Koma, Cosmos Serpent (Commander) - Expensive

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #299
674decks
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%inclusion6 decks59 decks
5%synergy
Badgermole Cub
8.1%inclusion5 decks62 decks
3%synergy
Shared Roots
6.9%inclusion4 decks58 decks
4%synergy
Wan Shi Tong, Librarian
6.5%inclusion4 decks62 decks
1%synergy
Ember Island Production
3.6%inclusion2 decks55 decks
3%synergy
High Synergy Cards
Parallel Lives
82%inclusion551 decks674 decks
76%synergy
Sakashima of a Thousand Faces
79%inclusion530 decks674 decks
74%synergy
Adrix and Nev, Twincasters
82%inclusion553 decks674 decks
74%synergy
Elemental Bond
78%inclusion529 decks674 decks
73%synergy
Mana Drain
82%inclusion553 decks674 decks
66%synergy
Spark Double
73%inclusion491 decks674 decks
63%synergy
Doubling Season
70%inclusion472 decks674 decks
60%synergy
Whelming Wave
68%inclusion456 decks674 decks
56%synergy
Sakashima the Impostor
55%inclusion370 decks674 decks
52%synergy
Serpent of Yawning Depths
57%inclusion386 decks674 decks
51%synergy
Top Cards
Birds of Paradise
76%inclusion511 decks674 decks
48%synergy
Heroic Intervention
74%inclusion500 decks674 decks
44%synergy
Nature's Lore
68%inclusion459 decks674 decks
38%synergy
Three Visits
68%inclusion456 decks674 decks
45%synergy
Counterspell
66%inclusion448 decks674 decks
16%synergy
Cultivate
66%inclusion443 decks674 decks
19%synergy
Koma, World-Eater
61%inclusion272 decks448 decks
47%synergy
Beast Within
60%inclusion407 decks674 decks
10%synergy
Kodama's Reach
60%inclusion405 decks674 decks
24%synergy
Swan Song
60%inclusion402 decks674 decks
41%synergy
Game Changers
Gaea's Cradle
89%inclusion599 decks674 decks
82%synergy
Cyclonic Rift
84%inclusion569 decks674 decks
58%synergy
Rhystic Study
82%inclusion552 decks674 decks
60%synergy
Fierce Guardianship
76%inclusion515 decks674 decks
59%synergy
Ancient Tomb
59%inclusion401 decks674 decks
50%synergy
Force of Will
55%inclusion369 decks674 decks
45%synergy
Worldly Tutor
52%inclusion352 decks674 decks
37%synergy
Seedborn Muse
45%inclusion301 decks674 decks
29%synergy
Consecrated Sphinx
45%inclusion301 decks674 decks
36%synergy
Mystical Tutor
40%inclusion268 decks674 decks
30%synergy
Creatures
Craterhoof Behemoth
59%inclusion399 decks674 decks
50%synergy
Llanowar Elves
53%inclusion360 decks674 decks
26%synergy
Junk Winder
53%inclusion359 decks674 decks
47%synergy
Aesi, Tyrant of Gyre Strait
53%inclusion354 decks674 decks
35%synergy
Roaming Throne
50%inclusion335 decks674 decks
42%synergy
Spawning Kraken
49%inclusion330 decks674 decks
42%synergy
Elvish Mystic
43%inclusion290 decks674 decks
19%synergy
Fyndhorn Elves
39%inclusion262 decks674 decks
23%synergy
Enduring Vitality
37%inclusion184 decks503 decks
29%synergy
Delighted Halfling
33%inclusion223 decks674 decks
22%synergy
Ohran Frostfang
31%inclusion208 decks674 decks
27%synergy
Eternal Witness
31%inclusion206 decks674 decks
9%synergy
Hullbreaker Horror
30%inclusion204 decks674 decks
13%synergy
Arixmethes, Slumbering Isle
30%inclusion200 decks674 decks
16%synergy
Fanatic of Rhonas
28%inclusion158 decks564 decks
22%synergy
Sakura-Tribe Elder
27%inclusion182 decks674 decks
8%synergy
Murkfiend Liege
27%inclusion181 decks674 decks
12%synergy
Garruk's Packleader
26%inclusion173 decks674 decks
23%synergy
Tatyova, Benthic Druid
24%inclusion159 decks674 decks
-8%synergy
Summon: Leviathan
22%inclusion48 decks219 decks
15%synergy
Esix, Fractal Bloom
20%inclusion138 decks674 decks
17%synergy
Octomancer
19%inclusion98 decks525 decks
14%synergy
Toski, Bearer of Secrets
16%inclusion107 decks674 decks
12%synergy
Archetype of Imagination
16%inclusion107 decks674 decks
12%synergy
Kinnan, Bonder Prodigy
16%inclusion105 decks674 decks
12%synergy
Azusa, Lost but Seeking
15%inclusion102 decks674 decks
1%synergy
Enduring Curiosity
14%inclusion71 decks507 decks
11%synergy
Circle of Dreams Druid
14%inclusion94 decks674 decks
12%synergy
Chameleon, Master of Disguise
14%inclusion16 decks115 decks
11%synergy
Slinn Voda, the Rising Deep
14%inclusion92 decks674 decks
7%synergy
Phyrexian Metamorph
14%inclusion91 decks674 decks
5%synergy
Scute Swarm
13%inclusion90 decks674 decks
-8%synergy
Curiosity Crafter
13%inclusion85 decks674 decks
9%synergy
Saryth, the Viper's Fang
12%inclusion83 decks674 decks
11%synergy
Nezahal, Primal Tide
12%inclusion82 decks674 decks
1%synergy
Avenger of Zendikar
12%inclusion79 decks674 decks
-6%synergy
Uro, Titan of Nature's Wrath
12%inclusion79 decks674 decks
2%synergy
Clever Impersonator
11%inclusion74 decks674 decks
6%synergy
Auton Soldier
11%inclusion72 decks674 decks
8%synergy
Bloom Tender
10%inclusion68 decks674 decks
6%synergy
Jaheira, Friend of the Forest
10%inclusion66 decks674 decks
6%synergy
Reclamation Sage
9.3%inclusion63 decks674 decks
-5%synergy
Lotus Cobra
9.3%inclusion63 decks674 decks
-4%synergy
Arbor Elf
9.2%inclusion62 decks674 decks
3%synergy
Glasspool Mimic
9.1%inclusion61 decks674 decks
5%synergy
Selvala, Heart of the Wilds
8.6%inclusion58 decks674 decks
5%synergy
Starwinder
8.6%inclusion13 decks152 decks
2%synergy
Progenitor Mimic
8.5%inclusion57 decks674 decks
4%synergy
Nyxbloom Ancient
8.2%inclusion55 decks674 decks
1%synergy
Coiling Oracle
8.2%inclusion55 decks674 decks
-5%synergy
Instants
Pongify
45%inclusion302 decks674 decks
20%synergy
An Offer You Can't Refuse
44%inclusion297 decks674 decks
21%synergy
Force of Negation
43%inclusion291 decks674 decks
35%synergy
Double Major
43%inclusion289 decks674 decks
34%synergy
Growth Spiral
38%inclusion257 decks674 decks
-6%synergy
Second Harvest
33%inclusion225 decks674 decks
27%synergy
Rapid Hybridization
30%inclusion204 decks674 decks
4%synergy
Arcane Denial
30%inclusion201 decks674 decks
7%synergy
Negate
28%inclusion186 decks674 decks
2%synergy
Pact of Negation
25%inclusion170 decks674 decks
18%synergy
Return of the Wildspeaker
22%inclusion150 decks674 decks
12%synergy
Chord of Calling
22%inclusion150 decks674 decks
15%synergy
Krosan Grip
18%inclusion124 decks674 decks
10%synergy
Force of Vigor
18%inclusion124 decks674 decks
14%synergy
Sink into Stupor
18%inclusion103 decks568 decks
7%synergy
Nature's Claim
18%inclusion118 decks674 decks
8%synergy
Crop Rotation
16%inclusion110 decks674 decks
3%synergy
Noxious Revival
15%inclusion104 decks674 decks
9%synergy
Archdruid's Charm
15%inclusion99 decks656 decks
9%synergy
Brainstorm
14%inclusion97 decks674 decks
0%synergy
Flusterstorm
14%inclusion94 decks674 decks
7%synergy
Reality Shift
14%inclusion92 decks674 decks
-1%synergy
Voidslime
11%inclusion72 decks674 decks
6%synergy
Mystic Reflection
10%inclusion70 decks674 decks
8%synergy
Tamiyo's Safekeeping
10%inclusion70 decks674 decks
5%synergy
Disallow
10%inclusion69 decks674 decks
9%synergy
Strix Serenade
10%inclusion58 decks568 decks
6%synergy
Veil of Summer
9.3%inclusion63 decks674 decks
3%synergy
Mental Misstep
8.0%inclusion54 decks674 decks
3%synergy
Resculpt
7.7%inclusion52 decks674 decks
2%synergy
Simic Charm
7.4%inclusion50 decks674 decks
-1%synergy
Legolas's Quick Reflexes
7.3%inclusion49 decks674 decks
5%synergy
Harrow
7.3%inclusion49 decks674 decks
-5%synergy
Mindbreak Trap
7.3%inclusion49 decks674 decks
2%synergy
Planar Genesis
6.8%inclusion38 decks561 decks
-4%synergy
Narset's Reversal
6.5%inclusion44 decks674 decks
5%synergy
Aetherize
6.4%inclusion43 decks674 decks
-5%synergy
Entish Restoration
5.9%inclusion40 decks674 decks
-4%synergy
Stubborn Denial
5.9%inclusion40 decks674 decks
3%synergy
Sublime Epiphany
5.9%inclusion40 decks674 decks
4%synergy
Dispel
5.6%inclusion38 decks674 decks
1%synergy
Muddle the Mixture
5.3%inclusion36 decks674 decks
1%synergy
Sorceries
Irenicus's Vile Duplication
57%inclusion382 decks674 decks
50%synergy
Rampant Growth
52%inclusion353 decks674 decks
12%synergy
Farseek
50%inclusion340 decks674 decks
26%synergy
Finale of Devastation
39%inclusion263 decks674 decks
27%synergy
Skyshroud Claim
38%inclusion257 decks674 decks
29%synergy
Quantum Misalignment
33%inclusion220 decks674 decks
30%synergy
Triumph of the Hordes
24%inclusion161 decks674 decks
21%synergy
Green Sun's Zenith
20%inclusion136 decks674 decks
11%synergy
Overwhelming Stampede
18%inclusion120 decks674 decks
6%synergy
Sea Gate Restoration
16%inclusion109 decks674 decks
11%synergy
Rite of Replication
16%inclusion108 decks674 decks
9%synergy
Explore
15%inclusion104 decks674 decks
-5%synergy
Bala Ged Recovery
14%inclusion92 decks674 decks
4%synergy
Distant Melody
11%inclusion72 decks674 decks
7%synergy
Rishkar's Expertise
10%inclusion68 decks674 decks
2%synergy
Windfall
10%inclusion65 decks674 decks
6%synergy
Shamanic Revelation
8.9%inclusion60 decks674 decks
4%synergy
Ponder
8.3%inclusion56 decks674 decks
1%synergy
Natural Order
7.1%inclusion48 decks674 decks
6%synergy
Fabricate
6.5%inclusion44 decks674 decks
0%synergy
Doppelgang
6.2%inclusion41 decks657 decks
0%synergy
Regrowth
6.2%inclusion42 decks674 decks
2%synergy
Explosive Vegetation
6.1%inclusion41 decks674 decks
0%synergy
Migration Path
5.9%inclusion40 decks674 decks
3%synergy
Sylvan Tutor
5.6%inclusion38 decks674 decks
4%synergy
Curse of the Swine
5.5%inclusion37 decks674 decks
-5%synergy
Expropriate
5.3%inclusion36 decks674 decks
4%synergy
Utility Artifacts
Lightning Greaves
51%inclusion342 decks674 decks
29%synergy
Helm of the Host
47%inclusion319 decks674 decks
42%synergy
Swiftfoot Boots
32%inclusion215 decks674 decks
6%synergy
The One Ring
31%inclusion206 decks674 decks
23%synergy
The Great Henge
28%inclusion186 decks674 decks
19%synergy
Mirror Box
16%inclusion111 decks674 decks
13%synergy
Combine Chrysalis
16%inclusion108 decks674 decks
12%synergy
Coat of Arms
14%inclusion93 decks674 decks
12%synergy
Eldrazi Monument
13%inclusion86 decks674 decks
12%synergy
Emerald Medallion
11%inclusion74 decks674 decks
8%synergy
Sapphire Medallion
9.1%inclusion61 decks674 decks
6%synergy
Skullclamp
8.6%inclusion58 decks674 decks
7%synergy
Winter Orb
8.2%inclusion55 decks674 decks
8%synergy
Static Orb
6.4%inclusion43 decks674 decks
6%synergy
Bident of Thassa
5.6%inclusion38 decks674 decks
-2%synergy
Sensei's Divining Top
5.6%inclusion38 decks674 decks
2%synergy
Enchantments
Tribute to the World Tree
56%inclusion379 decks674 decks
50%synergy
Mystic Remora
47%inclusion317 decks674 decks
32%synergy
Sylvan Library
41%inclusion274 decks674 decks
31%synergy
Kindred Discovery
35%inclusion234 decks674 decks
25%synergy
Exploration
26%inclusion173 decks674 decks
12%synergy
Cryptolith Rite
22%inclusion151 decks674 decks
19%synergy
Growing Rites of Itlimoc
20%inclusion137 decks674 decks
14%synergy
Burgeoning
19%inclusion131 decks674 decks
12%synergy
Primal Vigor
18%inclusion118 decks674 decks
14%synergy
Wild Growth
17%inclusion112 decks674 decks
8%synergy
Utopia Sprawl
16%inclusion107 decks674 decks
9%synergy
Defense of the Heart
15%inclusion104 decks674 decks
13%synergy
Beastmaster Ascension
15%inclusion101 decks674 decks
12%synergy
Paradox Haze
14%inclusion92 decks674 decks
13%synergy
Carpet of Flowers
13%inclusion90 decks674 decks
11%synergy
Moonlit Meditation
8.3%inclusion13 decks156 decks
7%synergy
Unnatural Growth
8.3%inclusion56 decks674 decks
5%synergy
Garruk's Uprising
7.9%inclusion53 decks674 decks
-8%synergy
Opposition
7.9%inclusion53 decks674 decks
7%synergy
Extravagant Replication
7.3%inclusion49 decks674 decks
5%synergy
Propaganda
7.1%inclusion48 decks674 decks
0%synergy
Kenrith's Transformation
6.8%inclusion46 decks674 decks
2%synergy
Asceticism
6.7%inclusion45 decks674 decks
3%synergy
Dismiss into Dream
6.5%inclusion44 decks674 decks
6%synergy
Imprisoned in the Moon
6.1%inclusion41 decks674 decks
2%synergy
Impostor Syndrome
6.0%inclusion7 decks117 decks
4%synergy
Wilderness Reclamation
5.0%inclusion34 decks674 decks
-4%synergy
Battles
Invasion of Ikoria
7.7%inclusion52 decks674 decks
3%synergy
Planeswalkers
Oko, Thief of Crowns
35%inclusion233 decks674 decks
27%synergy
Utility Lands
Boseiju, Who Endures
67%inclusion452 decks674 decks
45%synergy
Reliquary Tower
64%inclusion430 decks674 decks
14%synergy
Yavimaya, Cradle of Growth
60%inclusion405 decks674 decks
38%synergy
Otawara, Soaring City
56%inclusion380 decks674 decks
37%synergy
Three Tree City
37%inclusion197 decks531 decks
32%synergy
Command Beacon
31%inclusion208 decks674 decks
27%synergy
Mistrise Village
29%inclusion84 decks292 decks
18%synergy
Evendo, Waking Haven
25%inclusion39 decks159 decks
19%synergy
Castle Garenbrig
19%inclusion129 decks674 decks
15%synergy
Urza's Saga
18%inclusion121 decks674 decks
12%synergy
Mystic Sanctuary
16%inclusion110 decks674 decks
4%synergy
Alchemist's Refuge
16%inclusion106 decks674 decks
-2%synergy
Minamo, School at Water's Edge
14%inclusion91 decks674 decks
7%synergy
Temple of the False God
11%inclusion75 decks674 decks
-4%synergy
Mosswort Bridge
11%inclusion73 decks674 decks
-7%synergy
Nykthos, Shrine to Nyx
10%inclusion69 decks674 decks
7%synergy
Rogue's Passage
10%inclusion67 decks674 decks
-12%synergy
Strip Mine
9.2%inclusion62 decks674 decks
6%synergy
Dryad Arbor
7.7%inclusion52 decks674 decks
2%synergy
Shifting Woodland
7.4%inclusion42 decks566 decks
1%synergy
Field of the Dead
7.0%inclusion47 decks674 decks
1%synergy
Wasteland
5.6%inclusion38 decks674 decks
4%synergy
Homeward Path
5.5%inclusion37 decks674 decks
3%synergy
Mana Artifacts
Sol Ring
96%inclusion644 decks674 decks
15%synergy
Arcane Signet
81%inclusion548 decks674 decks
18%synergy
Talisman of Curiosity
38%inclusion255 decks674 decks
16%synergy
Simic Signet
36%inclusion245 decks674 decks
4%synergy
Mana Vault
35%inclusion238 decks674 decks
29%synergy
Thought Vessel
34%inclusion226 decks674 decks
13%synergy
Chrome Mox
23%inclusion153 decks674 decks
16%synergy
Mox Diamond
17%inclusion116 decks674 decks
12%synergy
Mana Crypt
17%inclusion114 decks674 decks
14%synergy
Jeweled Lotus
16%inclusion108 decks674 decks
14%synergy
Fellwar Stone
15%inclusion101 decks674 decks
5%synergy
Lotus Petal
14%inclusion97 decks674 decks
7%synergy
Grim Monolith
11%inclusion75 decks674 decks
8%synergy
Mox Opal
10%inclusion67 decks674 decks
5%synergy
Basalt Monolith
8.3%inclusion56 decks674 decks
1%synergy
Decanter of Endless Water
5.9%inclusion40 decks674 decks
1%synergy
Patchwork Banner
5.9%inclusion31 decks527 decks
2%synergy
Thran Dynamo
5.3%inclusion36 decks674 decks
3%synergy
Lands
Command Tower
92%inclusion623 decks674 decks
7%synergy
Forest
91%inclusion615 decks674 decks
-4%synergy
Island
91%inclusion612 decks674 decks
-5%synergy
Breeding Pool
91%inclusion610 decks674 decks
45%synergy
Rejuvenating Springs
80%inclusion536 decks674 decks
36%synergy
Misty Rainforest
79%inclusion534 decks674 decks
48%synergy
Tropical Island
78%inclusion526 decks674 decks
64%synergy
Hinterland Harbor
62%inclusion416 decks674 decks
2%synergy
Yavimaya Coast
55%inclusion370 decks674 decks
3%synergy
Dreamroot Cascade
50%inclusion338 decks674 decks
8%synergy
Barkchannel Pathway
46%inclusion312 decks674 decks
26%synergy
Flooded Grove
39%inclusion266 decks674 decks
-1%synergy
Waterlogged Grove
35%inclusion235 decks674 decks
14%synergy
Simic Growth Chamber
32%inclusion217 decks674 decks
-16%synergy
Flooded Strand
31%inclusion206 decks674 decks
19%synergy
Windswept Heath
30%inclusion205 decks674 decks
20%synergy
Hedge Maze
30%inclusion200 decks658 decks
11%synergy
Verdant Catacombs
30%inclusion201 decks674 decks
20%synergy
Prismatic Vista
30%inclusion199 decks674 decks
22%synergy
Polluted Delta
28%inclusion192 decks674 decks
18%synergy
Willowrush Verge
28%inclusion100 decks353 decks
12%synergy
Scalding Tarn
28%inclusion186 decks674 decks
18%synergy
Wooded Foothills
25%inclusion170 decks674 decks
16%synergy
Exotic Orchard
21%inclusion142 decks674 decks
-3%synergy
Fabled Passage
21%inclusion141 decks674 decks
6%synergy
Vineglimmer Snarl
19%inclusion128 decks674 decks
-20%synergy
Sink into Stupor
18%inclusion103 decks568 decks
7%synergy
Mana Confluence
18%inclusion120 decks674 decks
12%synergy
Temple of Mystery
16%inclusion109 decks674 decks
-22%synergy
Sea Gate Restoration
16%inclusion109 decks674 decks
11%synergy
City of Brass
16%inclusion108 decks674 decks
10%synergy
Snow-Covered Island
14%inclusion97 decks674 decks
8%synergy
Snow-Covered Forest
14%inclusion95 decks674 decks
7%synergy
Bala Ged Recovery
14%inclusion92 decks674 decks
4%synergy
Gemstone Caverns
13%inclusion89 decks674 decks
7%synergy
Myriad Landscape
13%inclusion88 decks674 decks
-9%synergy
Reflecting Pool
11%inclusion71 decks674 decks
7%synergy
Botanical Sanctum
10%inclusion70 decks674 decks
-2%synergy
Cavern of Souls
10%inclusion68 decks674 decks
4%synergy
Rimewood Falls
10%inclusion67 decks674 decks
1%synergy
Glasspool Mimic
9.1%inclusion61 decks674 decks
5%synergy
Tangled Islet
8.6%inclusion58 decks674 decks
-8%synergy
Overflowing Basin
8.5%inclusion54 decks633 decks
-11%synergy
Evolving Wilds
7.0%inclusion47 decks674 decks
-18%synergy
Thornwood Falls
5.5%inclusion37 decks674 decks
-12%synergy
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