Koma, Cosmos Serpent (Commander) - Expensive

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #295
665decks
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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
7.7%inclusion3 decks39 decks
3%synergy
Wan Shi Tong, Librarian
7.1%inclusion3 decks42 decks
3%synergy
Badgermole Cub
7.1%inclusion3 decks42 decks
3%synergy
Great Divide Guide
2.9%inclusion1 decks35 decks
2%synergy
The Walls of Ba Sing Se
2.9%inclusion1 decks35 decks
2%synergy
High Synergy Cards
Parallel Lives
82%inclusion543 decks665 decks
76%synergy
Adrix and Nev, Twincasters
82%inclusion543 decks665 decks
73%synergy
Sakashima of a Thousand Faces
78%inclusion520 decks665 decks
73%synergy
Elemental Bond
78%inclusion521 decks665 decks
73%synergy
Mana Drain
82%inclusion546 decks665 decks
66%synergy
Spark Double
73%inclusion484 decks665 decks
63%synergy
Doubling Season
70%inclusion464 decks665 decks
60%synergy
Whelming Wave
67%inclusion446 decks665 decks
56%synergy
Sakashima the Impostor
55%inclusion363 decks665 decks
52%synergy
Serpent of Yawning Depths
57%inclusion376 decks665 decks
50%synergy
Top Cards
Birds of Paradise
76%inclusion503 decks665 decks
48%synergy
Heroic Intervention
74%inclusion493 decks665 decks
44%synergy
Nature's Lore
69%inclusion457 decks665 decks
38%synergy
Three Visits
68%inclusion449 decks665 decks
44%synergy
Cultivate
66%inclusion438 decks665 decks
19%synergy
Counterspell
66%inclusion438 decks665 decks
16%synergy
Koma, World-Eater
60%inclusion259 decks430 decks
47%synergy
Kodama's Reach
60%inclusion400 decks665 decks
24%synergy
Beast Within
60%inclusion398 decks665 decks
10%synergy
Swan Song
59%inclusion394 decks665 decks
40%synergy
Game Changers
Gaea's Cradle
90%inclusion598 decks665 decks
83%synergy
Cyclonic Rift
84%inclusion561 decks665 decks
58%synergy
Rhystic Study
82%inclusion547 decks665 decks
60%synergy
Fierce Guardianship
77%inclusion510 decks665 decks
59%synergy
Ancient Tomb
60%inclusion398 decks665 decks
51%synergy
Force of Will
55%inclusion366 decks665 decks
45%synergy
Worldly Tutor
53%inclusion355 decks665 decks
38%synergy
Consecrated Sphinx
46%inclusion304 decks665 decks
37%synergy
Seedborn Muse
45%inclusion301 decks665 decks
30%synergy
Mystical Tutor
40%inclusion268 decks665 decks
31%synergy
Creatures
Craterhoof Behemoth
59%inclusion394 decks665 decks
50%synergy
Llanowar Elves
53%inclusion354 decks665 decks
25%synergy
Junk Winder
53%inclusion353 decks665 decks
46%synergy
Aesi, Tyrant of Gyre Strait
52%inclusion347 decks665 decks
35%synergy
Roaming Throne
49%inclusion329 decks665 decks
41%synergy
Spawning Kraken
48%inclusion322 decks665 decks
41%synergy
Elvish Mystic
43%inclusion285 decks665 decks
19%synergy
Fyndhorn Elves
39%inclusion258 decks665 decks
23%synergy
Enduring Vitality
36%inclusion177 decks485 decks
29%synergy
Delighted Halfling
33%inclusion221 decks665 decks
22%synergy
Eternal Witness
30%inclusion202 decks665 decks
9%synergy
Ohran Frostfang
30%inclusion202 decks665 decks
27%synergy
Hullbreaker Horror
30%inclusion197 decks665 decks
12%synergy
Arixmethes, Slumbering Isle
29%inclusion191 decks665 decks
15%synergy
Fanatic of Rhonas
28%inclusion155 decks545 decks
23%synergy
Sakura-Tribe Elder
28%inclusion183 decks665 decks
8%synergy
Murkfiend Liege
26%inclusion176 decks665 decks
12%synergy
Garruk's Packleader
25%inclusion167 decks665 decks
23%synergy
Tatyova, Benthic Druid
23%inclusion154 decks665 decks
-8%synergy
Summon: Leviathan
21%inclusion42 decks202 decks
14%synergy
Esix, Fractal Bloom
20%inclusion135 decks665 decks
16%synergy
Octomancer
19%inclusion94 decks507 decks
14%synergy
Archetype of Imagination
16%inclusion108 decks665 decks
12%synergy
Kinnan, Bonder Prodigy
16%inclusion106 decks665 decks
13%synergy
Toski, Bearer of Secrets
15%inclusion103 decks665 decks
12%synergy
Azusa, Lost but Seeking
15%inclusion103 decks665 decks
1%synergy
Phyrexian Metamorph
14%inclusion93 decks665 decks
5%synergy
Enduring Curiosity
14%inclusion68 decks489 decks
11%synergy
Circle of Dreams Druid
14%inclusion92 decks665 decks
11%synergy
Scute Swarm
14%inclusion90 decks665 decks
-7%synergy
Slinn Voda, the Rising Deep
13%inclusion89 decks665 decks
7%synergy
Curiosity Crafter
12%inclusion83 decks665 decks
9%synergy
Chameleon, Master of Disguise
12%inclusion12 decks97 decks
10%synergy
Saryth, the Viper's Fang
12%inclusion81 decks665 decks
10%synergy
Avenger of Zendikar
12%inclusion80 decks665 decks
-6%synergy
Uro, Titan of Nature's Wrath
12%inclusion79 decks665 decks
2%synergy
Nezahal, Primal Tide
12%inclusion78 decks665 decks
1%synergy
Clever Impersonator
11%inclusion76 decks665 decks
7%synergy
Auton Soldier
11%inclusion73 decks665 decks
8%synergy
Jaheira, Friend of the Forest
10%inclusion69 decks665 decks
6%synergy
Reclamation Sage
10%inclusion65 decks665 decks
-5%synergy
Bloom Tender
10%inclusion65 decks665 decks
5%synergy
Arbor Elf
9.5%inclusion63 decks665 decks
3%synergy
Lotus Cobra
9.5%inclusion63 decks665 decks
-4%synergy
Glasspool Mimic
9.3%inclusion62 decks665 decks
5%synergy
Selvala, Heart of the Wilds
8.9%inclusion59 decks665 decks
6%synergy
Progenitor Mimic
8.4%inclusion56 decks665 decks
4%synergy
Coiling Oracle
8.3%inclusion55 decks665 decks
-5%synergy
Starwinder
8.2%inclusion11 decks134 decks
2%synergy
Gilded Drake
8.1%inclusion54 decks665 decks
6%synergy
Instants
Pongify
45%inclusion296 decks665 decks
20%synergy
An Offer You Can't Refuse
44%inclusion290 decks665 decks
21%synergy
Force of Negation
43%inclusion287 decks665 decks
35%synergy
Double Major
43%inclusion286 decks665 decks
35%synergy
Growth Spiral
38%inclusion250 decks665 decks
-7%synergy
Second Harvest
34%inclusion224 decks665 decks
27%synergy
Rapid Hybridization
31%inclusion203 decks665 decks
4%synergy
Arcane Denial
30%inclusion202 decks665 decks
8%synergy
Negate
28%inclusion183 decks665 decks
2%synergy
Pact of Negation
26%inclusion170 decks665 decks
18%synergy
Return of the Wildspeaker
23%inclusion151 decks665 decks
12%synergy
Chord of Calling
22%inclusion145 decks665 decks
14%synergy
Krosan Grip
19%inclusion126 decks665 decks
11%synergy
Sink into Stupor
18%inclusion99 decks549 decks
7%synergy
Force of Vigor
18%inclusion118 decks665 decks
13%synergy
Nature's Claim
18%inclusion117 decks665 decks
8%synergy
Crop Rotation
17%inclusion111 decks665 decks
3%synergy
Noxious Revival
16%inclusion105 decks665 decks
10%synergy
Archdruid's Charm
15%inclusion97 decks635 decks
9%synergy
Brainstorm
15%inclusion99 decks665 decks
1%synergy
Flusterstorm
13%inclusion89 decks665 decks
7%synergy
Reality Shift
13%inclusion88 decks665 decks
-1%synergy
Mystic Reflection
11%inclusion72 decks665 decks
8%synergy
Disallow
10%inclusion69 decks665 decks
9%synergy
Tamiyo's Safekeeping
10%inclusion69 decks665 decks
5%synergy
Voidslime
10%inclusion68 decks665 decks
5%synergy
Strix Serenade
10%inclusion56 decks549 decks
6%synergy
Veil of Summer
9.2%inclusion61 decks665 decks
3%synergy
Mental Misstep
8.1%inclusion54 decks665 decks
3%synergy
Resculpt
8.1%inclusion54 decks665 decks
2%synergy
Simic Charm
7.5%inclusion50 decks665 decks
-1%synergy
Mindbreak Trap
7.4%inclusion49 decks665 decks
3%synergy
Legolas's Quick Reflexes
7.4%inclusion49 decks665 decks
5%synergy
Harrow
7.4%inclusion49 decks665 decks
-5%synergy
Planar Genesis
7.0%inclusion38 decks542 decks
-4%synergy
Narset's Reversal
6.6%inclusion44 decks665 decks
5%synergy
Stubborn Denial
6.2%inclusion41 decks665 decks
4%synergy
Entish Restoration
6.2%inclusion41 decks665 decks
-3%synergy
Aetherize
5.9%inclusion39 decks665 decks
-6%synergy
Sublime Epiphany
5.7%inclusion38 decks665 decks
4%synergy
Muddle the Mixture
5.6%inclusion37 decks665 decks
1%synergy
Dispel
5.4%inclusion36 decks665 decks
1%synergy
Plasm Capture
5.3%inclusion35 decks665 decks
2%synergy
Chain of Vapor
5.1%inclusion34 decks665 decks
2%synergy
Auroral Procession
5.1%inclusion14 decks275 decks
1%synergy
Sorceries
Irenicus's Vile Duplication
56%inclusion370 decks665 decks
49%synergy
Rampant Growth
52%inclusion349 decks665 decks
12%synergy
Farseek
50%inclusion332 decks665 decks
25%synergy
Finale of Devastation
39%inclusion258 decks665 decks
27%synergy
Skyshroud Claim
38%inclusion250 decks665 decks
28%synergy
Quantum Misalignment
32%inclusion216 decks665 decks
30%synergy
Triumph of the Hordes
24%inclusion158 decks665 decks
21%synergy
Green Sun's Zenith
20%inclusion133 decks665 decks
11%synergy
Overwhelming Stampede
18%inclusion118 decks665 decks
6%synergy
Sea Gate Restoration
17%inclusion111 decks665 decks
11%synergy
Rite of Replication
16%inclusion107 decks665 decks
9%synergy
Explore
15%inclusion103 decks665 decks
-5%synergy
Bala Ged Recovery
14%inclusion90 decks665 decks
4%synergy
Distant Melody
11%inclusion71 decks665 decks
7%synergy
Rishkar's Expertise
10%inclusion68 decks665 decks
2%synergy
Windfall
9.3%inclusion62 decks665 decks
5%synergy
Shamanic Revelation
9.0%inclusion60 decks665 decks
4%synergy
Ponder
8.3%inclusion55 decks665 decks
1%synergy
Natural Order
7.2%inclusion48 decks665 decks
6%synergy
Fabricate
6.6%inclusion44 decks665 decks
0%synergy
Regrowth
6.5%inclusion43 decks665 decks
3%synergy
Doppelgang
6.1%inclusion39 decks636 decks
0%synergy
Sylvan Tutor
5.9%inclusion39 decks665 decks
4%synergy
Migration Path
5.9%inclusion39 decks665 decks
2%synergy
Explosive Vegetation
5.7%inclusion38 decks665 decks
0%synergy
Curse of the Swine
5.4%inclusion36 decks665 decks
-6%synergy
Expropriate
5.4%inclusion36 decks665 decks
4%synergy
Utility Artifacts
Lightning Greaves
50%inclusion334 decks665 decks
28%synergy
Helm of the Host
47%inclusion313 decks665 decks
42%synergy
Swiftfoot Boots
32%inclusion211 decks665 decks
6%synergy
The One Ring
30%inclusion201 decks665 decks
23%synergy
The Great Henge
27%inclusion181 decks665 decks
18%synergy
Mirror Box
17%inclusion112 decks665 decks
13%synergy
Combine Chrysalis
17%inclusion110 decks665 decks
12%synergy
Coat of Arms
14%inclusion91 decks665 decks
12%synergy
Eldrazi Monument
12%inclusion82 decks665 decks
12%synergy
Emerald Medallion
11%inclusion74 decks665 decks
8%synergy
Sapphire Medallion
9.2%inclusion61 decks665 decks
6%synergy
Skullclamp
8.7%inclusion58 decks665 decks
8%synergy
Winter Orb
8.1%inclusion54 decks665 decks
8%synergy
Static Orb
6.5%inclusion43 decks665 decks
6%synergy
Sensei's Divining Top
5.6%inclusion37 decks665 decks
2%synergy
Bident of Thassa
5.1%inclusion34 decks665 decks
-2%synergy
Enchantments
Tribute to the World Tree
55%inclusion369 decks665 decks
49%synergy
Mystic Remora
47%inclusion314 decks665 decks
32%synergy
Sylvan Library
41%inclusion270 decks665 decks
31%synergy
Kindred Discovery
34%inclusion225 decks665 decks
24%synergy
Exploration
25%inclusion168 decks665 decks
12%synergy
Cryptolith Rite
22%inclusion149 decks665 decks
19%synergy
Growing Rites of Itlimoc
20%inclusion133 decks665 decks
14%synergy
Burgeoning
19%inclusion125 decks665 decks
12%synergy
Wild Growth
17%inclusion113 decks665 decks
8%synergy
Primal Vigor
17%inclusion111 decks665 decks
14%synergy
Utopia Sprawl
16%inclusion108 decks665 decks
10%synergy
Defense of the Heart
15%inclusion100 decks665 decks
13%synergy
Beastmaster Ascension
15%inclusion99 decks665 decks
12%synergy
Paradox Haze
14%inclusion94 decks665 decks
14%synergy
Carpet of Flowers
13%inclusion89 decks665 decks
11%synergy
Moonlit Meditation
8.7%inclusion12 decks138 decks
7%synergy
Unnatural Growth
8.4%inclusion56 decks665 decks
5%synergy
Opposition
7.7%inclusion51 decks665 decks
7%synergy
Garruk's Uprising
7.5%inclusion50 decks665 decks
-9%synergy
Extravagant Replication
7.2%inclusion48 decks665 decks
5%synergy
Propaganda
7.2%inclusion48 decks665 decks
1%synergy
Asceticism
7.1%inclusion47 decks665 decks
4%synergy
Dismiss into Dream
6.9%inclusion46 decks665 decks
7%synergy
Kenrith's Transformation
6.8%inclusion45 decks665 decks
2%synergy
Impostor Syndrome
6.1%inclusion6 decks99 decks
4%synergy
Imprisoned in the Moon
6.0%inclusion40 decks665 decks
2%synergy
Battles
Invasion of Ikoria
7.2%inclusion48 decks665 decks
3%synergy
Planeswalkers
Oko, Thief of Crowns
35%inclusion230 decks665 decks
27%synergy
Utility Lands
Boseiju, Who Endures
67%inclusion447 decks665 decks
45%synergy
Reliquary Tower
64%inclusion428 decks665 decks
14%synergy
Yavimaya, Cradle of Growth
61%inclusion404 decks665 decks
39%synergy
Otawara, Soaring City
57%inclusion378 decks665 decks
38%synergy
Three Tree City
37%inclusion189 decks513 decks
32%synergy
Command Beacon
31%inclusion203 decks665 decks
26%synergy
Mistrise Village
28%inclusion77 decks275 decks
17%synergy
Evendo, Waking Haven
23%inclusion33 decks141 decks
18%synergy
Castle Garenbrig
19%inclusion127 decks665 decks
14%synergy
Urza's Saga
18%inclusion121 decks665 decks
13%synergy
Mystic Sanctuary
17%inclusion112 decks665 decks
4%synergy
Alchemist's Refuge
16%inclusion106 decks665 decks
-2%synergy
Minamo, School at Water's Edge
14%inclusion91 decks665 decks
7%synergy
Mosswort Bridge
11%inclusion75 decks665 decks
-6%synergy
Temple of the False God
11%inclusion75 decks665 decks
-4%synergy
Nykthos, Shrine to Nyx
11%inclusion70 decks665 decks
8%synergy
Rogue's Passage
10%inclusion66 decks665 decks
-12%synergy
Strip Mine
8.9%inclusion59 decks665 decks
6%synergy
Shifting Woodland
7.7%inclusion42 decks547 decks
1%synergy
Dryad Arbor
7.7%inclusion51 decks665 decks
2%synergy
Field of the Dead
7.4%inclusion49 decks665 decks
1%synergy
Homeward Path
5.9%inclusion39 decks665 decks
4%synergy
Wasteland
5.4%inclusion36 decks665 decks
4%synergy
Mana Artifacts
Sol Ring
95%inclusion635 decks665 decks
15%synergy
Arcane Signet
82%inclusion544 decks665 decks
19%synergy
Talisman of Curiosity
38%inclusion254 decks665 decks
17%synergy
Simic Signet
37%inclusion243 decks665 decks
4%synergy
Mana Vault
35%inclusion235 decks665 decks
29%synergy
Thought Vessel
34%inclusion225 decks665 decks
14%synergy
Chrome Mox
23%inclusion154 decks665 decks
16%synergy
Mana Crypt
18%inclusion121 decks665 decks
15%synergy
Mox Diamond
17%inclusion115 decks665 decks
12%synergy
Jeweled Lotus
17%inclusion112 decks665 decks
15%synergy
Lotus Petal
15%inclusion97 decks665 decks
8%synergy
Fellwar Stone
15%inclusion97 decks665 decks
5%synergy
Grim Monolith
11%inclusion74 decks665 decks
8%synergy
Mox Opal
11%inclusion70 decks665 decks
6%synergy
Basalt Monolith
8.4%inclusion56 decks665 decks
2%synergy
Patchwork Banner
6.1%inclusion31 decks509 decks
3%synergy
Decanter of Endless Water
6.0%inclusion40 decks665 decks
1%synergy
Thran Dynamo
5.3%inclusion35 decks665 decks
3%synergy
Lands
Command Tower
92%inclusion611 decks665 decks
7%synergy
Forest
91%inclusion608 decks665 decks
-4%synergy
Island
91%inclusion605 decks665 decks
-4%synergy
Breeding Pool
91%inclusion603 decks665 decks
45%synergy
Rejuvenating Springs
80%inclusion530 decks665 decks
36%synergy
Misty Rainforest
80%inclusion529 decks665 decks
48%synergy
Tropical Island
78%inclusion517 decks665 decks
64%synergy
Hinterland Harbor
61%inclusion407 decks665 decks
2%synergy
Yavimaya Coast
55%inclusion367 decks665 decks
3%synergy
Dreamroot Cascade
49%inclusion326 decks665 decks
7%synergy
Barkchannel Pathway
47%inclusion311 decks665 decks
26%synergy
Flooded Grove
40%inclusion264 decks665 decks
-1%synergy
Waterlogged Grove
35%inclusion232 decks665 decks
14%synergy
Simic Growth Chamber
32%inclusion216 decks665 decks
-16%synergy
Hedge Maze
30%inclusion192 decks637 decks
11%synergy
Verdant Catacombs
30%inclusion198 decks665 decks
20%synergy
Flooded Strand
30%inclusion198 decks665 decks
19%synergy
Windswept Heath
30%inclusion197 decks665 decks
19%synergy
Prismatic Vista
29%inclusion196 decks665 decks
22%synergy
Willowrush Verge
28%inclusion95 decks336 decks
12%synergy
Polluted Delta
28%inclusion185 decks665 decks
17%synergy
Scalding Tarn
28%inclusion183 decks665 decks
18%synergy
Wooded Foothills
25%inclusion163 decks665 decks
15%synergy
Exotic Orchard
22%inclusion143 decks665 decks
-2%synergy
Fabled Passage
21%inclusion141 decks665 decks
7%synergy
Vineglimmer Snarl
19%inclusion125 decks665 decks
-20%synergy
Mana Confluence
18%inclusion121 decks665 decks
13%synergy
Sink into Stupor
18%inclusion99 decks549 decks
7%synergy
Sea Gate Restoration
17%inclusion111 decks665 decks
11%synergy
Temple of Mystery
16%inclusion109 decks665 decks
-22%synergy
City of Brass
16%inclusion107 decks665 decks
10%synergy
Snow-Covered Island
15%inclusion97 decks665 decks
8%synergy
Snow-Covered Forest
14%inclusion95 decks665 decks
7%synergy
Myriad Landscape
14%inclusion91 decks665 decks
-8%synergy
Bala Ged Recovery
14%inclusion90 decks665 decks
4%synergy
Gemstone Caverns
13%inclusion89 decks665 decks
7%synergy
Botanical Sanctum
11%inclusion70 decks665 decks
-2%synergy
Reflecting Pool
10%inclusion68 decks665 decks
7%synergy
Rimewood Falls
10%inclusion68 decks665 decks
1%synergy
Cavern of Souls
10%inclusion67 decks665 decks
4%synergy
Glasspool Mimic
9.3%inclusion62 decks665 decks
5%synergy
Tangled Islet
8.4%inclusion56 decks665 decks
-8%synergy
Overflowing Basin
8.3%inclusion51 decks613 decks
-11%synergy
Evolving Wilds
7.1%inclusion47 decks665 decks
-18%synergy
Thornwood Falls
6.0%inclusion40 decks665 decks
-12%synergy
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