusion19 decks270 decks
1%synergy
Bridgeworks Battle
7.0%inclusion19 decks270 decks
2%synergy
Cavern of Souls
7.0%inclusion19 decks271 decks
1%synergy
Blighted Woodland
5.2%inclusion14 decks271 decks
-2%synergy
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