Koma, Cosmos Serpent (Commander)

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #298
6,676decks
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
12%inclusion69 decks594 decks
7%synergy
Shared Roots
6.9%inclusion39 decks564 decks
4%synergy
Ember Island Production
2.5%inclusion14 decks564 decks
2%synergy
Wan Shi Tong, Librarian
2.1%inclusion13 decks627 decks
-3%synergy
Badgermole Cub
1.8%inclusion11 decks627 decks
-3%synergy
High Synergy Cards
Adrix and Nev, Twincasters
76%inclusion5.08K decks6.68K decks
68%synergy
Elemental Bond
67%inclusion4.50K decks6.68K decks
62%synergy
Whelming Wave
73%inclusion4.88K decks6.68K decks
62%synergy
Spark Double
63%inclusion4.24K decks6.68K decks
54%synergy
Koma, World-Eater
65%inclusion2.98K decks4.60K decks
51%synergy
Junk Winder
57%inclusion3.82K decks6.68K decks
51%synergy
Parallel Lives
55%inclusion3.65K decks6.68K decks
49%synergy
Serpent of Yawning Depths
54%inclusion3.64K decks6.68K decks
48%synergy
Irenicus's Vile Duplication
53%inclusion3.53K decks6.68K decks
47%synergy
Sakashima of a Thousand Faces
50%inclusion3.31K decks6.68K decks
44%synergy
Top Cards
Cultivate
78%inclusion5.20K decks6.68K decks
31%synergy
Counterspell
74%inclusion4.92K decks6.68K decks
24%synergy
Kodama's Reach
70%inclusion4.70K decks6.68K decks
34%synergy
Rampant Growth
69%inclusion4.61K decks6.68K decks
28%synergy
Beast Within
61%inclusion4.09K decks6.68K decks
11%synergy
Nature's Lore
58%inclusion3.88K decks6.68K decks
28%synergy
Growth Spiral
57%inclusion3.77K decks6.68K decks
12%synergy
Heroic Intervention
54%inclusion3.58K decks6.68K decks
23%synergy
Farseek
53%inclusion3.56K decks6.68K decks
29%synergy
Aesi, Tyrant of Gyre Strait
53%inclusion3.51K decks6.68K decks
35%synergy
Game Changers
Cyclonic Rift
44%inclusion2.95K decks6.68K decks
18%synergy
Rhystic Study
40%inclusion2.68K decks6.68K decks
18%synergy
Fierce Guardianship
32%inclusion2.17K decks6.68K decks
15%synergy
Seedborn Muse
29%inclusion1.92K decks6.68K decks
13%synergy
Worldly Tutor
23%inclusion1.50K decks6.68K decks
7%synergy
Consecrated Sphinx
20%inclusion1.35K decks6.68K decks
11%synergy
Mystical Tutor
17%inclusion1.10K decks6.68K decks
7%synergy
Force of Will
14%inclusion939 decks6.68K decks
4%synergy
Ancient Tomb
13%inclusion867 decks6.68K decks
4%synergy
Gaea's Cradle
10%inclusion674 decks6.68K decks
3%synergy
Creatures
Llanowar Elves
48%inclusion3.23K decks6.68K decks
21%synergy
Spawning Kraken
48%inclusion3.18K decks6.68K decks
40%synergy
Birds of Paradise
46%inclusion3.05K decks6.68K decks
18%synergy
Arixmethes, Slumbering Isle
42%inclusion2.83K decks6.68K decks
29%synergy
Sakura-Tribe Elder
40%inclusion2.64K decks6.68K decks
20%synergy
Sakashima the Impostor
38%inclusion2.56K decks6.68K decks
36%synergy
Elvish Mystic
38%inclusion2.54K decks6.68K decks
14%synergy
Tatyova, Benthic Druid
38%inclusion2.51K decks6.68K decks
6%synergy
Murkfiend Liege
36%inclusion2.39K decks6.68K decks
21%synergy
Garruk's Packleader
33%inclusion2.19K decks6.68K decks
31%synergy
Craterhoof Behemoth
32%inclusion2.11K decks6.68K decks
22%synergy
Hullbreaker Horror
30%inclusion2.02K decks6.68K decks
13%synergy
Eternal Witness
29%inclusion1.95K decks6.68K decks
8%synergy
Ohran Frostfang
29%inclusion1.94K decks6.68K decks
25%synergy
Roaming Throne
28%inclusion1.87K decks6.68K decks
20%synergy
Fyndhorn Elves
28%inclusion1.86K decks6.68K decks
12%synergy
Summon: Leviathan
27%inclusion656 decks2.43K decks
20%synergy
Slinn Voda, the Rising Deep
25%inclusion1.69K decks6.68K decks
19%synergy
Enduring Vitality
25%inclusion1.25K decks5.04K decks
17%synergy
Octomancer
25%inclusion1.33K decks5.35K decks
20%synergy
Esix, Fractal Bloom
24%inclusion1.61K decks6.68K decks
20%synergy
Archetype of Imagination
22%inclusion1.49K decks6.68K decks
18%synergy
Coiling Oracle
21%inclusion1.38K decks6.68K decks
7%synergy
Fanatic of Rhonas
20%inclusion1.10K decks5.65K decks
14%synergy
Scourge of Fleets
16%inclusion1.07K decks6.68K decks
8%synergy
Xolatoyac, the Smiling Flood
15%inclusion987 decks6.68K decks
7%synergy
Curiosity Crafter
15%inclusion983 decks6.68K decks
11%synergy
Nezahal, Primal Tide
15%inclusion975 decks6.68K decks
4%synergy
Reclamation Sage
15%inclusion973 decks6.68K decks
0%synergy
Scute Swarm
14%inclusion963 decks6.68K decks
-7%synergy
Delighted Halfling
14%inclusion905 decks6.68K decks
2%synergy
Nadir Kraken
13%inclusion888 decks6.68K decks
9%synergy
Enduring Curiosity
13%inclusion678 decks5.10K decks
10%synergy
Avenger of Zendikar
13%inclusion863 decks6.68K decks
-5%synergy
Toski, Bearer of Secrets
13%inclusion856 decks6.68K decks
9%synergy
Starwinder
13%inclusion226 decks1.76K decks
6%synergy
Chameleon, Master of Disguise
12%inclusion153 decks1.24K decks
10%synergy
Azusa, Lost but Seeking
12%inclusion823 decks6.68K decks
-2%synergy
Troyan, Gutsy Explorer
12%inclusion804 decks6.68K decks
9%synergy
Stormtide Leviathan
12%inclusion789 decks6.68K decks
6%synergy
Saryth, the Viper's Fang
11%inclusion752 decks6.68K decks
10%synergy
Rampaging Baloths
11%inclusion751 decks6.68K decks
-6%synergy
Progenitor Mimic
10%inclusion674 decks6.68K decks
5%synergy
Circle of Dreams Druid
10%inclusion666 decks6.68K decks
8%synergy
Lotus Cobra
10%inclusion665 decks6.68K decks
-4%synergy
Uro, Titan of Nature's Wrath
10%inclusion665 decks6.68K decks
0%synergy
Jaheira, Friend of the Forest
10%inclusion638 decks6.68K decks
6%synergy
Inga and Esika
9.5%inclusion633 decks6.68K decks
7%synergy
Clever Impersonator
9.4%inclusion627 decks6.68K decks
5%synergy
Kiora, Sovereign of the Deep
9.2%inclusion617 decks6.68K decks
7%synergy
Instants
Negate
47%inclusion3.13K decks6.68K decks
21%synergy
Double Major
47%inclusion3.12K decks6.68K decks
38%synergy
Pongify
39%inclusion2.63K decks6.68K decks
15%synergy
Arcane Denial
37%inclusion2.48K decks6.68K decks
15%synergy
Second Harvest
37%inclusion2.47K decks6.68K decks
31%synergy
An Offer You Can't Refuse
36%inclusion2.42K decks6.68K decks
13%synergy
Mana Drain
35%inclusion2.31K decks6.68K decks
19%synergy
Return of the Wildspeaker
32%inclusion2.12K decks6.68K decks
21%synergy
Swan Song
32%inclusion2.12K decks6.68K decks
13%synergy
Rapid Hybridization
31%inclusion2.04K decks6.68K decks
4%synergy
Krosan Grip
23%inclusion1.57K decks6.68K decks
15%synergy
Simic Charm
19%inclusion1.27K decks6.68K decks
11%synergy
Reality Shift
18%inclusion1.22K decks6.68K decks
4%synergy
Nature's Claim
16%inclusion1.10K decks6.68K decks
6%synergy
Brainstorm
16%inclusion1.06K decks6.68K decks
2%synergy
Planar Genesis
15%inclusion845 decks5.63K decks
4%synergy
Harrow
15%inclusion978 decks6.68K decks
3%synergy
Tamiyo's Safekeeping
13%inclusion868 decks6.68K decks
7%synergy
Return to Nature
13%inclusion841 decks6.68K decks
7%synergy
Voidslime
13%inclusion840 decks6.68K decks
7%synergy
Eureka Moment
12%inclusion811 decks6.68K decks
1%synergy
Aetherize
12%inclusion806 decks6.68K decks
0%synergy
Snakeskin Veil
12%inclusion778 decks6.68K decks
6%synergy
Sink into Stupor
11%inclusion637 decks5.66K decks
0%synergy
Force of Negation
11%inclusion751 decks6.68K decks
3%synergy
Plasm Capture
11%inclusion747 decks6.68K decks
8%synergy
Mystic Reflection
11%inclusion736 decks6.68K decks
8%synergy
Chord of Calling
10%inclusion678 decks6.68K decks
2%synergy
Pact of Negation
9.0%inclusion600 decks6.68K decks
2%synergy
Entish Restoration
8.4%inclusion562 decks6.68K decks
-1%synergy
Archdruid's Charm
8.0%inclusion516 decks6.44K decks
2%synergy
Perplexing Test
8.0%inclusion534 decks6.68K decks
3%synergy
Noxious Revival
7.7%inclusion513 decks6.68K decks
2%synergy
Resculpt
7.7%inclusion512 decks6.68K decks
2%synergy
Stubborn Denial
7.6%inclusion509 decks6.68K decks
5%synergy
Decisive Denial
7.6%inclusion508 decks6.68K decks
3%synergy
Disallow
7.5%inclusion502 decks6.68K decks
6%synergy
Sublime Epiphany
7.5%inclusion500 decks6.68K decks
5%synergy
Narset's Reversal
6.6%inclusion438 decks6.68K decks
5%synergy
Tyvar's Stand
6.5%inclusion434 decks6.68K decks
4%synergy
Strix Serenade
6.2%inclusion353 decks5.66K decks
2%synergy
Force of Vigor
5.7%inclusion382 decks6.68K decks
1%synergy
Auroral Procession
5.6%inclusion168 decks3.01K decks
2%synergy
Lazotep Plating
5.6%inclusion372 decks6.68K decks
5%synergy
Collective Resistance
5.5%inclusion313 decks5.66K decks
2%synergy
Joint Exploration
5.5%inclusion366 decks6.68K decks
0%synergy
Sorceries
Three Visits
49%inclusion3.24K decks6.68K decks
26%synergy
Skyshroud Claim
38%inclusion2.53K decks6.68K decks
29%synergy
Quantum Misalignment
28%inclusion1.85K decks6.68K decks
25%synergy
Explore
28%inclusion1.85K decks6.68K decks
7%synergy
Overwhelming Stampede
24%inclusion1.60K decks6.68K decks
12%synergy
Rite of Replication
17%inclusion1.15K decks6.68K decks
10%synergy
Shamanic Revelation
16%inclusion1.09K decks6.68K decks
11%synergy
Migration Path
15%inclusion1K decks6.68K decks
12%synergy
Urban Evolution
14%inclusion959 decks6.68K decks
5%synergy
Rishkar's Expertise
14%inclusion928 decks6.68K decks
6%synergy
Triumph of the Hordes
13%inclusion843 decks6.68K decks
10%synergy
Distant Melody
12%inclusion831 decks6.68K decks
9%synergy
Bala Ged Recovery
12%inclusion827 decks6.68K decks
2%synergy
Finale of Devastation
12%inclusion815 decks6.68K decks
1%synergy
Explosive Vegetation
12%inclusion788 decks6.68K decks
6%synergy
Harmonize
11%inclusion719 decks6.68K decks
5%synergy
Curse of the Swine
8.9%inclusion591 decks6.68K decks
-2%synergy
Search for Tomorrow
8.7%inclusion581 decks6.68K decks
4%synergy
Ponder
8.3%inclusion556 decks6.68K decks
1%synergy
Regrowth
7.6%inclusion508 decks6.68K decks
4%synergy
Doppelgang
7.2%inclusion466 decks6.45K decks
1%synergy
Ravenform
6.9%inclusion462 decks6.68K decks
2%synergy
Sea Gate Restoration
6.9%inclusion461 decks6.68K decks
1%synergy
Green Sun's Zenith
6.5%inclusion433 decks6.68K decks
-2%synergy
Preposterous Proportions
6.3%inclusion287 decks4.55K decks
5%synergy
Windfall
6.0%inclusion402 decks6.68K decks
2%synergy
Ezuri's Predation
6.0%inclusion401 decks6.68K decks
-2%synergy
Preordain
5.5%inclusion368 decks6.68K decks
-3%synergy
Quasiduplicate
5.3%inclusion356 decks6.68K decks
3%synergy
Broken Bond
5.2%inclusion350 decks6.68K decks
0%synergy
Flare of Cultivation
5.2%inclusion319 decks6.19K decks
3%synergy
Utility Artifacts
Swiftfoot Boots
45%inclusion2.98K decks6.68K decks
19%synergy
Helm of the Host
43%inclusion2.87K decks6.68K decks
38%synergy
Lightning Greaves
42%inclusion2.77K decks6.68K decks
20%synergy
Combine Chrysalis
26%inclusion1.71K decks6.68K decks
21%synergy
Mirror Box
18%inclusion1.18K decks6.68K decks
14%synergy
Emerald Medallion
13%inclusion877 decks6.68K decks
10%synergy
The Great Henge
12%inclusion779 decks6.68K decks
3%synergy
Idol of Oblivion
11%inclusion755 decks6.68K decks
8%synergy
Sapphire Medallion
10%inclusion684 decks6.68K decks
7%synergy
Eldrazi Monument
10%inclusion639 decks6.68K decks
9%synergy
Bident of Thassa
9.4%inclusion628 decks6.68K decks
2%synergy
Coat of Arms
7.6%inclusion505 decks6.68K decks
6%synergy
The One Ring
7.0%inclusion465 decks6.68K decks
-1%synergy
Banner of Kinship
5.7%inclusion263 decks4.58K decks
4%synergy
Skullclamp
5.1%inclusion342 decks6.68K decks
4%synergy
Enchantments
Doubling Season
49%inclusion3.27K decks6.68K decks
39%synergy
Tribute to the World Tree
44%inclusion2.95K decks6.68K decks
38%synergy
Kindred Discovery
31%inclusion2.07K decks6.68K decks
21%synergy
Mystic Remora
28%inclusion1.86K decks6.68K decks
12%synergy
Primal Vigor
18%inclusion1.22K decks6.68K decks
15%synergy
Garruk's Uprising
18%inclusion1.21K decks6.68K decks
2%synergy
Growing Rites of Itlimoc
18%inclusion1.19K decks6.68K decks
12%synergy
Sylvan Library
15%inclusion1.03K decks6.68K decks
6%synergy
Wild Growth
15%inclusion1.02K decks6.68K decks
6%synergy
Exploration
15%inclusion985 decks6.68K decks
1%synergy
Beastmaster Ascension
15%inclusion983 decks6.68K decks
12%synergy
Cryptolith Rite
14%inclusion968 decks6.68K decks
11%synergy
Utopia Sprawl
13%inclusion877 decks6.68K decks
7%synergy
Paradox Haze
12%inclusion829 decks6.68K decks
12%synergy
Propaganda
11%inclusion740 decks6.68K decks
4%synergy
Wilderness Reclamation
10%inclusion672 decks6.68K decks
1%synergy
Unnatural Growth
10%inclusion662 decks6.68K decks
7%synergy
Impostor Syndrome
9.3%inclusion116 decks1.25K decks
7%synergy
Defense of the Heart
9.0%inclusion600 decks6.68K decks
7%synergy
Moonlit Meditation
8.6%inclusion152 decks1.77K decks
7%synergy
Extravagant Replication
7.8%inclusion523 decks6.68K decks
5%synergy
Imprisoned in the Moon
7.7%inclusion516 decks6.68K decks
4%synergy
Burgeoning
7.7%inclusion515 decks6.68K decks
1%synergy
Kenrith's Transformation
7.2%inclusion479 decks6.68K decks
3%synergy
Asceticism
7.1%inclusion477 decks6.68K decks
4%synergy
Ominous Seas
6.8%inclusion457 decks6.68K decks
2%synergy
Verity Circle
5.7%inclusion379 decks6.68K decks
5%synergy
Dismiss into Dream
5.4%inclusion361 decks6.68K decks
5%synergy
Planeswalkers
Oko, Thief of Crowns
21%inclusion1.39K decks6.68K decks
14%synergy
Kiora, the Crashing Wave
8.0%inclusion531 decks6.68K decks
5%synergy
Utility Lands
Reliquary Tower
61%inclusion4.05K decks6.68K decks
11%synergy
Boseiju, Who Endures
25%inclusion1.69K decks6.68K decks
3%synergy
Yavimaya, Cradle of Growth
24%inclusion1.62K decks6.68K decks
2%synergy
Otawara, Soaring City
21%inclusion1.39K decks6.68K decks
2%synergy
Temple of the False God
20%inclusion1.32K decks6.68K decks
4%synergy
Command Beacon
18%inclusion1.22K decks6.68K decks
14%synergy
Mosswort Bridge
17%inclusion1.10K decks6.68K decks
-1%synergy
Three Tree City
16%inclusion868 decks5.39K decks
11%synergy
Rogue's Passage
15%inclusion993 decks6.68K decks
-7%synergy
Mystic Sanctuary
14%inclusion961 decks6.68K decks
2%synergy
Castle Garenbrig
13%inclusion866 decks6.68K decks
8%synergy
Mistrise Village
12%inclusion372 decks3.01K decks
2%synergy
Alchemist's Refuge
12%inclusion789 decks6.68K decks
-6%synergy
Evendo, Waking Haven
11%inclusion207 decks1.82K decks
6%synergy
Restless Vinestalk
5.8%inclusion385 decks6.68K decks
0%synergy
Castle Vantress
5.8%inclusion384 decks6.68K decks
-1%synergy
Lumbering Falls
5.2%inclusion345 decks6.68K decks
-2%synergy
Mana Artifacts
Sol Ring
92%inclusion6.12K decks6.68K decks
11%synergy
Arcane Signet
78%inclusion5.18K decks6.68K decks
15%synergy
Simic Signet
44%inclusion2.93K decks6.68K decks
12%synergy
Thought Vessel
39%inclusion2.60K decks6.68K decks
19%synergy
Talisman of Curiosity
33%inclusion2.23K decks6.68K decks
12%synergy
Commander's Sphere
12%inclusion773 decks6.68K decks
3%synergy
Fellwar Stone
11%inclusion738 decks6.68K decks
2%synergy
Decanter of Endless Water
7.4%inclusion491 decks6.68K decks
2%synergy
Mana Vault
7.0%inclusion469 decks6.68K decks
1%synergy
Thran Dynamo
7.0%inclusion465 decks6.68K decks
4%synergy
Mind Stone
6.1%inclusion410 decks6.68K decks
2%synergy
Lands
Forest
95%inclusion6.31K decks6.68K decks
-1%synergy
Island
94%inclusion6.30K decks6.68K decks
-1%synergy
Command Tower
86%inclusion5.76K decks6.68K decks
1%synergy
Hinterland Harbor
65%inclusion4.34K decks6.68K decks
6%synergy
Breeding Pool
55%inclusion3.65K decks6.68K decks
9%synergy
Yavimaya Coast
55%inclusion3.64K decks6.68K decks
2%synergy
Rejuvenating Springs
54%inclusion3.64K decks6.68K decks
11%synergy
Simic Growth Chamber
50%inclusion3.32K decks6.68K decks
1%synergy
Dreamroot Cascade
49%inclusion3.29K decks6.68K decks
7%synergy
Flooded Grove
44%inclusion2.95K decks6.68K decks
3%synergy
Temple of Mystery
37%inclusion2.49K decks6.68K decks
-1%synergy
Misty Rainforest
37%inclusion2.44K decks6.68K decks
5%synergy
Vineglimmer Snarl
36%inclusion2.40K decks6.68K decks
-3%synergy
Barkchannel Pathway
35%inclusion2.36K decks6.68K decks
15%synergy
Myriad Landscape
27%inclusion1.80K decks6.68K decks
5%synergy
Exotic Orchard
25%inclusion1.68K decks6.68K decks
1%synergy
Evolving Wilds
23%inclusion1.52K decks6.68K decks
-2%synergy
Waterlogged Grove
21%inclusion1.43K decks6.68K decks
1%synergy
Thornwood Falls
20%inclusion1.36K decks6.68K decks
3%synergy
Tangled Islet
20%inclusion1.33K decks6.68K decks
4%synergy
Hedge Maze
19%inclusion1.26K decks6.47K decks
0%synergy
Willowrush Verge
18%inclusion677 decks3.71K decks
2%synergy
Fabled Passage
17%inclusion1.17K decks6.68K decks
3%synergy
Rimewood Falls
17%inclusion1.16K decks6.68K decks
8%synergy
Terramorphic Expanse
16%inclusion1.08K decks6.68K decks
-4%synergy
Overflowing Basin
15%inclusion937 decks6.23K decks
-4%synergy
Tropical Island
15%inclusion990 decks6.68K decks
1%synergy
Botanical Sanctum
13%inclusion873 decks6.68K decks
1%synergy
Bala Ged Recovery
12%inclusion827 decks6.68K decks
2%synergy
Sink into Stupor
11%inclusion637 decks5.66K decks
0%synergy
Simic Guildgate
10%inclusion693 decks6.68K decks
0%synergy
Path of Ancestry
10%inclusion680 decks6.68K decks
-7%synergy
Snow-Covered Island
9.2%inclusion612 decks6.68K decks
2%synergy
Snow-Covered Forest
9.1%inclusion608 decks6.68K decks
2%synergy
Prismatic Vista
9.1%inclusion607 decks6.68K decks
2%synergy
Glasspool Mimic
9.0%inclusion600 decks6.68K decks
5%synergy
Blighted Woodland
8.4%inclusion558 decks6.68K decks
1%synergy
Flooded Strand
7.8%inclusion519 decks6.68K decks
-3%synergy
Windswept Heath
7.7%inclusion514 decks6.68K decks
-3%synergy
Verdant Catacombs
7.5%inclusion503 decks6.68K decks
-2%synergy
Littjara Mirrorlake
7.5%inclusion500 decks6.68K decks
4%synergy
Polluted Delta
7.2%inclusion478 decks6.68K decks
-3%synergy
Sea Gate Restoration
6.9%inclusion461 decks6.68K decks
1%synergy
Scalding Tarn
6.8%inclusion451 decks6.68K decks
-3%synergy
Wooded Foothills
6.3%inclusion423 decks6.68K decks
-3%synergy
Woodland Stream
6.3%inclusion420 decks6.68K decks
1%synergy
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Commander SpellbookFABRECSpellvoid
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