Koma, Cosmos Serpent (Commander) - Good Stuff

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #302
22decks
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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Wan Shi Tong, Librarian
14%inclusion1 decks7 decks
9%synergy
The Unagi of Kyoshi Island
14%inclusion1 decks7 decks
9%synergy
High Synergy Cards
Adrix and Nev, Twincasters
82%inclusion18 decks22 decks
73%synergy
Sakashima of a Thousand Faces
77%inclusion17 decks22 decks
72%synergy
Elemental Bond
73%inclusion16 decks22 decks
67%synergy
Parallel Lives
73%inclusion16 decks22 decks
67%synergy
Spark Double
73%inclusion16 decks22 decks
63%synergy
Whelming Wave
68%inclusion15 decks22 decks
57%synergy
Doubling Season
64%inclusion14 decks22 decks
54%synergy
Koma, World-Eater
67%inclusion12 decks18 decks
53%synergy
Tribute to the World Tree
59%inclusion13 decks22 decks
53%synergy
Irenicus's Vile Duplication
55%inclusion12 decks22 decks
48%synergy
Top Cards
Heroic Intervention
73%inclusion16 decks22 decks
42%synergy
Counterspell
73%inclusion16 decks22 decks
23%synergy
Three Visits
68%inclusion15 decks22 decks
45%synergy
Nature's Lore
68%inclusion15 decks22 decks
38%synergy
Cultivate
68%inclusion15 decks22 decks
21%synergy
Beast Within
59%inclusion13 decks22 decks
9%synergy
Kodama's Reach
55%inclusion12 decks22 decks
18%synergy
Farseek
55%inclusion12 decks22 decks
30%synergy
Rampant Growth
55%inclusion12 decks22 decks
14%synergy
Lightning Greaves
55%inclusion12 decks22 decks
33%synergy
Game Changers
Fierce Guardianship
64%inclusion14 decks22 decks
46%synergy
Cyclonic Rift
64%inclusion14 decks22 decks
38%synergy
Consecrated Sphinx
45%inclusion10 decks22 decks
37%synergy
Rhystic Study
45%inclusion10 decks22 decks
24%synergy
Seedborn Muse
36%inclusion8 decks22 decks
21%synergy
Ancient Tomb
32%inclusion7 decks22 decks
23%synergy
Mystical Tutor
32%inclusion7 decks22 decks
23%synergy
Force of Will
27%inclusion6 decks22 decks
17%synergy
Worldly Tutor
27%inclusion6 decks22 decks
12%synergy
The One Ring
23%inclusion5 decks22 decks
15%synergy
Creatures
Sakashima the Impostor
50%inclusion11 decks22 decks
47%synergy
Spawning Kraken
45%inclusion10 decks22 decks
38%synergy
Craterhoof Behemoth
41%inclusion9 decks22 decks
31%synergy
Ohran Frostfang
41%inclusion9 decks22 decks
37%synergy
Serpent of Yawning Depths
41%inclusion9 decks22 decks
35%synergy
Birds of Paradise
41%inclusion9 decks22 decks
13%synergy
Garruk's Packleader
36%inclusion8 decks22 decks
34%synergy
Roaming Throne
36%inclusion8 decks22 decks
28%synergy
Aesi, Tyrant of Gyre Strait
36%inclusion8 decks22 decks
19%synergy
Curiosity Crafter
32%inclusion7 decks22 decks
28%synergy
Junk Winder
32%inclusion7 decks22 decks
25%synergy
Llanowar Elves
32%inclusion7 decks22 decks
4%synergy
Sakura-Tribe Elder
32%inclusion7 decks22 decks
12%synergy
Uro, Titan of Nature's Wrath
32%inclusion7 decks22 decks
22%synergy
Summon: Leviathan
31%inclusion4 decks13 decks
24%synergy
Enduring Vitality
28%inclusion5 decks18 decks
20%synergy
Elvish Mystic
27%inclusion6 decks22 decks
3%synergy
Fyndhorn Elves
27%inclusion6 decks22 decks
12%synergy
Toski, Bearer of Secrets
23%inclusion5 decks22 decks
19%synergy
Enduring Curiosity
22%inclusion4 decks18 decks
19%synergy
Reclamation Sage
18%inclusion4 decks22 decks
4%synergy
Collector Ouphe
18%inclusion4 decks22 decks
17%synergy
Lotus Cobra
18%inclusion4 decks22 decks
4%synergy
Kinnan, Bonder Prodigy
18%inclusion4 decks22 decks
15%synergy
Glasspool Mimic
18%inclusion4 decks22 decks
14%synergy
Arixmethes, Slumbering Isle
18%inclusion4 decks22 decks
5%synergy
Vorinclex, Voice of Hunger
18%inclusion4 decks22 decks
15%synergy
Delighted Halfling
18%inclusion4 decks22 decks
7%synergy
Octomancer
16%inclusion3 decks19 decks
11%synergy
Selvala, Heart of the Wilds
14%inclusion3 decks22 decks
10%synergy
Phyrexian Metamorph
14%inclusion3 decks22 decks
5%synergy
Archetype of Endurance
14%inclusion3 decks22 decks
12%synergy
Progenitor Mimic
14%inclusion3 decks22 decks
9%synergy
Esix, Fractal Bloom
14%inclusion3 decks22 decks
10%synergy
Nezahal, Primal Tide
14%inclusion3 decks22 decks
3%synergy
Trygon Predator
14%inclusion3 decks22 decks
7%synergy
Hullbreaker Horror
14%inclusion3 decks22 decks
-4%synergy
Quilled Greatwurm
11%inclusion2 decks18 decks
9%synergy
Volatile Stormdrake
11%inclusion2 decks19 decks
8%synergy
Fanatic of Rhonas
11%inclusion2 decks19 decks
5%synergy
Pollywog Prodigy
11%inclusion2 decks19 decks
4%synergy
Chameleon, Master of Disguise
10%inclusion1 decks10 decks
8%synergy
Watchful Radstag
10%inclusion2 decks21 decks
9%synergy
Llanowar Loamspeaker
9.1%inclusion2 decks22 decks
7%synergy
Jaheira, Friend of the Forest
9.1%inclusion2 decks22 decks
5%synergy
Troyan, Gutsy Explorer
9.1%inclusion2 decks22 decks
6%synergy
Wonder
9.1%inclusion2 decks22 decks
7%synergy
Worldspine Wurm
9.1%inclusion2 decks22 decks
5%synergy
Eternal Witness
9.1%inclusion2 decks22 decks
-12%synergy
Thrasios, Triton Hero
9.1%inclusion2 decks22 decks
2%synergy
Instants
Swan Song
50%inclusion11 decks22 decks
31%synergy
An Offer You Can't Refuse
45%inclusion10 decks22 decks
22%synergy
Growth Spiral
41%inclusion9 decks22 decks
-4%synergy
Mana Drain
41%inclusion9 decks22 decks
25%synergy
Sink into Stupor
37%inclusion7 decks19 decks
25%synergy
Pongify
36%inclusion8 decks22 decks
12%synergy
Return of the Wildspeaker
36%inclusion8 decks22 decks
26%synergy
Rapid Hybridization
32%inclusion7 decks22 decks
6%synergy
Force of Vigor
32%inclusion7 decks22 decks
27%synergy
Arcane Denial
32%inclusion7 decks22 decks
9%synergy
Nature's Claim
27%inclusion6 decks22 decks
17%synergy
Force of Negation
27%inclusion6 decks22 decks
19%synergy
Stubborn Denial
23%inclusion5 decks22 decks
20%synergy
Second Harvest
23%inclusion5 decks22 decks
16%synergy
Reality Shift
23%inclusion5 decks22 decks
8%synergy
Perplexing Test
23%inclusion5 decks22 decks
18%synergy
Double Major
23%inclusion5 decks22 decks
14%synergy
Three Steps Ahead
19%inclusion4 decks21 decks
16%synergy
Plasm Capture
18%inclusion4 decks22 decks
15%synergy
Krosan Grip
18%inclusion4 decks22 decks
10%synergy
Chord of Calling
18%inclusion4 decks22 decks
10%synergy
Joint Exploration
18%inclusion4 decks22 decks
12%synergy
Planar Genesis
16%inclusion3 decks19 decks
5%synergy
Snakeskin Veil
14%inclusion3 decks22 decks
8%synergy
Crop Rotation
14%inclusion3 decks22 decks
0%synergy
Negate
14%inclusion3 decks22 decks
-12%synergy
Tyvar's Stand
14%inclusion3 decks22 decks
11%synergy
Filter Out
14%inclusion3 decks22 decks
11%synergy
Delay
14%inclusion3 decks22 decks
11%synergy
Tamiyo's Safekeeping
14%inclusion3 decks22 decks
8%synergy
Voidslime
14%inclusion3 decks22 decks
9%synergy
Spider-Sense
10%inclusion1 decks10 decks
9%synergy
Incubation // Incongruity
9.1%inclusion2 decks22 decks
7%synergy
Archdruid's Charm
9.1%inclusion2 decks22 decks
3%synergy
Reverse the Polarity
9.1%inclusion2 decks22 decks
8%synergy
Mindbreak Trap
9.1%inclusion2 decks22 decks
4%synergy
Barrier Breach
9.1%inclusion2 decks22 decks
9%synergy
Legolas's Quick Reflexes
9.1%inclusion2 decks22 decks
7%synergy
Harrow
9.1%inclusion2 decks22 decks
-3%synergy
Reweave
9.1%inclusion2 decks22 decks
9%synergy
Aetherize
9.1%inclusion2 decks22 decks
-3%synergy
Resculpt
9.1%inclusion2 decks22 decks
3%synergy
Flusterstorm
9.1%inclusion2 decks22 decks
2%synergy
Disallow
9.1%inclusion2 decks22 decks
7%synergy
Wash Away
9.1%inclusion2 decks22 decks
8%synergy
Pull from Tomorrow
9.1%inclusion2 decks22 decks
6%synergy
Lazotep Plating
9.1%inclusion2 decks22 decks
9%synergy
Simic Charm
9.1%inclusion2 decks22 decks
1%synergy
Borne Upon a Wind
9.1%inclusion2 decks22 decks
8%synergy
Miscast
9.1%inclusion2 decks22 decks
7%synergy
Sorceries
Triumph of the Hordes
36%inclusion8 decks22 decks
33%synergy
Bala Ged Recovery
36%inclusion8 decks22 decks
26%synergy
Quantum Misalignment
27%inclusion6 decks22 decks
24%synergy
Skyshroud Claim
27%inclusion6 decks22 decks
18%synergy
Sea Gate Restoration
23%inclusion5 decks22 decks
17%synergy
Finale of Devastation
23%inclusion5 decks22 decks
11%synergy
Shamanic Revelation
23%inclusion5 decks22 decks
17%synergy
Green Sun's Zenith
18%inclusion4 decks22 decks
9%synergy
Eldritch Evolution
18%inclusion4 decks22 decks
15%synergy
Rishkar's Expertise
18%inclusion4 decks22 decks
10%synergy
Distant Melody
18%inclusion4 decks22 decks
15%synergy
Migration Path
18%inclusion4 decks22 decks
15%synergy
Overwhelming Stampede
18%inclusion4 decks22 decks
6%synergy
Raise the Palisade
18%inclusion4 decks22 decks
12%synergy
Windfall
14%inclusion3 decks22 decks
10%synergy
Turntimber Symbiosis
14%inclusion3 decks22 decks
11%synergy
Neoform
14%inclusion3 decks22 decks
10%synergy
Open the Way
14%inclusion3 decks22 decks
11%synergy
Bridgeworks Battle
11%inclusion2 decks19 decks
6%synergy
Flare of Cultivation
10%inclusion2 decks21 decks
7%synergy
Ponder
9.1%inclusion2 decks22 decks
2%synergy
Polymorph
9.1%inclusion2 decks22 decks
9%synergy
Flood of Tears
9.1%inclusion2 decks22 decks
7%synergy
Quasiduplicate
9.1%inclusion2 decks22 decks
6%synergy
Explosive Vegetation
9.1%inclusion2 decks22 decks
3%synergy
Explore
9.1%inclusion2 decks22 decks
-11%synergy
Doppelgang
9.1%inclusion2 decks22 decks
3%synergy
Ezuri's Predation
9.1%inclusion2 decks22 decks
1%synergy
Time Warp
9.1%inclusion2 decks22 decks
7%synergy
Season of Weaving
5.3%inclusion1 decks19 decks
2%synergy
Utility Artifacts
Swiftfoot Boots
41%inclusion9 decks22 decks
15%synergy
Helm of the Host
32%inclusion7 decks22 decks
26%synergy
Mirror Box
14%inclusion3 decks22 decks
10%synergy
The Great Henge
14%inclusion3 decks22 decks
5%synergy
Combine Chrysalis
14%inclusion3 decks22 decks
9%synergy
Idol of Oblivion
14%inclusion3 decks22 decks
10%synergy
Emerald Medallion
14%inclusion3 decks22 decks
11%synergy
Bident of Thassa
14%inclusion3 decks22 decks
6%synergy
Sensei's Divining Top
9.1%inclusion2 decks22 decks
5%synergy
Winter Orb
9.1%inclusion2 decks22 decks
9%synergy
Symmetry Matrix
9.1%inclusion2 decks22 decks
9%synergy
Null Rod
9.1%inclusion2 decks22 decks
9%synergy
Coat of Arms
9.1%inclusion2 decks22 decks
8%synergy
Phyrexian Altar
9.1%inclusion2 decks22 decks
9%synergy
Proteus Staff
9.1%inclusion2 decks22 decks
9%synergy
Fountainport Bell
5.3%inclusion1 decks19 decks
5%synergy
Enchantments
Kindred Discovery
45%inclusion10 decks22 decks
36%synergy
Mystic Remora
45%inclusion10 decks22 decks
30%synergy
Sylvan Library
32%inclusion7 decks22 decks
23%synergy
Utopia Sprawl
18%inclusion4 decks22 decks
12%synergy
Beastmaster Ascension
18%inclusion4 decks22 decks
15%synergy
Wild Growth
18%inclusion4 decks22 decks
9%synergy
Primal Vigor
18%inclusion4 decks22 decks
15%synergy
Growing Rites of Itlimoc
18%inclusion4 decks22 decks
12%synergy
Cryptolith Rite
14%inclusion3 decks22 decks
11%synergy
Verity Circle
14%inclusion3 decks22 decks
13%synergy
Carpet of Flowers
14%inclusion3 decks22 decks
11%synergy
Extravagant Replication
14%inclusion3 decks22 decks
11%synergy
Defense of the Heart
14%inclusion3 decks22 decks
11%synergy
Mirror Room // Fractured Realm
11%inclusion2 decks18 decks
10%synergy
Impostor Syndrome
10%inclusion1 decks10 decks
8%synergy
Garruk's Uprising
9.1%inclusion2 decks22 decks
-7%synergy
Wilderness Reclamation
9.1%inclusion2 decks22 decks
0%synergy
Unnatural Growth
9.1%inclusion2 decks22 decks
6%synergy
Dismiss into Dream
9.1%inclusion2 decks22 decks
9%synergy
Greater Good
9.1%inclusion2 decks22 decks
7%synergy
Moonlit Meditation
9.1%inclusion1 decks11 decks
8%synergy
Walk-In Closet // Forgotten Cellar
5.6%inclusion1 decks18 decks
2%synergy
Battles
Invasion of Ikoria
9.1%inclusion2 decks22 decks
5%synergy
Invasion of Zendikar
9.1%inclusion2 decks22 decks
7%synergy
Planeswalkers
Oko, Thief of Crowns
50%inclusion11 decks22 decks
43%synergy
Narset, Parter of Veils
18%inclusion4 decks22 decks
17%synergy
Teferi, Master of Time
14%inclusion3 decks22 decks
13%synergy
Nissa, Ascended Animist
9.1%inclusion2 decks22 decks
8%synergy
Utility Lands
Boseiju, Who Endures
50%inclusion11 decks22 decks
28%synergy
Otawara, Soaring City
45%inclusion10 decks22 decks
26%synergy
Reliquary Tower
41%inclusion9 decks22 decks
-9%synergy
Yavimaya, Cradle of Growth
32%inclusion7 decks22 decks
10%synergy
Command Beacon
27%inclusion6 decks22 decks
23%synergy
Evendo, Waking Haven
27%inclusion3 decks11 decks
22%synergy
Three Tree City
26%inclusion5 decks19 decks
21%synergy
Mistrise Village
23%inclusion3 decks13 decks
12%synergy
Alchemist's Refuge
18%inclusion4 decks22 decks
1%synergy
Gaea's Cradle
18%inclusion4 decks22 decks
11%synergy
Castle Garenbrig
18%inclusion4 decks22 decks
14%synergy
Minamo, School at Water's Edge
14%inclusion3 decks22 decks
7%synergy
Mystic Sanctuary
14%inclusion3 decks22 decks
1%synergy
Urza's Saga
14%inclusion3 decks22 decks
8%synergy
Mosswort Bridge
14%inclusion3 decks22 decks
-4%synergy
Nykthos, Shrine to Nyx
14%inclusion3 decks22 decks
11%synergy
Temple of the False God
14%inclusion3 decks22 decks
-2%synergy
Shifting Woodland
11%inclusion2 decks19 decks
4%synergy
Boseiju, Who Shelters All
9.1%inclusion2 decks22 decks
8%synergy
Scavenger Grounds
9.1%inclusion2 decks22 decks
5%synergy
Emergence Zone
9.1%inclusion2 decks22 decks
5%synergy
Lonely Sandbar
9.1%inclusion2 decks22 decks
5%synergy
Tranquil Thicket
9.1%inclusion2 decks22 decks
5%synergy
Field of the Dead
9.1%inclusion2 decks22 decks
3%synergy
Novijen, Heart of Progress
9.1%inclusion2 decks22 decks
5%synergy
Bonders' Enclave
9.1%inclusion2 decks22 decks
7%synergy
Fountainport
5.3%inclusion1 decks19 decks
4%synergy
Mana Artifacts
Sol Ring
91%inclusion20 decks22 decks
10%synergy
Arcane Signet
64%inclusion14 decks22 decks
1%synergy
Simic Signet
36%inclusion8 decks22 decks
4%synergy
Thought Vessel
36%inclusion8 decks22 decks
16%synergy
Mana Vault
18%inclusion4 decks22 decks
12%synergy
Talisman of Curiosity
18%inclusion4 decks22 decks
-3%synergy
Basalt Monolith
14%inclusion3 decks22 decks
7%synergy
Jeweled Lotus
9.1%inclusion2 decks22 decks
7%synergy
Lotus Petal
9.1%inclusion2 decks22 decks
2%synergy
Fellwar Stone
9.1%inclusion2 decks22 decks
0%synergy
Thran Dynamo
9.1%inclusion2 decks22 decks
6%synergy
Mind Stone
9.1%inclusion2 decks22 decks
5%synergy
Lands
Command Tower
91%inclusion20 decks22 decks
6%synergy
Island
91%inclusion20 decks22 decks
-5%synergy
Forest
91%inclusion20 decks22 decks
-4%synergy
Rejuvenating Springs
86%inclusion19 decks22 decks
43%synergy
Flooded Grove
77%inclusion17 decks22 decks
36%synergy
Breeding Pool
73%inclusion16 decks22 decks
27%synergy
Yavimaya Coast
73%inclusion16 decks22 decks
20%synergy
Hinterland Harbor
73%inclusion16 decks22 decks
13%synergy
Barkchannel Pathway
64%inclusion14 decks22 decks
43%synergy
Waterlogged Grove
64%inclusion14 decks22 decks
43%synergy
Misty Rainforest
59%inclusion13 decks22 decks
28%synergy
Dreamroot Cascade
59%inclusion13 decks22 decks
17%synergy
Simic Growth Chamber
50%inclusion11 decks22 decks
2%synergy
Sink into Stupor
37%inclusion7 decks19 decks
25%synergy
Exotic Orchard
36%inclusion8 decks22 decks
12%synergy
Bala Ged Recovery
36%inclusion8 decks22 decks
26%synergy
Vineglimmer Snarl
32%inclusion7 decks22 decks
-7%synergy
Temple of Mystery
32%inclusion7 decks22 decks
-6%synergy
Willowrush Verge
31%inclusion5 decks16 decks
15%synergy
Myriad Landscape
27%inclusion6 decks22 decks
5%synergy
Hedge Maze
27%inclusion6 decks22 decks
8%synergy
Fabled Passage
23%inclusion5 decks22 decks
8%synergy
Sea Gate Restoration
23%inclusion5 decks22 decks
17%synergy
Tropical Island
23%inclusion5 decks22 decks
8%synergy
Rimewood Falls
23%inclusion5 decks22 decks
14%synergy
Prismatic Vista
18%inclusion4 decks22 decks
11%synergy
Snow-Covered Island
18%inclusion4 decks22 decks
11%synergy
Snow-Covered Forest
18%inclusion4 decks22 decks
11%synergy
Reflecting Pool
18%inclusion4 decks22 decks
15%synergy
Glasspool Mimic
18%inclusion4 decks22 decks
14%synergy
Mana Confluence
18%inclusion4 decks22 decks
12%synergy
Overflowing Basin
14%inclusion3 decks21 decks
-5%synergy
Turntimber Symbiosis
14%inclusion3 decks22 decks
11%synergy
Verdant Catacombs
14%inclusion3 decks22 decks
4%synergy
Botanical Sanctum
14%inclusion3 decks22 decks
1%synergy
Scalding Tarn
14%inclusion3 decks22 decks
4%synergy
Bridgeworks Battle
11%inclusion2 decks19 decks
6%synergy
Blighted Woodland
9.1%inclusion2 decks22 decks
2%synergy
Windswept Heath
9.1%inclusion2 decks22 decks
-1%synergy
Tanglepool Bridge
9.1%inclusion2 decks22 decks
4%synergy
Littjara Mirrorlake
9.1%inclusion2 decks22 decks
5%synergy
Tangled Islet
9.1%inclusion2 decks22 decks
-7%synergy
Cavern of Souls
9.1%inclusion2 decks22 decks
3%synergy
Plaza of Heroes
9.1%inclusion2 decks22 decks
8%synergy
Evolving Wilds
9.1%inclusion2 decks22 decks
-16%synergy
Path of Ancestry
9.1%inclusion2 decks22 decks
-8%synergy
City of Brass
9.1%inclusion2 decks22 decks
3%synergy
Flooded Strand
9.1%inclusion2 decks22 decks
-2%synergy
Command Bridge
9.1%inclusion1 decks11 decks
9%synergy
Lazotep Quarry
5.3%inclusion1 decks19 decks
2%synergy
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