Koma, Cosmos Serpent (Commander)

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #298
6,731decks
As CommanderAs CardAverage DeckDecks
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Budget
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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%inclusion96 decks708 decks
9%synergy
Shared Roots
8.1%inclusion55 decks680 decks
5%synergy
Ember Island Production
3.2%inclusion21 decks659 decks
3%synergy
Badgermole Cub
3.0%inclusion22 decks740 decks
-2%synergy
Wan Shi Tong, Librarian
2.3%inclusion17 decks740 decks
-3%synergy
High Synergy Cards
Adrix and Nev, Twincasters
76%inclusion5.12K decks6.73K decks
68%synergy
Elemental Bond
68%inclusion4.54K decks6.73K decks
62%synergy
Whelming Wave
73%inclusion4.92K decks6.73K decks
62%synergy
Spark Double
63%inclusion4.27K decks6.73K decks
54%synergy
Koma, World-Eater
65%inclusion3.04K decks4.68K decks
52%synergy
Junk Winder
57%inclusion3.86K decks6.73K decks
51%synergy
Parallel Lives
55%inclusion3.67K decks6.73K decks
49%synergy
Serpent of Yawning Depths
55%inclusion3.67K decks6.73K decks
48%synergy
Irenicus's Vile Duplication
53%inclusion3.56K decks6.73K decks
47%synergy
Sakashima of a Thousand Faces
50%inclusion3.33K decks6.73K decks
44%synergy
Top Cards
Cultivate
78%inclusion5.25K decks6.73K decks
31%synergy
Counterspell
74%inclusion4.96K decks6.73K decks
24%synergy
Kodama's Reach
70%inclusion4.74K decks6.73K decks
34%synergy
Rampant Growth
69%inclusion4.64K decks6.73K decks
28%synergy
Beast Within
61%inclusion4.12K decks6.73K decks
11%synergy
Nature's Lore
58%inclusion3.91K decks6.73K decks
28%synergy
Growth Spiral
56%inclusion3.80K decks6.73K decks
12%synergy
Heroic Intervention
54%inclusion3.61K decks6.73K decks
23%synergy
Farseek
54%inclusion3.60K decks6.73K decks
29%synergy
Aesi, Tyrant of Gyre Strait
53%inclusion3.54K decks6.73K decks
35%synergy
Game Changers
Cyclonic Rift
44%inclusion2.96K decks6.73K decks
18%synergy
Rhystic Study
40%inclusion2.69K decks6.73K decks
18%synergy
Fierce Guardianship
32%inclusion2.18K decks6.73K decks
15%synergy
Seedborn Muse
29%inclusion1.94K decks6.73K decks
13%synergy
Worldly Tutor
22%inclusion1.51K decks6.73K decks
7%synergy
Consecrated Sphinx
20%inclusion1.35K decks6.73K decks
11%synergy
Mystical Tutor
16%inclusion1.11K decks6.73K decks
7%synergy
Force of Will
14%inclusion937 decks6.73K decks
4%synergy
Ancient Tomb
13%inclusion867 decks6.73K decks
4%synergy
Gaea's Cradle
10%inclusion675 decks6.73K decks
3%synergy
Creatures
Llanowar Elves
49%inclusion3.27K decks6.73K decks
21%synergy
Spawning Kraken
47%inclusion3.20K decks6.73K decks
40%synergy
Birds of Paradise
46%inclusion3.08K decks6.73K decks
18%synergy
Arixmethes, Slumbering Isle
42%inclusion2.86K decks6.73K decks
29%synergy
Sakura-Tribe Elder
40%inclusion2.66K decks6.73K decks
20%synergy
Sakashima the Impostor
38%inclusion2.59K decks6.73K decks
36%synergy
Elvish Mystic
38%inclusion2.57K decks6.73K decks
14%synergy
Tatyova, Benthic Druid
38%inclusion2.53K decks6.73K decks
6%synergy
Murkfiend Liege
36%inclusion2.41K decks6.73K decks
21%synergy
Garruk's Packleader
33%inclusion2.21K decks6.73K decks
30%synergy
Craterhoof Behemoth
32%inclusion2.14K decks6.73K decks
22%synergy
Hullbreaker Horror
30%inclusion2.04K decks6.73K decks
13%synergy
Ohran Frostfang
29%inclusion1.97K decks6.73K decks
26%synergy
Eternal Witness
29%inclusion1.96K decks6.73K decks
8%synergy
Roaming Throne
28%inclusion1.89K decks6.73K decks
20%synergy
Summon: Leviathan
28%inclusion707 decks2.52K decks
21%synergy
Fyndhorn Elves
28%inclusion1.88K decks6.73K decks
12%synergy
Slinn Voda, the Rising Deep
25%inclusion1.70K decks6.73K decks
19%synergy
Octomancer
25%inclusion1.35K decks5.43K decks
20%synergy
Enduring Vitality
25%inclusion1.28K decks5.13K decks
17%synergy
Esix, Fractal Bloom
24%inclusion1.62K decks6.73K decks
20%synergy
Archetype of Imagination
22%inclusion1.51K decks6.73K decks
18%synergy
Coiling Oracle
21%inclusion1.38K decks6.73K decks
7%synergy
Fanatic of Rhonas
20%inclusion1.13K decks5.74K decks
14%synergy
Scourge of Fleets
16%inclusion1.09K decks6.73K decks
8%synergy
Xolatoyac, the Smiling Flood
15%inclusion992 decks6.73K decks
7%synergy
Curiosity Crafter
15%inclusion988 decks6.73K decks
11%synergy
Nezahal, Primal Tide
15%inclusion979 decks6.73K decks
4%synergy
Reclamation Sage
15%inclusion978 decks6.73K decks
0%synergy
Scute Swarm
14%inclusion966 decks6.73K decks
-7%synergy
Delighted Halfling
14%inclusion912 decks6.73K decks
2%synergy
Enduring Curiosity
13%inclusion693 decks5.19K decks
10%synergy
Nadir Kraken
13%inclusion899 decks6.73K decks
9%synergy
Starwinder
13%inclusion248 decks1.86K decks
7%synergy
Chameleon, Master of Disguise
13%inclusion172 decks1.34K decks
10%synergy
Toski, Bearer of Secrets
13%inclusion861 decks6.73K decks
9%synergy
Avenger of Zendikar
13%inclusion860 decks6.73K decks
-5%synergy
Azusa, Lost but Seeking
12%inclusion821 decks6.73K decks
-2%synergy
Troyan, Gutsy Explorer
12%inclusion810 decks6.73K decks
9%synergy
Stormtide Leviathan
12%inclusion793 decks6.73K decks
6%synergy
Saryth, the Viper's Fang
11%inclusion761 decks6.73K decks
10%synergy
Rampaging Baloths
11%inclusion754 decks6.73K decks
-6%synergy
Progenitor Mimic
10%inclusion673 decks6.73K decks
5%synergy
Lotus Cobra
10%inclusion670 decks6.73K decks
-4%synergy
Uro, Titan of Nature's Wrath
10%inclusion666 decks6.73K decks
0%synergy
Circle of Dreams Druid
10%inclusion663 decks6.73K decks
8%synergy
Inga and Esika
9.5%inclusion639 decks6.73K decks
7%synergy
Jaheira, Friend of the Forest
9.5%inclusion637 decks6.73K decks
6%synergy
Clever Impersonator
9.3%inclusion627 decks6.73K decks
5%synergy
Kiora, Sovereign of the Deep
9.2%inclusion618 decks6.73K decks
7%synergy
Instants
Negate
47%inclusion3.16K decks6.73K decks
21%synergy
Double Major
47%inclusion3.15K decks6.73K decks
38%synergy
Pongify
39%inclusion2.66K decks6.73K decks
15%synergy
Second Harvest
37%inclusion2.50K decks6.73K decks
31%synergy
Arcane Denial
37%inclusion2.50K decks6.73K decks
15%synergy
An Offer You Can't Refuse
36%inclusion2.45K decks6.73K decks
13%synergy
Mana Drain
35%inclusion2.33K decks6.73K decks
19%synergy
Swan Song
32%inclusion2.14K decks6.73K decks
13%synergy
Return of the Wildspeaker
32%inclusion2.14K decks6.73K decks
21%synergy
Rapid Hybridization
31%inclusion2.06K decks6.73K decks
4%synergy
Krosan Grip
23%inclusion1.57K decks6.73K decks
15%synergy
Simic Charm
19%inclusion1.28K decks6.73K decks
11%synergy
Reality Shift
18%inclusion1.23K decks6.73K decks
4%synergy
Nature's Claim
17%inclusion1.12K decks6.73K decks
7%synergy
Brainstorm
16%inclusion1.07K decks6.73K decks
2%synergy
Planar Genesis
15%inclusion857 decks5.72K decks
4%synergy
Harrow
15%inclusion985 decks6.73K decks
3%synergy
Tamiyo's Safekeeping
13%inclusion876 decks6.73K decks
7%synergy
Voidslime
13%inclusion846 decks6.73K decks
7%synergy
Return to Nature
13%inclusion845 decks6.73K decks
7%synergy
Aetherize
12%inclusion819 decks6.73K decks
0%synergy
Eureka Moment
12%inclusion814 decks6.73K decks
1%synergy
Snakeskin Veil
12%inclusion781 decks6.73K decks
6%synergy
Sink into Stupor
11%inclusion646 decks5.75K decks
0%synergy
Plasm Capture
11%inclusion754 decks6.73K decks
8%synergy
Force of Negation
11%inclusion751 decks6.73K decks
3%synergy
Mystic Reflection
11%inclusion741 decks6.73K decks
8%synergy
Chord of Calling
10%inclusion686 decks6.73K decks
2%synergy
Pact of Negation
8.9%inclusion601 decks6.73K decks
2%synergy
Entish Restoration
8.4%inclusion567 decks6.73K decks
-1%synergy
Perplexing Test
8.0%inclusion540 decks6.73K decks
3%synergy
Archdruid's Charm
8.0%inclusion521 decks6.53K decks
2%synergy
Stubborn Denial
7.7%inclusion518 decks6.73K decks
5%synergy
Noxious Revival
7.7%inclusion516 decks6.73K decks
2%synergy
Resculpt
7.6%inclusion513 decks6.73K decks
2%synergy
Decisive Denial
7.6%inclusion511 decks6.73K decks
2%synergy
Disallow
7.5%inclusion508 decks6.73K decks
6%synergy
Sublime Epiphany
7.5%inclusion507 decks6.73K decks
5%synergy
Narset's Reversal
6.6%inclusion443 decks6.73K decks
5%synergy
Tyvar's Stand
6.5%inclusion439 decks6.73K decks
4%synergy
Strix Serenade
6.2%inclusion354 decks5.75K decks
2%synergy
Force of Vigor
5.7%inclusion383 decks6.73K decks
1%synergy
Lazotep Plating
5.6%inclusion376 decks6.73K decks
5%synergy
Collective Resistance
5.6%inclusion320 decks5.75K decks
2%synergy
Auroral Procession
5.5%inclusion170 decks3.10K decks
2%synergy
Joint Exploration
5.5%inclusion369 decks6.73K decks
0%synergy
Sorceries
Three Visits
48%inclusion3.26K decks6.73K decks
25%synergy
Skyshroud Claim
38%inclusion2.55K decks6.73K decks
29%synergy
Explore
28%inclusion1.87K decks6.73K decks
7%synergy
Quantum Misalignment
28%inclusion1.86K decks6.73K decks
25%synergy
Overwhelming Stampede
24%inclusion1.62K decks6.73K decks
12%synergy
Rite of Replication
17%inclusion1.16K decks6.73K decks
10%synergy
Shamanic Revelation
16%inclusion1.09K decks6.73K decks
11%synergy
Migration Path
15%inclusion1.01K decks6.73K decks
12%synergy
Urban Evolution
14%inclusion961 decks6.73K decks
5%synergy
Rishkar's Expertise
14%inclusion939 decks6.73K decks
6%synergy
Triumph of the Hordes
13%inclusion846 decks6.73K decks
10%synergy
Distant Melody
12%inclusion834 decks6.73K decks
9%synergy
Bala Ged Recovery
12%inclusion832 decks6.73K decks
2%synergy
Finale of Devastation
12%inclusion821 decks6.73K decks
0%synergy
Explosive Vegetation
12%inclusion795 decks6.73K decks
6%synergy
Harmonize
11%inclusion722 decks6.73K decks
5%synergy
Curse of the Swine
8.8%inclusion595 decks6.73K decks
-2%synergy
Search for Tomorrow
8.7%inclusion585 decks6.73K decks
4%synergy
Ponder
8.5%inclusion571 decks6.73K decks
1%synergy
Regrowth
7.6%inclusion512 decks6.73K decks
4%synergy
Doppelgang
7.2%inclusion473 decks6.54K decks
1%synergy
Ravenform
6.9%inclusion462 decks6.73K decks
2%synergy
Sea Gate Restoration
6.8%inclusion461 decks6.73K decks
1%synergy
Green Sun's Zenith
6.4%inclusion433 decks6.73K decks
-2%synergy
Preposterous Proportions
6.2%inclusion289 decks4.64K decks
5%synergy
Windfall
6.1%inclusion409 decks6.73K decks
2%synergy
Ezuri's Predation
6.0%inclusion402 decks6.73K decks
-2%synergy
Preordain
5.6%inclusion374 decks6.73K decks
-3%synergy
Broken Bond
5.3%inclusion354 decks6.73K decks
0%synergy
Quasiduplicate
5.2%inclusion353 decks6.73K decks
3%synergy
Flare of Cultivation
5.1%inclusion323 decks6.28K decks
3%synergy
Utility Artifacts
Swiftfoot Boots
45%inclusion3K decks6.73K decks
19%synergy
Helm of the Host
43%inclusion2.88K decks6.73K decks
37%synergy
Lightning Greaves
41%inclusion2.79K decks6.73K decks
20%synergy
Combine Chrysalis
26%inclusion1.73K decks6.73K decks
21%synergy
Mirror Box
18%inclusion1.19K decks6.73K decks
14%synergy
Emerald Medallion
13%inclusion891 decks6.73K decks
10%synergy
The Great Henge
12%inclusion788 decks6.73K decks
3%synergy
Idol of Oblivion
11%inclusion763 decks6.73K decks
8%synergy
Sapphire Medallion
10%inclusion700 decks6.73K decks
7%synergy
Eldrazi Monument
10%inclusion646 decks6.73K decks
9%synergy
Bident of Thassa
9.4%inclusion633 decks6.73K decks
2%synergy
Coat of Arms
7.5%inclusion507 decks6.73K decks
6%synergy
The One Ring
7.0%inclusion468 decks6.73K decks
-1%synergy
Banner of Kinship
5.7%inclusion266 decks4.67K decks
4%synergy
Skullclamp
5.1%inclusion342 decks6.73K decks
4%synergy
Enchantments
Doubling Season
49%inclusion3.30K decks6.73K decks
39%synergy
Tribute to the World Tree
44%inclusion2.96K decks6.73K decks
38%synergy
Kindred Discovery
31%inclusion2.09K decks6.73K decks
21%synergy
Mystic Remora
28%inclusion1.87K decks6.73K decks
12%synergy
Primal Vigor
18%inclusion1.23K decks6.73K decks
15%synergy
Garruk's Uprising
18%inclusion1.22K decks6.73K decks
2%synergy
Growing Rites of Itlimoc
18%inclusion1.19K decks6.73K decks
12%synergy
Wild Growth
15%inclusion1.03K decks6.73K decks
7%synergy
Sylvan Library
15%inclusion1.03K decks6.73K decks
6%synergy
Exploration
15%inclusion990 decks6.73K decks
1%synergy
Beastmaster Ascension
15%inclusion989 decks6.73K decks
12%synergy
Cryptolith Rite
15%inclusion984 decks6.73K decks
12%synergy
Utopia Sprawl
13%inclusion885 decks6.73K decks
7%synergy
Paradox Haze
12%inclusion832 decks6.73K decks
12%synergy
Propaganda
11%inclusion748 decks6.73K decks
4%synergy
Wilderness Reclamation
10%inclusion686 decks6.73K decks
1%synergy
Unnatural Growth
10%inclusion666 decks6.73K decks
7%synergy
Impostor Syndrome
9.3%inclusion126 decks1.35K decks
7%synergy
Defense of the Heart
9.0%inclusion605 decks6.73K decks
7%synergy
Moonlit Meditation
8.6%inclusion160 decks1.87K decks
7%synergy
Extravagant Replication
7.9%inclusion529 decks6.73K decks
5%synergy
Imprisoned in the Moon
7.7%inclusion518 decks6.73K decks
4%synergy
Burgeoning
7.7%inclusion517 decks6.73K decks
1%synergy
Kenrith's Transformation
7.2%inclusion483 decks6.73K decks
3%synergy
Asceticism
7.1%inclusion480 decks6.73K decks
4%synergy
Ominous Seas
6.8%inclusion456 decks6.73K decks
2%synergy
Verity Circle
5.7%inclusion383 decks6.73K decks
5%synergy
Dismiss into Dream
5.3%inclusion359 decks6.73K decks
5%synergy
Planeswalkers
Oko, Thief of Crowns
21%inclusion1.41K decks6.73K decks
14%synergy
Kiora, the Crashing Wave
8.0%inclusion537 decks6.73K decks
5%synergy
Utility Lands
Reliquary Tower
61%inclusion4.09K decks6.73K decks
11%synergy
Boseiju, Who Endures
25%inclusion1.70K decks6.73K decks
3%synergy
Yavimaya, Cradle of Growth
24%inclusion1.63K decks6.73K decks
2%synergy
Otawara, Soaring City
21%inclusion1.40K decks6.73K decks
2%synergy
Temple of the False God
20%inclusion1.33K decks6.73K decks
4%synergy
Command Beacon
18%inclusion1.23K decks6.73K decks
14%synergy
Mosswort Bridge
16%inclusion1.11K decks6.73K decks
-1%synergy
Three Tree City
16%inclusion882 decks5.48K decks
11%synergy
Rogue's Passage
15%inclusion1K decks6.73K decks
-7%synergy
Mystic Sanctuary
14%inclusion963 decks6.73K decks
2%synergy
Castle Garenbrig
13%inclusion875 decks6.73K decks
8%synergy
Mistrise Village
13%inclusion392 decks3.10K decks
2%synergy
Alchemist's Refuge
12%inclusion797 decks6.73K decks
-6%synergy
Evendo, Waking Haven
12%inclusion221 decks1.92K decks
6%synergy
Restless Vinestalk
5.8%inclusion389 decks6.73K decks
0%synergy
Castle Vantress
5.7%inclusion384 decks6.73K decks
-1%synergy
Lumbering Falls
5.2%inclusion347 decks6.73K decks
-2%synergy
Mana Artifacts
Sol Ring
92%inclusion6.17K decks6.73K decks
11%synergy
Arcane Signet
78%inclusion5.23K decks6.73K decks
15%synergy
Simic Signet
44%inclusion2.95K decks6.73K decks
12%synergy
Thought Vessel
39%inclusion2.62K decks6.73K decks
19%synergy
Talisman of Curiosity
33%inclusion2.24K decks6.73K decks
12%synergy
Commander's Sphere
11%inclusion774 decks6.73K decks
3%synergy
Fellwar Stone
11%inclusion752 decks6.73K decks
2%synergy
Decanter of Endless Water
7.4%inclusion495 decks6.73K decks
2%synergy
Mana Vault
7.0%inclusion469 decks6.73K decks
1%synergy
Thran Dynamo
6.9%inclusion467 decks6.73K decks
4%synergy
Mind Stone
6.1%inclusion410 decks6.73K decks
2%synergy
Lands
Forest
94%inclusion6.36K decks6.73K decks
-1%synergy
Island
94%inclusion6.35K decks6.73K decks
-1%synergy
Command Tower
86%inclusion5.81K decks6.73K decks
1%synergy
Hinterland Harbor
65%inclusion4.38K decks6.73K decks
6%synergy
Breeding Pool
55%inclusion3.69K decks6.73K decks
9%synergy
Yavimaya Coast
55%inclusion3.68K decks6.73K decks
2%synergy
Rejuvenating Springs
54%inclusion3.67K decks6.73K decks
11%synergy
Simic Growth Chamber
50%inclusion3.34K decks6.73K decks
1%synergy
Dreamroot Cascade
49%inclusion3.32K decks6.73K decks
7%synergy
Flooded Grove
44%inclusion2.97K decks6.73K decks
3%synergy
Temple of Mystery
37%inclusion2.51K decks6.73K decks
-1%synergy
Misty Rainforest
36%inclusion2.45K decks6.73K decks
5%synergy
Vineglimmer Snarl
36%inclusion2.41K decks6.73K decks
-3%synergy
Barkchannel Pathway
35%inclusion2.38K decks6.73K decks
15%synergy
Myriad Landscape
27%inclusion1.80K decks6.73K decks
5%synergy
Exotic Orchard
25%inclusion1.69K decks6.73K decks
1%synergy
Evolving Wilds
23%inclusion1.53K decks6.73K decks
-2%synergy
Waterlogged Grove
21%inclusion1.44K decks6.73K decks
1%synergy
Thornwood Falls
20%inclusion1.36K decks6.73K decks
3%synergy
Tangled Islet
20%inclusion1.34K decks6.73K decks
4%synergy
Hedge Maze
19%inclusion1.27K decks6.55K decks
0%synergy
Willowrush Verge
18%inclusion695 decks3.80K decks
2%synergy
Fabled Passage
17%inclusion1.17K decks6.73K decks
3%synergy
Rimewood Falls
17%inclusion1.17K decks6.73K decks
8%synergy
Terramorphic Expanse
16%inclusion1.08K decks6.73K decks
-4%synergy
Overflowing Basin
15%inclusion951 decks6.32K decks
-4%synergy
Tropical Island
15%inclusion991 decks6.73K decks
1%synergy
Botanical Sanctum
13%inclusion878 decks6.73K decks
1%synergy
Bala Ged Recovery
12%inclusion832 decks6.73K decks
2%synergy
Sink into Stupor
11%inclusion646 decks5.75K decks
0%synergy
Simic Guildgate
10%inclusion698 decks6.73K decks
0%synergy
Path of Ancestry
10%inclusion689 decks6.73K decks
-7%synergy
Snow-Covered Island
9.2%inclusion618 decks6.73K decks
2%synergy
Snow-Covered Forest
9.2%inclusion616 decks6.73K decks
2%synergy
Prismatic Vista
9.1%inclusion611 decks6.73K decks
2%synergy
Glasspool Mimic
8.9%inclusion598 decks6.73K decks
5%synergy
Blighted Woodland
8.3%inclusion559 decks6.73K decks
1%synergy
Flooded Strand
7.7%inclusion521 decks6.73K decks
-3%synergy
Windswept Heath
7.7%inclusion515 decks6.73K decks
-3%synergy
Verdant Catacombs
7.5%inclusion505 decks6.73K decks
-2%synergy
Littjara Mirrorlake
7.4%inclusion501 decks6.73K decks
3%synergy
Polluted Delta
7.1%inclusion480 decks6.73K decks
-3%synergy
Sea Gate Restoration
6.8%inclusion461 decks6.73K decks
1%synergy
Scalding Tarn
6.7%inclusion454 decks6.73K decks
-3%synergy
Wooded Foothills
6.3%inclusion424 decks6.73K decks
-3%synergy
Woodland Stream
6.2%inclusion418 decks6.73K decks
1%synergy
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Commander SpellbookFABRECSpellvoid
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