Koma, Cosmos Serpent (Commander)

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #295
6,654decks
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
10%inclusion53 decks517 decks
6%synergy
Shared Roots
5.5%inclusion27 decks487 decks
3%synergy
Ember Island Production
2.5%inclusion12 decks487 decks
2%synergy
Wan Shi Tong, Librarian
2.0%inclusion11 decks550 decks
-3%synergy
Badgermole Cub
1.8%inclusion10 decks550 decks
-2%synergy
High Synergy Cards
Adrix and Nev, Twincasters
76%inclusion5.06K decks6.65K decks
68%synergy
Whelming Wave
73%inclusion4.87K decks6.65K decks
62%synergy
Elemental Bond
67%inclusion4.49K decks6.65K decks
62%synergy
Spark Double
63%inclusion4.22K decks6.65K decks
54%synergy
Koma, World-Eater
65%inclusion2.94K decks4.54K decks
51%synergy
Junk Winder
57%inclusion3.81K decks6.65K decks
51%synergy
Parallel Lives
55%inclusion3.63K decks6.65K decks
49%synergy
Serpent of Yawning Depths
54%inclusion3.62K decks6.65K decks
48%synergy
Irenicus's Vile Duplication
53%inclusion3.52K decks6.65K decks
47%synergy
Sakashima of a Thousand Faces
50%inclusion3.30K decks6.65K decks
44%synergy
Top Cards
Cultivate
78%inclusion5.19K decks6.65K decks
31%synergy
Counterspell
74%inclusion4.91K decks6.65K decks
24%synergy
Kodama's Reach
71%inclusion4.70K decks6.65K decks
34%synergy
Rampant Growth
69%inclusion4.59K decks6.65K decks
28%synergy
Beast Within
61%inclusion4.09K decks6.65K decks
11%synergy
Nature's Lore
58%inclusion3.86K decks6.65K decks
28%synergy
Growth Spiral
56%inclusion3.76K decks6.65K decks
12%synergy
Heroic Intervention
54%inclusion3.57K decks6.65K decks
23%synergy
Farseek
53%inclusion3.54K decks6.65K decks
29%synergy
Aesi, Tyrant of Gyre Strait
52%inclusion3.48K decks6.65K decks
35%synergy
Game Changers
Cyclonic Rift
44%inclusion2.94K decks6.65K decks
18%synergy
Rhystic Study
40%inclusion2.67K decks6.65K decks
18%synergy
Fierce Guardianship
32%inclusion2.16K decks6.65K decks
15%synergy
Seedborn Muse
29%inclusion1.92K decks6.65K decks
13%synergy
Worldly Tutor
23%inclusion1.50K decks6.65K decks
7%synergy
Consecrated Sphinx
20%inclusion1.34K decks6.65K decks
11%synergy
Mystical Tutor
17%inclusion1.10K decks6.65K decks
7%synergy
Force of Will
14%inclusion940 decks6.65K decks
4%synergy
Ancient Tomb
13%inclusion868 decks6.65K decks
4%synergy
Gaea's Cradle
10%inclusion674 decks6.65K decks
3%synergy
Creatures
Llanowar Elves
48%inclusion3.22K decks6.65K decks
21%synergy
Spawning Kraken
48%inclusion3.16K decks6.65K decks
40%synergy
Birds of Paradise
46%inclusion3.04K decks6.65K decks
18%synergy
Arixmethes, Slumbering Isle
42%inclusion2.81K decks6.65K decks
29%synergy
Sakura-Tribe Elder
40%inclusion2.63K decks6.65K decks
20%synergy
Sakashima the Impostor
39%inclusion2.56K decks6.65K decks
36%synergy
Elvish Mystic
38%inclusion2.53K decks6.65K decks
14%synergy
Tatyova, Benthic Druid
37%inclusion2.49K decks6.65K decks
6%synergy
Murkfiend Liege
36%inclusion2.38K decks6.65K decks
21%synergy
Garruk's Packleader
33%inclusion2.19K decks6.65K decks
31%synergy
Craterhoof Behemoth
31%inclusion2.10K decks6.65K decks
22%synergy
Hullbreaker Horror
30%inclusion2.01K decks6.65K decks
12%synergy
Eternal Witness
29%inclusion1.94K decks6.65K decks
8%synergy
Ohran Frostfang
29%inclusion1.93K decks6.65K decks
25%synergy
Fyndhorn Elves
28%inclusion1.86K decks6.65K decks
12%synergy
Roaming Throne
28%inclusion1.86K decks6.65K decks
20%synergy
Summon: Leviathan
27%inclusion629 decks2.37K decks
19%synergy
Slinn Voda, the Rising Deep
25%inclusion1.68K decks6.65K decks
19%synergy
Enduring Vitality
25%inclusion1.24K decks4.99K decks
18%synergy
Octomancer
25%inclusion1.31K decks5.29K decks
20%synergy
Esix, Fractal Bloom
24%inclusion1.60K decks6.65K decks
20%synergy
Archetype of Imagination
22%inclusion1.47K decks6.65K decks
18%synergy
Coiling Oracle
21%inclusion1.37K decks6.65K decks
7%synergy
Fanatic of Rhonas
20%inclusion1.10K decks5.60K decks
14%synergy
Scourge of Fleets
16%inclusion1.07K decks6.65K decks
8%synergy
Curiosity Crafter
15%inclusion984 decks6.65K decks
11%synergy
Reclamation Sage
15%inclusion980 decks6.65K decks
0%synergy
Xolatoyac, the Smiling Flood
15%inclusion976 decks6.65K decks
7%synergy
Nezahal, Primal Tide
15%inclusion970 decks6.65K decks
3%synergy
Scute Swarm
15%inclusion967 decks6.65K decks
-6%synergy
Delighted Halfling
14%inclusion905 decks6.65K decks
2%synergy
Enduring Curiosity
13%inclusion674 decks5.04K decks
10%synergy
Nadir Kraken
13%inclusion886 decks6.65K decks
9%synergy
Avenger of Zendikar
13%inclusion865 decks6.65K decks
-5%synergy
Toski, Bearer of Secrets
13%inclusion850 decks6.65K decks
9%synergy
Starwinder
13%inclusion214 decks1.70K decks
6%synergy
Azusa, Lost but Seeking
12%inclusion817 decks6.65K decks
-2%synergy
Chameleon, Master of Disguise
12%inclusion143 decks1.17K decks
10%synergy
Troyan, Gutsy Explorer
12%inclusion810 decks6.65K decks
9%synergy
Stormtide Leviathan
12%inclusion784 decks6.65K decks
6%synergy
Saryth, the Viper's Fang
11%inclusion754 decks6.65K decks
10%synergy
Rampaging Baloths
11%inclusion749 decks6.65K decks
-6%synergy
Progenitor Mimic
10%inclusion674 decks6.65K decks
5%synergy
Circle of Dreams Druid
10%inclusion668 decks6.65K decks
8%synergy
Lotus Cobra
10%inclusion667 decks6.65K decks
-4%synergy
Uro, Titan of Nature's Wrath
10%inclusion664 decks6.65K decks
0%synergy
Jaheira, Friend of the Forest
10%inclusion640 decks6.65K decks
6%synergy
Clever Impersonator
10%inclusion636 decks6.65K decks
5%synergy
Inga and Esika
10%inclusion633 decks6.65K decks
7%synergy
Kiora, Sovereign of the Deep
9.2%inclusion615 decks6.65K decks
7%synergy
Instants
Negate
47%inclusion3.12K decks6.65K decks
21%synergy
Double Major
47%inclusion3.11K decks6.65K decks
38%synergy
Pongify
39%inclusion2.61K decks6.65K decks
14%synergy
Second Harvest
37%inclusion2.48K decks6.65K decks
31%synergy
Arcane Denial
37%inclusion2.46K decks6.65K decks
15%synergy
An Offer You Can't Refuse
36%inclusion2.40K decks6.65K decks
13%synergy
Mana Drain
35%inclusion2.30K decks6.65K decks
19%synergy
Return of the Wildspeaker
32%inclusion2.12K decks6.65K decks
21%synergy
Swan Song
32%inclusion2.11K decks6.65K decks
13%synergy
Rapid Hybridization
30%inclusion2.03K decks6.65K decks
4%synergy
Krosan Grip
24%inclusion1.57K decks6.65K decks
16%synergy
Simic Charm
19%inclusion1.27K decks6.65K decks
11%synergy
Reality Shift
18%inclusion1.21K decks6.65K decks
4%synergy
Nature's Claim
17%inclusion1.10K decks6.65K decks
6%synergy
Brainstorm
16%inclusion1.06K decks6.65K decks
2%synergy
Planar Genesis
15%inclusion833 decks5.58K decks
4%synergy
Harrow
15%inclusion980 decks6.65K decks
3%synergy
Tamiyo's Safekeeping
13%inclusion867 decks6.65K decks
7%synergy
Return to Nature
13%inclusion840 decks6.65K decks
7%synergy
Voidslime
13%inclusion838 decks6.65K decks
8%synergy
Eureka Moment
12%inclusion813 decks6.65K decks
1%synergy
Aetherize
12%inclusion800 decks6.65K decks
0%synergy
Snakeskin Veil
12%inclusion776 decks6.65K decks
6%synergy
Force of Negation
11%inclusion751 decks6.65K decks
3%synergy
Plasm Capture
11%inclusion745 decks6.65K decks
8%synergy
Sink into Stupor
11%inclusion627 decks5.61K decks
0%synergy
Mystic Reflection
11%inclusion743 decks6.65K decks
9%synergy
Chord of Calling
10%inclusion678 decks6.65K decks
2%synergy
Pact of Negation
9.0%inclusion599 decks6.65K decks
2%synergy
Entish Restoration
8.4%inclusion561 decks6.65K decks
-1%synergy
Perplexing Test
8.0%inclusion535 decks6.65K decks
3%synergy
Archdruid's Charm
8.0%inclusion513 decks6.38K decks
2%synergy
Noxious Revival
7.7%inclusion515 decks6.65K decks
2%synergy
Decisive Denial
7.7%inclusion510 decks6.65K decks
3%synergy
Resculpt
7.6%inclusion508 decks6.65K decks
2%synergy
Stubborn Denial
7.6%inclusion507 decks6.65K decks
5%synergy
Disallow
7.5%inclusion501 decks6.65K decks
6%synergy
Sublime Epiphany
7.5%inclusion500 decks6.65K decks
5%synergy
Narset's Reversal
6.6%inclusion441 decks6.65K decks
5%synergy
Tyvar's Stand
6.5%inclusion434 decks6.65K decks
4%synergy
Strix Serenade
6.2%inclusion350 decks5.61K decks
2%synergy
Force of Vigor
5.7%inclusion382 decks6.65K decks
1%synergy
Auroral Procession
5.7%inclusion168 decks2.95K decks
2%synergy
Lazotep Plating
5.6%inclusion372 decks6.65K decks
5%synergy
Collective Resistance
5.5%inclusion310 decks5.61K decks
2%synergy
Joint Exploration
5.5%inclusion367 decks6.65K decks
0%synergy
Sorceries
Three Visits
49%inclusion3.23K decks6.65K decks
26%synergy
Skyshroud Claim
38%inclusion2.52K decks6.65K decks
29%synergy
Quantum Misalignment
28%inclusion1.85K decks6.65K decks
25%synergy
Explore
28%inclusion1.85K decks6.65K decks
7%synergy
Overwhelming Stampede
24%inclusion1.59K decks6.65K decks
12%synergy
Rite of Replication
17%inclusion1.14K decks6.65K decks
10%synergy
Shamanic Revelation
16%inclusion1.09K decks6.65K decks
11%synergy
Migration Path
15%inclusion998 decks6.65K decks
12%synergy
Urban Evolution
14%inclusion961 decks6.65K decks
5%synergy
Rishkar's Expertise
14%inclusion932 decks6.65K decks
6%synergy
Triumph of the Hordes
13%inclusion848 decks6.65K decks
10%synergy
Distant Melody
13%inclusion832 decks6.65K decks
9%synergy
Bala Ged Recovery
12%inclusion826 decks6.65K decks
2%synergy
Finale of Devastation
12%inclusion813 decks6.65K decks
1%synergy
Explosive Vegetation
12%inclusion786 decks6.65K decks
6%synergy
Harmonize
11%inclusion723 decks6.65K decks
5%synergy
Curse of the Swine
8.8%inclusion588 decks6.65K decks
-2%synergy
Search for Tomorrow
8.8%inclusion584 decks6.65K decks
4%synergy
Ponder
8.3%inclusion554 decks6.65K decks
1%synergy
Regrowth
7.6%inclusion508 decks6.65K decks
4%synergy
Doppelgang
7.2%inclusion461 decks6.40K decks
1%synergy
Ravenform
7.0%inclusion464 decks6.65K decks
2%synergy
Sea Gate Restoration
6.9%inclusion459 decks6.65K decks
1%synergy
Green Sun's Zenith
6.5%inclusion432 decks6.65K decks
-2%synergy
Preposterous Proportions
6.3%inclusion284 decks4.50K decks
5%synergy
Windfall
6.0%inclusion400 decks6.65K decks
2%synergy
Ezuri's Predation
6.0%inclusion399 decks6.65K decks
-2%synergy
Preordain
5.5%inclusion369 decks6.65K decks
-3%synergy
Quasiduplicate
5.5%inclusion363 decks6.65K decks
3%synergy
Broken Bond
5.2%inclusion347 decks6.65K decks
0%synergy
Flare of Cultivation
5.2%inclusion317 decks6.13K decks
3%synergy
Utility Artifacts
Swiftfoot Boots
45%inclusion2.97K decks6.65K decks
19%synergy
Helm of the Host
43%inclusion2.86K decks6.65K decks
38%synergy
Lightning Greaves
42%inclusion2.77K decks6.65K decks
20%synergy
Combine Chrysalis
26%inclusion1.71K decks6.65K decks
21%synergy
Mirror Box
18%inclusion1.18K decks6.65K decks
14%synergy
Emerald Medallion
13%inclusion863 decks6.65K decks
10%synergy
The Great Henge
12%inclusion781 decks6.65K decks
3%synergy
Idol of Oblivion
11%inclusion759 decks6.65K decks
8%synergy
Sapphire Medallion
10%inclusion677 decks6.65K decks
7%synergy
Eldrazi Monument
10%inclusion638 decks6.65K decks
9%synergy
Bident of Thassa
9.3%inclusion622 decks6.65K decks
2%synergy
Coat of Arms
7.6%inclusion503 decks6.65K decks
6%synergy
The One Ring
6.9%inclusion460 decks6.65K decks
-1%synergy
Banner of Kinship
5.8%inclusion263 decks4.52K decks
4%synergy
Skullclamp
5.2%inclusion345 decks6.65K decks
4%synergy
Enchantments
Doubling Season
49%inclusion3.25K decks6.65K decks
39%synergy
Tribute to the World Tree
44%inclusion2.94K decks6.65K decks
38%synergy
Kindred Discovery
31%inclusion2.06K decks6.65K decks
21%synergy
Mystic Remora
28%inclusion1.85K decks6.65K decks
12%synergy
Primal Vigor
18%inclusion1.22K decks6.65K decks
15%synergy
Garruk's Uprising
18%inclusion1.19K decks6.65K decks
2%synergy
Growing Rites of Itlimoc
18%inclusion1.18K decks6.65K decks
12%synergy
Sylvan Library
15%inclusion1.02K decks6.65K decks
6%synergy
Wild Growth
15%inclusion1.01K decks6.65K decks
6%synergy
Exploration
15%inclusion982 decks6.65K decks
1%synergy
Beastmaster Ascension
15%inclusion980 decks6.65K decks
12%synergy
Cryptolith Rite
15%inclusion965 decks6.65K decks
11%synergy
Utopia Sprawl
13%inclusion874 decks6.65K decks
7%synergy
Paradox Haze
12%inclusion831 decks6.65K decks
12%synergy
Propaganda
11%inclusion731 decks6.65K decks
4%synergy
Wilderness Reclamation
10%inclusion671 decks6.65K decks
1%synergy
Unnatural Growth
10%inclusion662 decks6.65K decks
7%synergy
Impostor Syndrome
9.3%inclusion110 decks1.18K decks
7%synergy
Defense of the Heart
9.0%inclusion601 decks6.65K decks
7%synergy
Moonlit Meditation
8.9%inclusion152 decks1.71K decks
7%synergy
Extravagant Replication
7.8%inclusion522 decks6.65K decks
5%synergy
Imprisoned in the Moon
7.7%inclusion515 decks6.65K decks
4%synergy
Burgeoning
7.7%inclusion513 decks6.65K decks
1%synergy
Kenrith's Transformation
7.2%inclusion481 decks6.65K decks
3%synergy
Asceticism
7.2%inclusion477 decks6.65K decks
4%synergy
Ominous Seas
6.8%inclusion453 decks6.65K decks
2%synergy
Verity Circle
5.7%inclusion379 decks6.65K decks
5%synergy
Dismiss into Dream
5.5%inclusion363 decks6.65K decks
5%synergy
Planeswalkers
Oko, Thief of Crowns
21%inclusion1.39K decks6.65K decks
14%synergy
Kiora, the Crashing Wave
7.9%inclusion527 decks6.65K decks
5%synergy
Utility Lands
Reliquary Tower
61%inclusion4.05K decks6.65K decks
11%synergy
Boseiju, Who Endures
25%inclusion1.69K decks6.65K decks
3%synergy
Yavimaya, Cradle of Growth
24%inclusion1.62K decks6.65K decks
2%synergy
Otawara, Soaring City
21%inclusion1.39K decks6.65K decks
2%synergy
Temple of the False God
20%inclusion1.31K decks6.65K decks
4%synergy
Command Beacon
18%inclusion1.22K decks6.65K decks
14%synergy
Mosswort Bridge
17%inclusion1.10K decks6.65K decks
-1%synergy
Three Tree City
16%inclusion863 decks5.34K decks
11%synergy
Rogue's Passage
15%inclusion987 decks6.65K decks
-7%synergy
Mystic Sanctuary
14%inclusion958 decks6.65K decks
2%synergy
Castle Garenbrig
13%inclusion864 decks6.65K decks
8%synergy
Mistrise Village
12%inclusion368 decks2.95K decks
2%synergy
Alchemist's Refuge
12%inclusion788 decks6.65K decks
-6%synergy
Evendo, Waking Haven
11%inclusion200 decks1.75K decks
6%synergy
Restless Vinestalk
5.9%inclusion390 decks6.65K decks
0%synergy
Castle Vantress
5.7%inclusion382 decks6.65K decks
-1%synergy
Lumbering Falls
5.2%inclusion349 decks6.65K decks
-2%synergy
Mana Artifacts
Sol Ring
92%inclusion6.10K decks6.65K decks
11%synergy
Arcane Signet
78%inclusion5.17K decks6.65K decks
15%synergy
Simic Signet
44%inclusion2.94K decks6.65K decks
12%synergy
Thought Vessel
39%inclusion2.58K decks6.65K decks
19%synergy
Talisman of Curiosity
33%inclusion2.22K decks6.65K decks
12%synergy
Commander's Sphere
12%inclusion776 decks6.65K decks
3%synergy
Fellwar Stone
11%inclusion735 decks6.65K decks
2%synergy
Decanter of Endless Water
7.4%inclusion492 decks6.65K decks
2%synergy
Mana Vault
7.0%inclusion468 decks6.65K decks
1%synergy
Thran Dynamo
7.0%inclusion466 decks6.65K decks
4%synergy
Mind Stone
6.2%inclusion413 decks6.65K decks
2%synergy
Lands
Forest
95%inclusion6.29K decks6.65K decks
-1%synergy
Island
94%inclusion6.28K decks6.65K decks
-1%synergy
Command Tower
86%inclusion5.75K decks6.65K decks
1%synergy
Hinterland Harbor
65%inclusion4.32K decks6.65K decks
6%synergy
Yavimaya Coast
55%inclusion3.63K decks6.65K decks
2%synergy
Breeding Pool
55%inclusion3.63K decks6.65K decks
9%synergy
Rejuvenating Springs
54%inclusion3.62K decks6.65K decks
11%synergy
Simic Growth Chamber
50%inclusion3.31K decks6.65K decks
1%synergy
Dreamroot Cascade
49%inclusion3.27K decks6.65K decks
7%synergy
Flooded Grove
44%inclusion2.93K decks6.65K decks
3%synergy
Temple of Mystery
37%inclusion2.49K decks6.65K decks
-1%synergy
Misty Rainforest
36%inclusion2.42K decks6.65K decks
5%synergy
Vineglimmer Snarl
36%inclusion2.40K decks6.65K decks
-3%synergy
Barkchannel Pathway
35%inclusion2.35K decks6.65K decks
15%synergy
Myriad Landscape
27%inclusion1.80K decks6.65K decks
5%synergy
Exotic Orchard
25%inclusion1.67K decks6.65K decks
1%synergy
Evolving Wilds
23%inclusion1.52K decks6.65K decks
-2%synergy
Waterlogged Grove
21%inclusion1.42K decks6.65K decks
1%synergy
Thornwood Falls
20%inclusion1.36K decks6.65K decks
3%synergy
Tangled Islet
20%inclusion1.33K decks6.65K decks
4%synergy
Hedge Maze
19%inclusion1.25K decks6.41K decks
0%synergy
Willowrush Verge
18%inclusion668 decks3.65K decks
2%synergy
Rimewood Falls
18%inclusion1.17K decks6.65K decks
8%synergy
Fabled Passage
17%inclusion1.16K decks6.65K decks
3%synergy
Terramorphic Expanse
16%inclusion1.08K decks6.65K decks
-4%synergy
Overflowing Basin
15%inclusion926 decks6.18K decks
-4%synergy
Tropical Island
15%inclusion987 decks6.65K decks
1%synergy
Botanical Sanctum
13%inclusion874 decks6.65K decks
1%synergy
Bala Ged Recovery
12%inclusion826 decks6.65K decks
2%synergy
Sink into Stupor
11%inclusion627 decks5.61K decks
0%synergy
Simic Guildgate
10%inclusion693 decks6.65K decks
0%synergy
Path of Ancestry
10%inclusion675 decks6.65K decks
-7%synergy
Snow-Covered Island
9.2%inclusion609 decks6.65K decks
2%synergy
Prismatic Vista
9.1%inclusion606 decks6.65K decks
2%synergy
Snow-Covered Forest
9.1%inclusion605 decks6.65K decks
2%synergy
Glasspool Mimic
9.1%inclusion603 decks6.65K decks
5%synergy
Blighted Woodland
8.5%inclusion564 decks6.65K decks
1%synergy
Flooded Strand
7.8%inclusion517 decks6.65K decks
-3%synergy
Windswept Heath
7.7%inclusion511 decks6.65K decks
-3%synergy
Littjara Mirrorlake
7.5%inclusion502 decks6.65K decks
4%synergy
Verdant Catacombs
7.5%inclusion502 decks6.65K decks
-2%synergy
Polluted Delta
7.2%inclusion477 decks6.65K decks
-3%synergy
Sea Gate Restoration
6.9%inclusion459 decks6.65K decks
1%synergy
Scalding Tarn
6.8%inclusion451 decks6.65K decks
-3%synergy
Woodland Stream
6.3%inclusion422 decks6.65K decks
1%synergy
Wooded Foothills
6.3%inclusion421 decks6.65K decks
-3%synergy
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