Koma, Cosmos Serpent (Commander) - Expensive

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #308
674decks
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%inclusion16 decks104 decks
10%synergy
Badgermole Cub
7.5%inclusion8 decks107 decks
2%synergy
Tam, Mindful First-Year
7.1%inclusion2 decks28 decks
6%synergy
Shared Roots
6.8%inclusion7 decks103 decks
3%synergy
Wan Shi Tong, Librarian
6.5%inclusion7 decks107 decks
1%synergy
High Synergy Cards
Parallel Lives
81%inclusion548 decks674 decks
75%synergy
Adrix and Nev, Twincasters
83%inclusion559 decks674 decks
74%synergy
Sakashima of a Thousand Faces
78%inclusion525 decks674 decks
73%synergy
Elemental Bond
78%inclusion524 decks674 decks
72%synergy
Mana Drain
82%inclusion550 decks674 decks
66%synergy
Spark Double
73%inclusion489 decks674 decks
63%synergy
Doubling Season
70%inclusion474 decks674 decks
61%synergy
Whelming Wave
68%inclusion459 decks674 decks
57%synergy
Serpent of Yawning Depths
57%inclusion385 decks674 decks
51%synergy
Craterhoof Behemoth
60%inclusion406 decks674 decks
51%synergy
Top Cards
Birds of Paradise
76%inclusion509 decks674 decks
48%synergy
Heroic Intervention
74%inclusion497 decks674 decks
43%synergy
Nature's Lore
69%inclusion465 decks674 decks
38%synergy
Three Visits
68%inclusion459 decks674 decks
45%synergy
Counterspell
68%inclusion457 decks674 decks
18%synergy
Cultivate
67%inclusion450 decks674 decks
20%synergy
Beast Within
62%inclusion416 decks674 decks
12%synergy
Koma, World-Eater
61%inclusion290 decks477 decks
48%synergy
Kodama's Reach
61%inclusion409 decks674 decks
25%synergy
Swan Song
59%inclusion399 decks674 decks
40%synergy
Game Changers
Gaea's Cradle
91%inclusion613 decks674 decks
84%synergy
Cyclonic Rift
84%inclusion565 decks674 decks
58%synergy
Rhystic Study
81%inclusion545 decks674 decks
59%synergy
Fierce Guardianship
75%inclusion506 decks674 decks
58%synergy
Ancient Tomb
59%inclusion397 decks674 decks
50%synergy
Force of Will
54%inclusion361 decks674 decks
43%synergy
Worldly Tutor
53%inclusion354 decks674 decks
37%synergy
Seedborn Muse
44%inclusion299 decks674 decks
29%synergy
Consecrated Sphinx
44%inclusion295 decks674 decks
35%synergy
Mystical Tutor
40%inclusion267 decks674 decks
30%synergy
Creatures
Llanowar Elves
54%inclusion361 decks674 decks
26%synergy
Aesi, Tyrant of Gyre Strait
53%inclusion358 decks674 decks
36%synergy
Sakashima the Impostor
53%inclusion358 decks674 decks
51%synergy
Junk Winder
53%inclusion354 decks674 decks
46%synergy
Roaming Throne
50%inclusion337 decks674 decks
42%synergy
Spawning Kraken
49%inclusion331 decks674 decks
42%synergy
Elvish Mystic
43%inclusion292 decks674 decks
19%synergy
Fyndhorn Elves
38%inclusion258 decks674 decks
23%synergy
Enduring Vitality
36%inclusion192 decks530 decks
29%synergy
Delighted Halfling
33%inclusion223 decks674 decks
21%synergy
Ohran Frostfang
31%inclusion209 decks674 decks
27%synergy
Arixmethes, Slumbering Isle
30%inclusion205 decks674 decks
17%synergy
Eternal Witness
30%inclusion203 decks674 decks
9%synergy
Hullbreaker Horror
30%inclusion203 decks674 decks
12%synergy
Fanatic of Rhonas
28%inclusion163 decks590 decks
22%synergy
Sakura-Tribe Elder
27%inclusion185 decks674 decks
8%synergy
Murkfiend Liege
27%inclusion179 decks674 decks
12%synergy
Garruk's Packleader
25%inclusion170 decks674 decks
23%synergy
Summon: Leviathan
24%inclusion63 decks260 decks
17%synergy
Tatyova, Benthic Druid
24%inclusion159 decks674 decks
-7%synergy
Esix, Fractal Bloom
21%inclusion141 decks674 decks
17%synergy
Octomancer
18%inclusion99 decks552 decks
13%synergy
Archetype of Imagination
16%inclusion111 decks674 decks
12%synergy
Kinnan, Bonder Prodigy
16%inclusion106 decks674 decks
12%synergy
Azusa, Lost but Seeking
16%inclusion105 decks674 decks
2%synergy
Toski, Bearer of Secrets
15%inclusion99 decks674 decks
11%synergy
Scute Swarm
14%inclusion95 decks674 decks
-7%synergy
Phyrexian Metamorph
14%inclusion94 decks674 decks
5%synergy
Slinn Voda, the Rising Deep
14%inclusion93 decks674 decks
7%synergy
Enduring Curiosity
13%inclusion71 decks534 decks
10%synergy
Circle of Dreams Druid
13%inclusion89 decks674 decks
11%synergy
Curiosity Crafter
12%inclusion84 decks674 decks
9%synergy
Avenger of Zendikar
12%inclusion80 decks674 decks
-6%synergy
Nezahal, Primal Tide
12%inclusion80 decks674 decks
1%synergy
Uro, Titan of Nature's Wrath
11%inclusion77 decks674 decks
2%synergy
Chameleon, Master of Disguise
11%inclusion18 decks158 decks
9%synergy
Clever Impersonator
11%inclusion76 decks674 decks
6%synergy
Saryth, the Viper's Fang
11%inclusion75 decks674 decks
9%synergy
Auton Soldier
11%inclusion71 decks674 decks
8%synergy
Lotus Cobra
10%inclusion69 decks674 decks
-4%synergy
Bloom Tender
10%inclusion67 decks674 decks
5%synergy
Jaheira, Friend of the Forest
9.5%inclusion64 decks674 decks
6%synergy
Glasspool Mimic
9.3%inclusion63 decks674 decks
5%synergy
Arbor Elf
9.1%inclusion61 decks674 decks
3%synergy
Reclamation Sage
9.1%inclusion61 decks674 decks
-5%synergy
Selvala, Heart of the Wilds
8.9%inclusion60 decks674 decks
6%synergy
Coiling Oracle
8.8%inclusion59 decks674 decks
-4%synergy
Nyxbloom Ancient
8.5%inclusion57 decks674 decks
1%synergy
Starwinder
8.2%inclusion16 decks194 decks
2%synergy
Progenitor Mimic
8.2%inclusion55 decks674 decks
4%synergy
Instants
Pongify
46%inclusion308 decks674 decks
21%synergy
An Offer You Can't Refuse
45%inclusion301 decks674 decks
21%synergy
Double Major
43%inclusion288 decks674 decks
34%synergy
Force of Negation
42%inclusion286 decks674 decks
34%synergy
Growth Spiral
39%inclusion264 decks674 decks
-5%synergy
Second Harvest
33%inclusion223 decks674 decks
27%synergy
Rapid Hybridization
31%inclusion209 decks674 decks
5%synergy
Arcane Denial
30%inclusion200 decks674 decks
7%synergy
Negate
28%inclusion187 decks674 decks
2%synergy
Pact of Negation
25%inclusion169 decks674 decks
18%synergy
Return of the Wildspeaker
23%inclusion152 decks674 decks
12%synergy
Chord of Calling
21%inclusion140 decks674 decks
13%synergy
Sink into Stupor
19%inclusion113 decks594 decks
7%synergy
Force of Vigor
18%inclusion122 decks674 decks
13%synergy
Krosan Grip
18%inclusion121 decks674 decks
10%synergy
Nature's Claim
18%inclusion118 decks674 decks
8%synergy
Crop Rotation
17%inclusion115 decks674 decks
4%synergy
Archdruid's Charm
15%inclusion102 decks674 decks
9%synergy
Noxious Revival
15%inclusion101 decks674 decks
9%synergy
Brainstorm
15%inclusion99 decks674 decks
0%synergy
Flusterstorm
14%inclusion97 decks674 decks
8%synergy
Reality Shift
14%inclusion91 decks674 decks
-1%synergy
Disallow
11%inclusion72 decks674 decks
9%synergy
Tamiyo's Safekeeping
10%inclusion70 decks674 decks
5%synergy
Voidslime
10%inclusion70 decks674 decks
5%synergy
Strix Serenade
10%inclusion59 decks594 decks
6%synergy
Mystic Reflection
10%inclusion65 decks674 decks
7%synergy
Veil of Summer
8.8%inclusion59 decks674 decks
3%synergy
Simic Charm
8.3%inclusion56 decks674 decks
0%synergy
Mental Misstep
8.0%inclusion54 decks674 decks
2%synergy
Mindbreak Trap
7.9%inclusion53 decks674 decks
3%synergy
Resculpt
7.4%inclusion50 decks674 decks
1%synergy
Legolas's Quick Reflexes
7.1%inclusion48 decks674 decks
5%synergy
Harrow
6.8%inclusion46 decks674 decks
-5%synergy
Stubborn Denial
6.5%inclusion44 decks674 decks
4%synergy
Aetherize
6.5%inclusion44 decks674 decks
-5%synergy
Planar Genesis
6.3%inclusion37 decks587 decks
-5%synergy
Narset's Reversal
6.1%inclusion41 decks674 decks
4%synergy
Entish Restoration
5.9%inclusion40 decks674 decks
-3%synergy
Dispel
5.8%inclusion39 decks674 decks
1%synergy
Sublime Epiphany
5.6%inclusion38 decks674 decks
4%synergy
Plasm Capture
5.5%inclusion37 decks674 decks
2%synergy
Muddle the Mixture
5.5%inclusion37 decks674 decks
1%synergy
Sorceries
Irenicus's Vile Duplication
56%inclusion380 decks674 decks
50%synergy
Rampant Growth
53%inclusion355 decks674 decks
12%synergy
Farseek
51%inclusion346 decks674 decks
26%synergy
Skyshroud Claim
39%inclusion266 decks674 decks
30%synergy
Finale of Devastation
39%inclusion265 decks674 decks
27%synergy
Quantum Misalignment
32%inclusion215 decks674 decks
29%synergy
Triumph of the Hordes
22%inclusion151 decks674 decks
19%synergy
Green Sun's Zenith
20%inclusion132 decks674 decks
11%synergy
Overwhelming Stampede
18%inclusion124 decks674 decks
6%synergy
Sea Gate Restoration
17%inclusion116 decks674 decks
12%synergy
Explore
17%inclusion113 decks674 decks
-3%synergy
Rite of Replication
16%inclusion106 decks674 decks
8%synergy
Bala Ged Recovery
14%inclusion94 decks674 decks
4%synergy
Distant Melody
11%inclusion74 decks674 decks
8%synergy
Rishkar's Expertise
11%inclusion71 decks674 decks
2%synergy
Windfall
10%inclusion65 decks674 decks
6%synergy
Shamanic Revelation
9.2%inclusion62 decks674 decks
4%synergy
Ponder
8.5%inclusion57 decks674 decks
1%synergy
Fabricate
6.8%inclusion46 decks674 decks
0%synergy
Doppelgang
6.7%inclusion45 decks674 decks
0%synergy
Natural Order
6.7%inclusion45 decks674 decks
5%synergy
Explosive Vegetation
6.4%inclusion43 decks674 decks
1%synergy
Migration Path
6.4%inclusion43 decks674 decks
3%synergy
Regrowth
6.2%inclusion42 decks674 decks
3%synergy
Expropriate
5.5%inclusion37 decks674 decks
4%synergy
Curse of the Swine
5.3%inclusion36 decks674 decks
-5%synergy
Raise the Palisade
5.3%inclusion36 decks674 decks
-1%synergy
Sylvan Tutor
5.3%inclusion36 decks674 decks
4%synergy
Turntimber Symbiosis
5.0%inclusion34 decks674 decks
3%synergy
Utility Artifacts
Lightning Greaves
50%inclusion338 decks674 decks
28%synergy
Helm of the Host
47%inclusion315 decks674 decks
41%synergy
Swiftfoot Boots
31%inclusion211 decks674 decks
6%synergy
The One Ring
30%inclusion204 decks674 decks
23%synergy
The Great Henge
28%inclusion188 decks674 decks
19%synergy
Combine Chrysalis
16%inclusion109 decks674 decks
12%synergy
Mirror Box
16%inclusion107 decks674 decks
12%synergy
Coat of Arms
14%inclusion93 decks674 decks
12%synergy
Eldrazi Monument
12%inclusion83 decks674 decks
12%synergy
Emerald Medallion
11%inclusion75 decks674 decks
8%synergy
Sapphire Medallion
10%inclusion65 decks674 decks
6%synergy
Skullclamp
8.8%inclusion59 decks674 decks
8%synergy
Winter Orb
8.0%inclusion54 decks674 decks
8%synergy
Static Orb
6.1%inclusion41 decks674 decks
6%synergy
Bident of Thassa
5.6%inclusion38 decks674 decks
-2%synergy
Enchantments
Tribute to the World Tree
55%inclusion374 decks674 decks
49%synergy
Mystic Remora
46%inclusion313 decks674 decks
31%synergy
Sylvan Library
39%inclusion266 decks674 decks
30%synergy
Kindred Discovery
34%inclusion231 decks674 decks
25%synergy
Exploration
25%inclusion167 decks674 decks
12%synergy
Cryptolith Rite
22%inclusion151 decks674 decks
19%synergy
Growing Rites of Itlimoc
20%inclusion133 decks674 decks
14%synergy
Burgeoning
19%inclusion128 decks674 decks
12%synergy
Primal Vigor
18%inclusion119 decks674 decks
15%synergy
Wild Growth
16%inclusion110 decks674 decks
8%synergy
Utopia Sprawl
16%inclusion105 decks674 decks
9%synergy
Beastmaster Ascension
15%inclusion100 decks674 decks
12%synergy
Defense of the Heart
15%inclusion100 decks674 decks
13%synergy
Paradox Haze
14%inclusion94 decks674 decks
14%synergy
Carpet of Flowers
13%inclusion85 decks674 decks
10%synergy
Garruk's Uprising
8.5%inclusion57 decks674 decks
-8%synergy
Unnatural Growth
8.2%inclusion55 decks674 decks
5%synergy
Moonlit Meditation
7.6%inclusion15 decks197 decks
6%synergy
Impostor Syndrome
7.5%inclusion12 decks160 decks
6%synergy
Extravagant Replication
7.3%inclusion49 decks674 decks
5%synergy
Opposition
7.0%inclusion47 decks674 decks
7%synergy
Propaganda
7.0%inclusion47 decks674 decks
0%synergy
Kenrith's Transformation
6.7%inclusion45 decks674 decks
2%synergy
Dismiss into Dream
6.4%inclusion43 decks674 decks
6%synergy
Asceticism
6.1%inclusion41 decks674 decks
3%synergy
Imprisoned in the Moon
5.9%inclusion40 decks674 decks
2%synergy
Battles
Invasion of Ikoria
7.1%inclusion48 decks674 decks
3%synergy
Planeswalkers
Oko, Thief of Crowns
34%inclusion231 decks674 decks
27%synergy
Utility Lands
Boseiju, Who Endures
67%inclusion452 decks674 decks
45%synergy
Reliquary Tower
64%inclusion432 decks674 decks
14%synergy
Yavimaya, Cradle of Growth
60%inclusion406 decks674 decks
38%synergy
Otawara, Soaring City
56%inclusion378 decks674 decks
37%synergy
Three Tree City
37%inclusion208 decks558 decks
32%synergy
Command Beacon
31%inclusion212 decks674 decks
27%synergy
Mistrise Village
29%inclusion96 decks331 decks
18%synergy
Evendo, Waking Haven
25%inclusion49 decks200 decks
19%synergy
Castle Garenbrig
20%inclusion134 decks674 decks
15%synergy
Urza's Saga
17%inclusion115 decks674 decks
11%synergy
Alchemist's Refuge
17%inclusion114 decks674 decks
0%synergy
Mystic Sanctuary
16%inclusion109 decks674 decks
4%synergy
Minamo, School at Water's Edge
13%inclusion89 decks674 decks
7%synergy
Mosswort Bridge
12%inclusion78 decks674 decks
-6%synergy
Temple of the False God
11%inclusion76 decks674 decks
-4%synergy
Nykthos, Shrine to Nyx
10%inclusion70 decks674 decks
8%synergy
Rogue's Passage
10%inclusion68 decks674 decks
-12%synergy
Strip Mine
8.5%inclusion57 decks674 decks
6%synergy
Shifting Woodland
7.6%inclusion45 decks592 decks
1%synergy
Field of the Dead
7.4%inclusion50 decks674 decks
1%synergy
Dryad Arbor
7.3%inclusion49 decks674 decks
1%synergy
Wasteland
5.2%inclusion35 decks674 decks
4%synergy
Homeward Path
5.0%inclusion34 decks674 decks
3%synergy
Mana Artifacts
Sol Ring
96%inclusion647 decks674 decks
15%synergy
Arcane Signet
82%inclusion551 decks674 decks
19%synergy
Talisman of Curiosity
38%inclusion259 decks674 decks
17%synergy
Simic Signet
37%inclusion247 decks674 decks
5%synergy
Mana Vault
34%inclusion231 decks674 decks
28%synergy
Thought Vessel
34%inclusion228 decks674 decks
13%synergy
Chrome Mox
23%inclusion152 decks674 decks
16%synergy
Mox Diamond
17%inclusion115 decks674 decks
12%synergy
Lotus Petal
15%inclusion101 decks674 decks
8%synergy
Fellwar Stone
15%inclusion100 decks674 decks
5%synergy
Mana Crypt
14%inclusion94 decks674 decks
11%synergy
Jeweled Lotus
14%inclusion92 decks674 decks
12%synergy
Grim Monolith
11%inclusion72 decks674 decks
8%synergy
Mox Opal
10%inclusion66 decks674 decks
5%synergy
Basalt Monolith
8.2%inclusion55 decks674 decks
1%synergy
Decanter of Endless Water
5.9%inclusion40 decks674 decks
1%synergy
Patchwork Banner
5.8%inclusion32 decks554 decks
2%synergy
Thran Dynamo
5.5%inclusion37 decks674 decks
3%synergy
Lands
Command Tower
93%inclusion624 decks674 decks
7%synergy
Forest
91%inclusion615 decks674 decks
-4%synergy
Island
91%inclusion612 decks674 decks
-5%synergy
Breeding Pool
90%inclusion609 decks674 decks
44%synergy
Rejuvenating Springs
80%inclusion541 decks674 decks
36%synergy
Misty Rainforest
78%inclusion528 decks674 decks
47%synergy
Tropical Island
77%inclusion520 decks674 decks
63%synergy
Hinterland Harbor
63%inclusion422 decks674 decks
3%synergy
Yavimaya Coast
55%inclusion371 decks674 decks
2%synergy
Dreamroot Cascade
50%inclusion335 decks674 decks
7%synergy
Barkchannel Pathway
46%inclusion311 decks674 decks
26%synergy
Flooded Grove
40%inclusion268 decks674 decks
-1%synergy
Waterlogged Grove
35%inclusion236 decks674 decks
14%synergy
Simic Growth Chamber
32%inclusion213 decks674 decks
-17%synergy
Hedge Maze
32%inclusion213 decks674 decks
12%synergy
Flooded Strand
30%inclusion200 decks674 decks
18%synergy
Windswept Heath
29%inclusion197 decks674 decks
19%synergy
Verdant Catacombs
29%inclusion196 decks674 decks
19%synergy
Prismatic Vista
29%inclusion195 decks674 decks
22%synergy
Willowrush Verge
29%inclusion112 decks390 decks
12%synergy
Polluted Delta
27%inclusion185 decks674 decks
17%synergy
Scalding Tarn
27%inclusion179 decks674 decks
17%synergy
Wooded Foothills
24%inclusion164 decks674 decks
15%synergy
Exotic Orchard
21%inclusion139 decks674 decks
-3%synergy
Fabled Passage
20%inclusion137 decks674 decks
6%synergy
Vineglimmer Snarl
19%inclusion130 decks674 decks
-19%synergy
Sink into Stupor
19%inclusion113 decks594 decks
7%synergy
Mana Confluence
18%inclusion118 decks674 decks
12%synergy
Sea Gate Restoration
17%inclusion116 decks674 decks
12%synergy
Temple of Mystery
17%inclusion115 decks674 decks
-21%synergy
City of Brass
15%inclusion102 decks674 decks
9%synergy
Snow-Covered Island
15%inclusion98 decks674 decks
8%synergy
Snow-Covered Forest
14%inclusion96 decks674 decks
8%synergy
Bala Ged Recovery
14%inclusion94 decks674 decks
4%synergy
Gemstone Caverns
13%inclusion90 decks674 decks
7%synergy
Myriad Landscape
13%inclusion85 decks674 decks
-9%synergy
Botanical Sanctum
11%inclusion72 decks674 decks
-2%synergy
Reflecting Pool
10%inclusion69 decks674 decks
7%synergy
Cavern of Souls
10%inclusion67 decks674 decks
4%synergy
Rimewood Falls
10%inclusion66 decks674 decks
1%synergy
Glasspool Mimic
9.3%inclusion63 decks674 decks
5%synergy
Tangled Islet
8.6%inclusion58 decks674 decks
-8%synergy
Overflowing Basin
8.6%inclusion56 decks653 decks
-11%synergy
Evolving Wilds
6.8%inclusion46 decks674 decks
-18%synergy
Thornwood Falls
5.8%inclusion39 decks674 decks
-12%synergy
Turntimber Symbiosis
5.0%inclusion34 decks674 decks
3%synergy
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