Koma, Cosmos Serpent (Commander) - Upgraded

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #302
379decks
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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Sodden Verdure
22%inclusion2 decks9 decks
20%synergy
The Unagi of Kyoshi Island
17%inclusion22 decks127 decks
12%synergy
Tam, Mindful First-Year
14%inclusion1 decks7 decks
14%synergy
Rain-Slicked Copse
11%inclusion1 decks9 decks
10%synergy
Shared Roots
9.0%inclusion11 decks122 decks
5%synergy
High Synergy Cards
Adrix and Nev, Twincasters
76%inclusion288 decks379 decks
67%synergy
Whelming Wave
76%inclusion287 decks379 decks
64%synergy
Elemental Bond
68%inclusion256 decks379 decks
62%synergy
Spark Double
65%inclusion247 decks379 decks
56%synergy
Koma, World-Eater
64%inclusion239 decks376 decks
50%synergy
Parallel Lives
55%inclusion210 decks379 decks
49%synergy
Junk Winder
56%inclusion211 decks379 decks
49%synergy
Serpent of Yawning Depths
55%inclusion207 decks379 decks
48%synergy
Irenicus's Vile Duplication
50%inclusion189 decks379 decks
44%synergy
Sakashima of a Thousand Faces
47%inclusion179 decks379 decks
42%synergy
Top Cards
Cultivate
75%inclusion284 decks379 decks
28%synergy
Counterspell
74%inclusion279 decks379 decks
24%synergy
Rampant Growth
70%inclusion264 decks379 decks
29%synergy
Kodama's Reach
68%inclusion256 decks379 decks
32%synergy
Beast Within
59%inclusion223 decks379 decks
9%synergy
Nature's Lore
58%inclusion219 decks379 decks
27%synergy
Farseek
55%inclusion208 decks379 decks
30%synergy
Heroic Intervention
53%inclusion200 decks379 decks
22%synergy
Aesi, Tyrant of Gyre Strait
53%inclusion199 decks379 decks
35%synergy
Growth Spiral
52%inclusion198 decks379 decks
8%synergy
Game Changers
Cyclonic Rift
37%inclusion142 decks379 decks
12%synergy
Rhystic Study
31%inclusion116 decks379 decks
9%synergy
Seedborn Muse
24%inclusion92 decks379 decks
9%synergy
Fierce Guardianship
24%inclusion90 decks379 decks
6%synergy
Worldly Tutor
17%inclusion63 decks379 decks
1%synergy
Consecrated Sphinx
16%inclusion61 decks379 decks
7%synergy
Force of Will
6.3%inclusion24 decks379 decks
-4%synergy
Gaea's Cradle
5.5%inclusion21 decks379 decks
-2%synergy
Ancient Tomb
5.3%inclusion20 decks379 decks
-4%synergy
Creatures
Llanowar Elves
47%inclusion178 decks379 decks
19%synergy
Spawning Kraken
45%inclusion171 decks379 decks
38%synergy
Arixmethes, Slumbering Isle
44%inclusion167 decks379 decks
31%synergy
Birds of Paradise
42%inclusion159 decks379 decks
14%synergy
Sakura-Tribe Elder
41%inclusion154 decks379 decks
21%synergy
Craterhoof Behemoth
37%inclusion142 decks379 decks
28%synergy
Sakashima the Impostor
37%inclusion141 decks379 decks
35%synergy
Tatyova, Benthic Druid
37%inclusion140 decks379 decks
6%synergy
Elvish Mystic
35%inclusion132 decks379 decks
11%synergy
Murkfiend Liege
32%inclusion122 decks379 decks
18%synergy
Garruk's Packleader
31%inclusion118 decks379 decks
29%synergy
Hullbreaker Horror
29%inclusion111 decks379 decks
11%synergy
Summon: Leviathan
28%inclusion82 decks288 decks
21%synergy
Eternal Witness
27%inclusion104 decks379 decks
6%synergy
Ohran Frostfang
27%inclusion103 decks379 decks
23%synergy
Roaming Throne
24%inclusion90 decks379 decks
16%synergy
Archetype of Imagination
23%inclusion88 decks379 decks
19%synergy
Fyndhorn Elves
23%inclusion87 decks379 decks
7%synergy
Enduring Vitality
23%inclusion86 decks376 decks
15%synergy
Octomancer
20%inclusion76 decks378 decks
15%synergy
Fanatic of Rhonas
20%inclusion76 decks379 decks
14%synergy
Coiling Oracle
20%inclusion75 decks379 decks
7%synergy
Slinn Voda, the Rising Deep
19%inclusion73 decks379 decks
13%synergy
Esix, Fractal Bloom
19%inclusion73 decks379 decks
15%synergy
Chameleon, Master of Disguise
17%inclusion31 decks187 decks
14%synergy
Starwinder
15%inclusion35 decks231 decks
8%synergy
Scourge of Fleets
15%inclusion56 decks379 decks
7%synergy
Reclamation Sage
14%inclusion53 decks379 decks
0%synergy
Scute Swarm
13%inclusion49 decks379 decks
-8%synergy
Saryth, the Viper's Fang
13%inclusion48 decks379 decks
11%synergy
Curiosity Crafter
13%inclusion48 decks379 decks
9%synergy
Nadir Kraken
12%inclusion47 decks379 decks
8%synergy
Enduring Curiosity
12%inclusion46 decks377 decks
9%synergy
Uro, Titan of Nature's Wrath
12%inclusion44 decks379 decks
2%synergy
Xolatoyac, the Smiling Flood
11%inclusion42 decks379 decks
4%synergy
Circle of Dreams Druid
11%inclusion42 decks379 decks
9%synergy
Avenger of Zendikar
11%inclusion42 decks379 decks
-7%synergy
Glasspool Mimic
11%inclusion42 decks379 decks
7%synergy
Stormtide Leviathan
11%inclusion41 decks379 decks
5%synergy
Tireless Provisioner
10%inclusion38 decks379 decks
-5%synergy
Toski, Bearer of Secrets
10%inclusion38 decks379 decks
7%synergy
Azusa, Lost but Seeking
9.5%inclusion36 decks379 decks
-5%synergy
Delighted Halfling
9.5%inclusion36 decks379 decks
-2%synergy
Rampaging Baloths
9.2%inclusion35 decks379 decks
-8%synergy
Lotus Cobra
9.2%inclusion35 decks379 decks
-5%synergy
Nezahal, Primal Tide
9.2%inclusion35 decks379 decks
-2%synergy
Clever Impersonator
9.0%inclusion34 decks379 decks
4%synergy
Phyrexian Metamorph
8.7%inclusion33 decks379 decks
0%synergy
Auton Soldier
8.2%inclusion31 decks379 decks
5%synergy
Progenitor Mimic
7.4%inclusion28 decks379 decks
3%synergy
Instants
Negate
40%inclusion153 decks379 decks
14%synergy
Double Major
40%inclusion153 decks379 decks
32%synergy
An Offer You Can't Refuse
39%inclusion146 decks379 decks
15%synergy
Pongify
38%inclusion145 decks379 decks
13%synergy
Second Harvest
36%inclusion136 decks379 decks
30%synergy
Arcane Denial
36%inclusion135 decks379 decks
13%synergy
Return of the Wildspeaker
33%inclusion125 decks379 decks
23%synergy
Mana Drain
32%inclusion123 decks379 decks
17%synergy
Rapid Hybridization
32%inclusion122 decks379 decks
6%synergy
Swan Song
27%inclusion101 decks379 decks
7%synergy
Reality Shift
23%inclusion86 decks379 decks
8%synergy
Krosan Grip
20%inclusion74 decks379 decks
12%synergy
Simic Charm
19%inclusion72 decks379 decks
11%synergy
Nature's Claim
16%inclusion60 decks379 decks
6%synergy
Voidslime
16%inclusion59 decks379 decks
10%synergy
Brainstorm
15%inclusion57 decks379 decks
1%synergy
Harrow
15%inclusion56 decks379 decks
3%synergy
Plasm Capture
15%inclusion55 decks379 decks
11%synergy
Sink into Stupor
15%inclusion55 decks379 decks
3%synergy
Planar Genesis
14%inclusion54 decks379 decks
3%synergy
Tamiyo's Safekeeping
14%inclusion54 decks379 decks
9%synergy
Stubborn Denial
13%inclusion49 decks379 decks
10%synergy
Snakeskin Veil
13%inclusion49 decks379 decks
7%synergy
Aetherize
12%inclusion46 decks379 decks
0%synergy
Return to Nature
12%inclusion44 decks379 decks
6%synergy
Entish Restoration
10%inclusion37 decks379 decks
0%synergy
Eureka Moment
9.5%inclusion36 decks379 decks
-1%synergy
Tyvar's Stand
9.2%inclusion35 decks379 decks
7%synergy
Mystic Reflection
9.2%inclusion35 decks379 decks
7%synergy
Perplexing Test
9.0%inclusion34 decks379 decks
4%synergy
Collective Resistance
9.0%inclusion34 decks379 decks
5%synergy
Disallow
8.7%inclusion33 decks379 decks
7%synergy
Chord of Calling
8.7%inclusion33 decks379 decks
1%synergy
Force of Negation
8.4%inclusion32 decks379 decks
0%synergy
Resculpt
8.2%inclusion31 decks379 decks
2%synergy
Slip Out the Back
8.2%inclusion31 decks379 decks
5%synergy
Archdruid's Charm
8.2%inclusion31 decks379 decks
2%synergy
Decisive Denial
7.9%inclusion30 decks379 decks
3%synergy
Auroral Procession
7.6%inclusion25 decks328 decks
4%synergy
Sublime Epiphany
7.4%inclusion28 decks379 decks
5%synergy
Fog
6.9%inclusion26 decks379 decks
4%synergy
Lazotep Plating
6.9%inclusion26 decks379 decks
6%synergy
Noxious Revival
6.3%inclusion24 decks379 decks
0%synergy
Pact of Negation
6.3%inclusion24 decks379 decks
-1%synergy
Refute
5.6%inclusion21 decks376 decks
4%synergy
Three Steps Ahead
5.3%inclusion20 decks379 decks
2%synergy
Opt
5.0%inclusion19 decks379 decks
-2%synergy
Joint Exploration
5.0%inclusion19 decks379 decks
-1%synergy
Force of Vigor
5.0%inclusion19 decks379 decks
0%synergy
Cackling Counterpart
5.0%inclusion19 decks379 decks
2%synergy
Sorceries
Three Visits
50%inclusion189 decks379 decks
27%synergy
Skyshroud Claim
37%inclusion141 decks379 decks
28%synergy
Overwhelming Stampede
27%inclusion101 decks379 decks
14%synergy
Quantum Misalignment
26%inclusion100 decks379 decks
24%synergy
Explore
24%inclusion92 decks379 decks
4%synergy
Migration Path
17%inclusion63 decks379 decks
13%synergy
Rite of Replication
16%inclusion59 decks379 decks
8%synergy
Shamanic Revelation
13%inclusion51 decks379 decks
8%synergy
Urban Evolution
13%inclusion48 decks379 decks
3%synergy
Bala Ged Recovery
13%inclusion48 decks379 decks
3%synergy
Rishkar's Expertise
12%inclusion46 decks379 decks
4%synergy
Ponder
11%inclusion42 decks379 decks
4%synergy
Harmonize
11%inclusion41 decks379 decks
5%synergy
Triumph of the Hordes
11%inclusion40 decks379 decks
8%synergy
Finale of Devastation
11%inclusion40 decks379 decks
-1%synergy
Explosive Vegetation
10%inclusion39 decks379 decks
5%synergy
Sea Gate Restoration
10%inclusion37 decks379 decks
4%synergy
Preordain
8.7%inclusion33 decks379 decks
1%synergy
Curse of the Swine
8.4%inclusion32 decks379 decks
-2%synergy
Distant Melody
8.4%inclusion32 decks379 decks
5%synergy
Search for Tomorrow
7.7%inclusion29 decks379 decks
3%synergy
Regrowth
7.7%inclusion29 decks379 decks
4%synergy
Windfall
7.4%inclusion28 decks379 decks
3%synergy
Into the North
6.3%inclusion24 decks379 decks
5%synergy
Overrun
6.1%inclusion23 decks379 decks
4%synergy
Raise the Palisade
6.1%inclusion23 decks379 decks
0%synergy
Bridgeworks Battle
6.1%inclusion23 decks379 decks
1%synergy
Tempt with Discovery
5.8%inclusion22 decks379 decks
2%synergy
Green Sun's Zenith
5.5%inclusion21 decks379 decks
-3%synergy
Ezuri's Predation
5.5%inclusion21 decks379 decks
-2%synergy
Flare of Cultivation
5.3%inclusion20 decks379 decks
3%synergy
Ember Island Production
5.0%inclusion6 decks119 decks
4%synergy
Circuitous Route
5.0%inclusion19 decks379 decks
3%synergy
Broken Bond
5.0%inclusion19 decks379 decks
0%synergy
Utility Artifacts
Lightning Greaves
43%inclusion164 decks379 decks
22%synergy
Helm of the Host
39%inclusion148 decks379 decks
34%synergy
Swiftfoot Boots
38%inclusion143 decks379 decks
12%synergy
Combine Chrysalis
25%inclusion95 decks379 decks
21%synergy
Mirror Box
17%inclusion66 decks379 decks
14%synergy
Emerald Medallion
15%inclusion55 decks379 decks
12%synergy
Eldrazi Monument
10%inclusion39 decks379 decks
10%synergy
Bident of Thassa
10%inclusion39 decks379 decks
3%synergy
Sapphire Medallion
10%inclusion37 decks379 decks
7%synergy
Idol of Oblivion
9.2%inclusion35 decks379 decks
6%synergy
The Great Henge
8.7%inclusion33 decks379 decks
0%synergy
Coat of Arms
7.1%inclusion27 decks379 decks
6%synergy
Banner of Kinship
5.1%inclusion19 decks376 decks
3%synergy
Enchantments
Doubling Season
51%inclusion192 decks379 decks
41%synergy
Tribute to the World Tree
45%inclusion171 decks379 decks
39%synergy
Kindred Discovery
33%inclusion124 decks379 decks
23%synergy
Mystic Remora
26%inclusion100 decks379 decks
11%synergy
Primal Vigor
21%inclusion79 decks379 decks
18%synergy
Cryptolith Rite
19%inclusion71 decks379 decks
16%synergy
Growing Rites of Itlimoc
18%inclusion69 decks379 decks
12%synergy
Garruk's Uprising
17%inclusion65 decks379 decks
1%synergy
Wild Growth
15%inclusion57 decks379 decks
6%synergy
Paradox Haze
15%inclusion55 decks379 decks
14%synergy
Utopia Sprawl
13%inclusion49 decks379 decks
6%synergy
Beastmaster Ascension
13%inclusion48 decks379 decks
10%synergy
Exploration
12%inclusion47 decks379 decks
-1%synergy
Propaganda
12%inclusion46 decks379 decks
5%synergy
Extravagant Replication
11%inclusion41 decks379 decks
8%synergy
Defense of the Heart
11%inclusion41 decks379 decks
9%synergy
Imprisoned in the Moon
11%inclusion40 decks379 decks
6%synergy
Wilderness Reclamation
10%inclusion39 decks379 decks
1%synergy
Sylvan Library
10%inclusion39 decks379 decks
1%synergy
Unnatural Growth
10%inclusion37 decks379 decks
6%synergy
Moonlit Meditation
8.7%inclusion20 decks231 decks
7%synergy
Kenrith's Transformation
7.7%inclusion29 decks379 decks
3%synergy
Asceticism
7.1%inclusion27 decks379 decks
4%synergy
Impostor Syndrome
7.0%inclusion13 decks187 decks
5%synergy
Ominous Seas
6.3%inclusion24 decks379 decks
2%synergy
Burgeoning
6.3%inclusion24 decks379 decks
-1%synergy
Opposition
5.8%inclusion22 decks379 decks
5%synergy
Dismiss into Dream
5.8%inclusion22 decks379 decks
6%synergy
Verity Circle
5.5%inclusion21 decks379 decks
5%synergy
Planeswalkers
Oko, Thief of Crowns
21%inclusion79 decks379 decks
14%synergy
Kiora, the Crashing Wave
7.4%inclusion28 decks379 decks
5%synergy
Utility Lands
Reliquary Tower
62%inclusion234 decks379 decks
12%synergy
Temple of the False God
22%inclusion82 decks379 decks
6%synergy
Yavimaya, Cradle of Growth
22%inclusion82 decks379 decks
-1%synergy
Boseiju, Who Endures
20%inclusion77 decks379 decks
-2%synergy
Mosswort Bridge
19%inclusion71 decks379 decks
1%synergy
Otawara, Soaring City
18%inclusion68 decks379 decks
-1%synergy
Command Beacon
17%inclusion66 decks379 decks
13%synergy
Mistrise Village
17%inclusion56 decks328 decks
6%synergy
Alchemist's Refuge
16%inclusion62 decks379 decks
-1%synergy
Rogue's Passage
16%inclusion61 decks379 decks
-6%synergy
Mystic Sanctuary
16%inclusion61 decks379 decks
4%synergy
Castle Garenbrig
15%inclusion55 decks379 decks
10%synergy
Three Tree City
12%inclusion46 decks378 decks
7%synergy
Evendo, Waking Haven
10%inclusion24 decks233 decks
5%synergy
Castle Vantress
8.2%inclusion31 decks379 decks
1%synergy
Lumbering Falls
6.9%inclusion26 decks379 decks
0%synergy
Restless Vinestalk
6.3%inclusion24 decks379 decks
1%synergy
Scavenger Grounds
5.3%inclusion20 decks379 decks
1%synergy
Mana Artifacts
Sol Ring
93%inclusion351 decks379 decks
12%synergy
Arcane Signet
75%inclusion286 decks379 decks
13%synergy
Simic Signet
37%inclusion142 decks379 decks
6%synergy
Thought Vessel
37%inclusion141 decks379 decks
17%synergy
Talisman of Curiosity
30%inclusion114 decks379 decks
8%synergy
Fellwar Stone
13%inclusion49 decks379 decks
3%synergy
Commander's Sphere
10%inclusion38 decks379 decks
2%synergy
Decanter of Endless Water
6.6%inclusion25 decks379 decks
1%synergy
Thran Dynamo
6.6%inclusion25 decks379 decks
4%synergy
Mind Stone
6.3%inclusion24 decks379 decks
2%synergy
Lands
Island
94%inclusion357 decks379 decks
-1%synergy
Forest
93%inclusion354 decks379 decks
-2%synergy
Command Tower
91%inclusion344 decks379 decks
5%synergy
Hinterland Harbor
65%inclusion247 decks379 decks
6%synergy
Breeding Pool
58%inclusion221 decks379 decks
12%synergy
Yavimaya Coast
57%inclusion217 decks379 decks
5%synergy
Rejuvenating Springs
55%inclusion208 decks379 decks
11%synergy
Flooded Grove
50%inclusion189 decks379 decks
9%synergy
Simic Growth Chamber
50%inclusion188 decks379 decks
1%synergy
Dreamroot Cascade
48%inclusion181 decks379 decks
6%synergy
Misty Rainforest
41%inclusion154 decks379 decks
9%synergy
Vineglimmer Snarl
37%inclusion141 decks379 decks
-1%synergy
Temple of Mystery
37%inclusion141 decks379 decks
-1%synergy
Barkchannel Pathway
34%inclusion128 decks379 decks
14%synergy
Waterlogged Grove
28%inclusion106 decks379 decks
7%synergy
Exotic Orchard
27%inclusion102 decks379 decks
3%synergy
Evolving Wilds
26%inclusion97 decks379 decks
0%synergy
Hedge Maze
25%inclusion93 decks379 decks
5%synergy
Myriad Landscape
22%inclusion84 decks379 decks
0%synergy
Thornwood Falls
21%inclusion81 decks379 decks
4%synergy
Willowrush Verge
21%inclusion77 decks370 decks
4%synergy
Tangled Islet
20%inclusion77 decks379 decks
4%synergy
Rimewood Falls
19%inclusion73 decks379 decks
10%synergy
Terramorphic Expanse
17%inclusion66 decks379 decks
-2%synergy
Botanical Sanctum
17%inclusion64 decks379 decks
4%synergy
Overflowing Basin
16%inclusion61 decks379 decks
-3%synergy
Fabled Passage
16%inclusion59 decks379 decks
1%synergy
Sink into Stupor
15%inclusion55 decks379 decks
3%synergy
Tropical Island
14%inclusion54 decks379 decks
0%synergy
Path of Ancestry
14%inclusion52 decks379 decks
-3%synergy
Snow-Covered Island
13%inclusion51 decks379 decks
7%synergy
Snow-Covered Forest
13%inclusion51 decks379 decks
7%synergy
Bala Ged Recovery
13%inclusion48 decks379 decks
3%synergy
Glasspool Mimic
11%inclusion42 decks379 decks
7%synergy
Simic Guildgate
11%inclusion41 decks379 decks
1%synergy
Sea Gate Restoration
10%inclusion37 decks379 decks
4%synergy
Littjara Mirrorlake
8.2%inclusion31 decks379 decks
4%synergy
Blighted Woodland
8.2%inclusion31 decks379 decks
1%synergy
Windswept Heath
7.7%inclusion29 decks379 decks
-3%synergy
Flooded Strand
7.7%inclusion29 decks379 decks
-4%synergy
Prismatic Vista
7.4%inclusion28 decks379 decks
0%synergy
Polluted Delta
7.1%inclusion27 decks379 decks
-3%synergy
Scalding Tarn
7.1%inclusion27 decks379 decks
-3%synergy
Verdant Catacombs
6.9%inclusion26 decks379 decks
-3%synergy
Quandrix Campus
6.3%inclusion24 decks379 decks
0%synergy
Wooded Foothills
6.3%inclusion24 decks379 decks
-3%synergy
Bridgeworks Battle
6.1%inclusion23 decks379 decks
1%synergy
Woodland Stream
6.1%inclusion23 decks379 decks
1%synergy
Disciple of Freyalise
5.0%inclusion19 decks379 decks
0%synergy
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