Koma, Cosmos Serpent (Commander) - Expensive

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #299
673decks
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
8.8%inclusion5 decks57 decks
4%synergy
Shared Roots
7.1%inclusion4 decks56 decks
4%synergy
Wan Shi Tong, Librarian
6.7%inclusion4 decks60 decks
2%synergy
Badgermole Cub
6.7%inclusion4 decks60 decks
2%synergy
Ember Island Production
3.8%inclusion2 decks53 decks
3%synergy
High Synergy Cards
Parallel Lives
81%inclusion548 decks673 decks
76%synergy
Sakashima of a Thousand Faces
78%inclusion528 decks673 decks
73%synergy
Adrix and Nev, Twincasters
82%inclusion551 decks673 decks
73%synergy
Elemental Bond
78%inclusion527 decks673 decks
73%synergy
Mana Drain
82%inclusion554 decks673 decks
67%synergy
Spark Double
73%inclusion490 decks673 decks
63%synergy
Doubling Season
70%inclusion468 decks673 decks
60%synergy
Whelming Wave
67%inclusion452 decks673 decks
56%synergy
Sakashima the Impostor
55%inclusion368 decks673 decks
52%synergy
Serpent of Yawning Depths
57%inclusion383 decks673 decks
51%synergy
Top Cards
Birds of Paradise
76%inclusion509 decks673 decks
48%synergy
Heroic Intervention
74%inclusion498 decks673 decks
44%synergy
Nature's Lore
68%inclusion458 decks673 decks
38%synergy
Three Visits
68%inclusion456 decks673 decks
45%synergy
Counterspell
66%inclusion446 decks673 decks
16%synergy
Cultivate
65%inclusion440 decks673 decks
18%synergy
Koma, World-Eater
60%inclusion268 decks444 decks
47%synergy
Beast Within
60%inclusion406 decks673 decks
10%synergy
Swan Song
60%inclusion403 decks673 decks
41%synergy
Kodama's Reach
60%inclusion402 decks673 decks
23%synergy
Game Changers
Gaea's Cradle
89%inclusion600 decks673 decks
82%synergy
Cyclonic Rift
85%inclusion569 decks673 decks
59%synergy
Rhystic Study
82%inclusion553 decks673 decks
60%synergy
Fierce Guardianship
76%inclusion513 decks673 decks
59%synergy
Ancient Tomb
59%inclusion399 decks673 decks
50%synergy
Force of Will
55%inclusion367 decks673 decks
44%synergy
Worldly Tutor
52%inclusion352 decks673 decks
37%synergy
Seedborn Muse
45%inclusion302 decks673 decks
29%synergy
Consecrated Sphinx
45%inclusion301 decks673 decks
36%synergy
Mystical Tutor
40%inclusion268 decks673 decks
30%synergy
Creatures
Craterhoof Behemoth
59%inclusion396 decks673 decks
49%synergy
Llanowar Elves
53%inclusion360 decks673 decks
26%synergy
Junk Winder
53%inclusion355 decks673 decks
46%synergy
Aesi, Tyrant of Gyre Strait
52%inclusion351 decks673 decks
35%synergy
Roaming Throne
50%inclusion335 decks673 decks
42%synergy
Spawning Kraken
49%inclusion327 decks673 decks
41%synergy
Elvish Mystic
43%inclusion290 decks673 decks
19%synergy
Fyndhorn Elves
39%inclusion261 decks673 decks
23%synergy
Enduring Vitality
37%inclusion183 decks499 decks
29%synergy
Delighted Halfling
33%inclusion224 decks673 decks
22%synergy
Ohran Frostfang
31%inclusion207 decks673 decks
27%synergy
Eternal Witness
30%inclusion204 decks673 decks
9%synergy
Hullbreaker Horror
30%inclusion203 decks673 decks
12%synergy
Arixmethes, Slumbering Isle
29%inclusion197 decks673 decks
16%synergy
Fanatic of Rhonas
28%inclusion157 decks559 decks
22%synergy
Sakura-Tribe Elder
27%inclusion181 decks673 decks
8%synergy
Murkfiend Liege
27%inclusion180 decks673 decks
12%synergy
Garruk's Packleader
25%inclusion170 decks673 decks
23%synergy
Tatyova, Benthic Druid
23%inclusion158 decks673 decks
-8%synergy
Summon: Leviathan
22%inclusion47 decks216 decks
15%synergy
Esix, Fractal Bloom
21%inclusion138 decks673 decks
17%synergy
Octomancer
19%inclusion97 decks521 decks
14%synergy
Toski, Bearer of Secrets
16%inclusion107 decks673 decks
12%synergy
Kinnan, Bonder Prodigy
16%inclusion105 decks673 decks
12%synergy
Archetype of Imagination
16%inclusion105 decks673 decks
11%synergy
Azusa, Lost but Seeking
15%inclusion101 decks673 decks
1%synergy
Circle of Dreams Druid
14%inclusion95 decks673 decks
12%synergy
Enduring Curiosity
14%inclusion69 decks503 decks
10%synergy
Phyrexian Metamorph
14%inclusion92 decks673 decks
5%synergy
Slinn Voda, the Rising Deep
14%inclusion91 decks673 decks
7%synergy
Scute Swarm
14%inclusion91 decks673 decks
-7%synergy
Chameleon, Master of Disguise
13%inclusion15 decks112 decks
11%synergy
Curiosity Crafter
13%inclusion85 decks673 decks
9%synergy
Saryth, the Viper's Fang
12%inclusion84 decks673 decks
11%synergy
Nezahal, Primal Tide
12%inclusion81 decks673 decks
1%synergy
Avenger of Zendikar
12%inclusion80 decks673 decks
-6%synergy
Uro, Titan of Nature's Wrath
12%inclusion79 decks673 decks
2%synergy
Clever Impersonator
11%inclusion75 decks673 decks
6%synergy
Auton Soldier
11%inclusion71 decks673 decks
8%synergy
Bloom Tender
10%inclusion68 decks673 decks
6%synergy
Jaheira, Friend of the Forest
10%inclusion67 decks673 decks
6%synergy
Reclamation Sage
10%inclusion64 decks673 decks
-5%synergy
Lotus Cobra
10%inclusion64 decks673 decks
-4%synergy
Arbor Elf
9.4%inclusion63 decks673 decks
3%synergy
Glasspool Mimic
9.1%inclusion61 decks673 decks
5%synergy
Selvala, Heart of the Wilds
8.6%inclusion58 decks673 decks
5%synergy
Progenitor Mimic
8.5%inclusion57 decks673 decks
4%synergy
Gilded Drake
8.2%inclusion55 decks673 decks
6%synergy
Coiling Oracle
8.2%inclusion55 decks673 decks
-5%synergy
Nyxbloom Ancient
8.2%inclusion55 decks673 decks
1%synergy
Instants
Pongify
45%inclusion304 decks673 decks
20%synergy
An Offer You Can't Refuse
44%inclusion298 decks673 decks
21%synergy
Force of Negation
43%inclusion290 decks673 decks
35%synergy
Double Major
43%inclusion288 decks673 decks
34%synergy
Growth Spiral
38%inclusion255 decks673 decks
-7%synergy
Second Harvest
33%inclusion224 decks673 decks
27%synergy
Rapid Hybridization
31%inclusion207 decks673 decks
5%synergy
Arcane Denial
30%inclusion203 decks673 decks
8%synergy
Negate
28%inclusion187 decks673 decks
2%synergy
Pact of Negation
25%inclusion170 decks673 decks
18%synergy
Return of the Wildspeaker
22%inclusion151 decks673 decks
12%synergy
Chord of Calling
22%inclusion149 decks673 decks
14%synergy
Krosan Grip
19%inclusion126 decks673 decks
11%synergy
Force of Vigor
18%inclusion123 decks673 decks
14%synergy
Sink into Stupor
18%inclusion102 decks563 decks
7%synergy
Nature's Claim
18%inclusion119 decks673 decks
8%synergy
Crop Rotation
16%inclusion111 decks673 decks
3%synergy
Noxious Revival
16%inclusion105 decks673 decks
10%synergy
Archdruid's Charm
15%inclusion98 decks651 decks
9%synergy
Brainstorm
15%inclusion99 decks673 decks
0%synergy
Flusterstorm
14%inclusion95 decks673 decks
7%synergy
Reality Shift
14%inclusion93 decks673 decks
-1%synergy
Voidslime
11%inclusion72 decks673 decks
6%synergy
Mystic Reflection
11%inclusion71 decks673 decks
8%synergy
Disallow
10%inclusion70 decks673 decks
9%synergy
Tamiyo's Safekeeping
10%inclusion70 decks673 decks
5%synergy
Strix Serenade
10%inclusion58 decks563 decks
7%synergy
Veil of Summer
9.4%inclusion63 decks673 decks
3%synergy
Mental Misstep
8.0%inclusion54 decks673 decks
3%synergy
Resculpt
7.9%inclusion53 decks673 decks
2%synergy
Legolas's Quick Reflexes
7.6%inclusion51 decks673 decks
5%synergy
Simic Charm
7.6%inclusion51 decks673 decks
0%synergy
Harrow
7.4%inclusion50 decks673 decks
-4%synergy
Mindbreak Trap
7.3%inclusion49 decks673 decks
2%synergy
Narset's Reversal
6.7%inclusion45 decks673 decks
5%synergy
Planar Genesis
6.7%inclusion37 decks556 decks
-4%synergy
Aetherize
6.2%inclusion42 decks673 decks
-6%synergy
Stubborn Denial
5.9%inclusion40 decks673 decks
3%synergy
Entish Restoration
5.9%inclusion40 decks673 decks
-3%synergy
Sublime Epiphany
5.8%inclusion39 decks673 decks
4%synergy
Dispel
5.5%inclusion37 decks673 decks
1%synergy
Muddle the Mixture
5.3%inclusion36 decks673 decks
1%synergy
Sorceries
Irenicus's Vile Duplication
56%inclusion380 decks673 decks
50%synergy
Rampant Growth
52%inclusion351 decks673 decks
12%synergy
Farseek
50%inclusion338 decks673 decks
26%synergy
Finale of Devastation
39%inclusion262 decks673 decks
27%synergy
Skyshroud Claim
38%inclusion255 decks673 decks
29%synergy
Quantum Misalignment
33%inclusion220 decks673 decks
30%synergy
Triumph of the Hordes
24%inclusion160 decks673 decks
21%synergy
Green Sun's Zenith
20%inclusion136 decks673 decks
11%synergy
Overwhelming Stampede
18%inclusion120 decks673 decks
6%synergy
Sea Gate Restoration
16%inclusion110 decks673 decks
11%synergy
Rite of Replication
16%inclusion108 decks673 decks
9%synergy
Explore
15%inclusion104 decks673 decks
-5%synergy
Bala Ged Recovery
14%inclusion93 decks673 decks
4%synergy
Distant Melody
11%inclusion72 decks673 decks
7%synergy
Rishkar's Expertise
10%inclusion69 decks673 decks
2%synergy
Windfall
10%inclusion65 decks673 decks
6%synergy
Shamanic Revelation
8.8%inclusion59 decks673 decks
3%synergy
Ponder
8.5%inclusion57 decks673 decks
1%synergy
Natural Order
7.1%inclusion48 decks673 decks
6%synergy
Fabricate
6.5%inclusion44 decks673 decks
0%synergy
Doppelgang
6.3%inclusion41 decks652 decks
0%synergy
Regrowth
6.2%inclusion42 decks673 decks
2%synergy
Explosive Vegetation
5.9%inclusion40 decks673 decks
0%synergy
Migration Path
5.9%inclusion40 decks673 decks
3%synergy
Sylvan Tutor
5.6%inclusion38 decks673 decks
4%synergy
Curse of the Swine
5.5%inclusion37 decks673 decks
-5%synergy
Expropriate
5.3%inclusion36 decks673 decks
4%synergy
Utility Artifacts
Lightning Greaves
50%inclusion339 decks673 decks
29%synergy
Helm of the Host
47%inclusion316 decks673 decks
42%synergy
Swiftfoot Boots
32%inclusion213 decks673 decks
6%synergy
The One Ring
30%inclusion203 decks673 decks
22%synergy
The Great Henge
27%inclusion185 decks673 decks
18%synergy
Mirror Box
16%inclusion111 decks673 decks
13%synergy
Combine Chrysalis
16%inclusion107 decks673 decks
12%synergy
Coat of Arms
14%inclusion93 decks673 decks
12%synergy
Eldrazi Monument
13%inclusion85 decks673 decks
12%synergy
Emerald Medallion
11%inclusion72 decks673 decks
8%synergy
Sapphire Medallion
8.9%inclusion60 decks673 decks
6%synergy
Skullclamp
8.6%inclusion58 decks673 decks
7%synergy
Winter Orb
8.2%inclusion55 decks673 decks
8%synergy
Static Orb
6.4%inclusion43 decks673 decks
6%synergy
Sensei's Divining Top
5.8%inclusion39 decks673 decks
2%synergy
Bident of Thassa
5.5%inclusion37 decks673 decks
-2%synergy
Enchantments
Tribute to the World Tree
56%inclusion378 decks673 decks
50%synergy
Mystic Remora
47%inclusion317 decks673 decks
32%synergy
Sylvan Library
41%inclusion274 decks673 decks
32%synergy
Kindred Discovery
35%inclusion233 decks673 decks
25%synergy
Exploration
26%inclusion174 decks673 decks
13%synergy
Cryptolith Rite
23%inclusion152 decks673 decks
19%synergy
Growing Rites of Itlimoc
21%inclusion138 decks673 decks
15%synergy
Burgeoning
19%inclusion131 decks673 decks
12%synergy
Primal Vigor
17%inclusion117 decks673 decks
14%synergy
Wild Growth
17%inclusion112 decks673 decks
8%synergy
Utopia Sprawl
16%inclusion107 decks673 decks
9%synergy
Defense of the Heart
15%inclusion104 decks673 decks
13%synergy
Beastmaster Ascension
15%inclusion101 decks673 decks
12%synergy
Paradox Haze
14%inclusion93 decks673 decks
13%synergy
Carpet of Flowers
14%inclusion91 decks673 decks
11%synergy
Moonlit Meditation
8.5%inclusion13 decks153 decks
7%synergy
Unnatural Growth
8.2%inclusion55 decks673 decks
5%synergy
Opposition
7.9%inclusion53 decks673 decks
7%synergy
Garruk's Uprising
7.7%inclusion52 decks673 decks
-9%synergy
Extravagant Replication
7.3%inclusion49 decks673 decks
5%synergy
Propaganda
7.1%inclusion48 decks673 decks
0%synergy
Kenrith's Transformation
6.7%inclusion45 decks673 decks
2%synergy
Asceticism
6.5%inclusion44 decks673 decks
3%synergy
Dismiss into Dream
6.5%inclusion44 decks673 decks
6%synergy
Imprisoned in the Moon
6.1%inclusion41 decks673 decks
2%synergy
Wilderness Reclamation
5.1%inclusion34 decks673 decks
-4%synergy
Battles
Invasion of Ikoria
7.7%inclusion52 decks673 decks
3%synergy
Planeswalkers
Oko, Thief of Crowns
35%inclusion234 decks673 decks
28%synergy
Utility Lands
Boseiju, Who Endures
67%inclusion452 decks673 decks
45%synergy
Reliquary Tower
64%inclusion430 decks673 decks
14%synergy
Yavimaya, Cradle of Growth
60%inclusion405 decks673 decks
38%synergy
Otawara, Soaring City
57%inclusion382 decks673 decks
38%synergy
Three Tree City
37%inclusion196 decks527 decks
32%synergy
Command Beacon
31%inclusion210 decks673 decks
27%synergy
Mistrise Village
28%inclusion81 decks288 decks
18%synergy
Evendo, Waking Haven
24%inclusion38 decks156 decks
19%synergy
Castle Garenbrig
19%inclusion129 decks673 decks
15%synergy
Urza's Saga
18%inclusion122 decks673 decks
13%synergy
Mystic Sanctuary
16%inclusion111 decks673 decks
4%synergy
Alchemist's Refuge
16%inclusion108 decks673 decks
-1%synergy
Minamo, School at Water's Edge
14%inclusion91 decks673 decks
7%synergy
Temple of the False God
11%inclusion75 decks673 decks
-4%synergy
Mosswort Bridge
11%inclusion72 decks673 decks
-7%synergy
Nykthos, Shrine to Nyx
10%inclusion70 decks673 decks
8%synergy
Rogue's Passage
10%inclusion66 decks673 decks
-12%synergy
Strip Mine
9.2%inclusion62 decks673 decks
6%synergy
Dryad Arbor
7.7%inclusion52 decks673 decks
2%synergy
Shifting Woodland
7.5%inclusion42 decks561 decks
1%synergy
Field of the Dead
7.1%inclusion48 decks673 decks
1%synergy
Wasteland
5.6%inclusion38 decks673 decks
4%synergy
Homeward Path
5.6%inclusion38 decks673 decks
4%synergy
Mana Artifacts
Sol Ring
96%inclusion643 decks673 decks
15%synergy
Arcane Signet
81%inclusion547 decks673 decks
18%synergy
Talisman of Curiosity
38%inclusion253 decks673 decks
16%synergy
Simic Signet
37%inclusion246 decks673 decks
5%synergy
Mana Vault
35%inclusion238 decks673 decks
29%synergy
Thought Vessel
34%inclusion226 decks673 decks
13%synergy
Chrome Mox
23%inclusion154 decks673 decks
16%synergy
Mana Crypt
17%inclusion117 decks673 decks
14%synergy
Mox Diamond
17%inclusion116 decks673 decks
12%synergy
Jeweled Lotus
16%inclusion110 decks673 decks
14%synergy
Fellwar Stone
15%inclusion101 decks673 decks
5%synergy
Lotus Petal
14%inclusion97 decks673 decks
7%synergy
Grim Monolith
11%inclusion75 decks673 decks
8%synergy
Mox Opal
10%inclusion68 decks673 decks
6%synergy
Basalt Monolith
8.3%inclusion56 decks673 decks
1%synergy
Decanter of Endless Water
5.9%inclusion40 decks673 decks
1%synergy
Patchwork Banner
5.9%inclusion31 decks523 decks
2%synergy
Thran Dynamo
5.3%inclusion36 decks673 decks
3%synergy
Lands
Command Tower
92%inclusion622 decks673 decks
7%synergy
Forest
91%inclusion615 decks673 decks
-4%synergy
Island
91%inclusion612 decks673 decks
-4%synergy
Breeding Pool
91%inclusion610 decks673 decks
45%synergy
Misty Rainforest
79%inclusion535 decks673 decks
48%synergy
Rejuvenating Springs
79%inclusion535 decks673 decks
36%synergy
Tropical Island
78%inclusion527 decks673 decks
64%synergy
Hinterland Harbor
62%inclusion415 decks673 decks
2%synergy
Yavimaya Coast
55%inclusion373 decks673 decks
3%synergy
Dreamroot Cascade
50%inclusion337 decks673 decks
8%synergy
Barkchannel Pathway
47%inclusion313 decks673 decks
26%synergy
Flooded Grove
40%inclusion266 decks673 decks
-1%synergy
Waterlogged Grove
35%inclusion236 decks673 decks
15%synergy
Simic Growth Chamber
32%inclusion216 decks673 decks
-16%synergy
Flooded Strand
30%inclusion205 decks673 decks
19%synergy
Windswept Heath
30%inclusion204 decks673 decks
20%synergy
Hedge Maze
30%inclusion197 decks653 decks
11%synergy
Verdant Catacombs
30%inclusion202 decks673 decks
20%synergy
Prismatic Vista
30%inclusion199 decks673 decks
22%synergy
Polluted Delta
28%inclusion191 decks673 decks
18%synergy
Willowrush Verge
28%inclusion97 decks349 decks
11%synergy
Scalding Tarn
28%inclusion187 decks673 decks
18%synergy
Wooded Foothills
25%inclusion170 decks673 decks
16%synergy
Exotic Orchard
21%inclusion144 decks673 decks
-2%synergy
Fabled Passage
21%inclusion141 decks673 decks
6%synergy
Vineglimmer Snarl
19%inclusion128 decks673 decks
-20%synergy
Sink into Stupor
18%inclusion102 decks563 decks
7%synergy
Mana Confluence
18%inclusion121 decks673 decks
12%synergy
Sea Gate Restoration
16%inclusion110 decks673 decks
11%synergy
Temple of Mystery
16%inclusion108 decks673 decks
-22%synergy
City of Brass
16%inclusion108 decks673 decks
10%synergy
Snow-Covered Island
14%inclusion97 decks673 decks
8%synergy
Snow-Covered Forest
14%inclusion95 decks673 decks
7%synergy
Bala Ged Recovery
14%inclusion93 decks673 decks
4%synergy
Gemstone Caverns
13%inclusion89 decks673 decks
7%synergy
Myriad Landscape
13%inclusion87 decks673 decks
-9%synergy
Reflecting Pool
11%inclusion71 decks673 decks
7%synergy
Botanical Sanctum
10%inclusion70 decks673 decks
-2%synergy
Cavern of Souls
10%inclusion68 decks673 decks
4%synergy
Rimewood Falls
10%inclusion67 decks673 decks
1%synergy
Glasspool Mimic
9.1%inclusion61 decks673 decks
5%synergy
Tangled Islet
8.6%inclusion58 decks673 decks
-8%synergy
Overflowing Basin
8.4%inclusion53 decks628 decks
-11%synergy
Evolving Wilds
7.1%inclusion48 decks673 decks
-18%synergy
Thornwood Falls
5.5%inclusion37 decks673 decks
-12%synergy
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