Koma, Cosmos Serpent (Commander) - Expensive

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #304
670decks
As CommanderAs CardAverage DeckDecks
Bracket
All12345
Budget
Any$$$$
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.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
New Cards
High Synergy Cards
Top Cards
Game Changers
Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Battles
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Tam, Mindful First-Year
22%inclusion2 decks9 decks
22%synergy
The Unagi of Kyoshi Island
11%inclusion10 decks87 decks
6%synergy
Wan Shi Tong, Librarian
7.8%inclusion7 decks90 decks
2%synergy
Badgermole Cub
7.8%inclusion7 decks90 decks
3%synergy
Shared Roots
7.0%inclusion6 decks86 decks
3%synergy
High Synergy Cards
Parallel Lives
81%inclusion545 decks670 decks
75%synergy
Adrix and Nev, Twincasters
83%inclusion555 decks670 decks
74%synergy
Sakashima of a Thousand Faces
78%inclusion523 decks670 decks
73%synergy
Elemental Bond
78%inclusion524 decks670 decks
73%synergy
Mana Drain
81%inclusion546 decks670 decks
66%synergy
Spark Double
73%inclusion487 decks670 decks
63%synergy
Doubling Season
70%inclusion471 decks670 decks
61%synergy
Whelming Wave
68%inclusion455 decks670 decks
57%synergy
Sakashima the Impostor
54%inclusion361 decks670 decks
51%synergy
Serpent of Yawning Depths
57%inclusion382 decks670 decks
51%synergy
Top Cards
Birds of Paradise
76%inclusion507 decks670 decks
48%synergy
Heroic Intervention
74%inclusion496 decks670 decks
44%synergy
Nature's Lore
68%inclusion458 decks670 decks
38%synergy
Three Visits
68%inclusion456 decks670 decks
45%synergy
Counterspell
67%inclusion452 decks670 decks
17%synergy
Cultivate
66%inclusion443 decks670 decks
19%synergy
Beast Within
62%inclusion414 decks670 decks
12%synergy
Koma, World-Eater
61%inclusion284 decks467 decks
48%synergy
Kodama's Reach
60%inclusion403 decks670 decks
24%synergy
Craterhoof Behemoth
60%inclusion402 decks670 decks
50%synergy
Game Changers
Gaea's Cradle
91%inclusion607 decks670 decks
83%synergy
Cyclonic Rift
84%inclusion562 decks670 decks
58%synergy
Rhystic Study
81%inclusion546 decks670 decks
60%synergy
Fierce Guardianship
76%inclusion506 decks670 decks
58%synergy
Ancient Tomb
60%inclusion399 decks670 decks
50%synergy
Force of Will
54%inclusion361 decks670 decks
44%synergy
Worldly Tutor
53%inclusion353 decks670 decks
37%synergy
Seedborn Muse
44%inclusion298 decks670 decks
29%synergy
Consecrated Sphinx
44%inclusion297 decks670 decks
36%synergy
Mystical Tutor
40%inclusion265 decks670 decks
30%synergy
Creatures
Llanowar Elves
53%inclusion357 decks670 decks
25%synergy
Aesi, Tyrant of Gyre Strait
53%inclusion353 decks670 decks
35%synergy
Junk Winder
52%inclusion350 decks670 decks
46%synergy
Roaming Throne
50%inclusion334 decks670 decks
42%synergy
Spawning Kraken
48%inclusion324 decks670 decks
41%synergy
Elvish Mystic
43%inclusion291 decks670 decks
19%synergy
Fyndhorn Elves
39%inclusion259 decks670 decks
23%synergy
Enduring Vitality
36%inclusion187 decks520 decks
28%synergy
Delighted Halfling
33%inclusion219 decks670 decks
21%synergy
Ohran Frostfang
31%inclusion207 decks670 decks
27%synergy
Eternal Witness
30%inclusion204 decks670 decks
9%synergy
Hullbreaker Horror
30%inclusion199 decks670 decks
12%synergy
Arixmethes, Slumbering Isle
30%inclusion198 decks670 decks
16%synergy
Fanatic of Rhonas
28%inclusion160 decks580 decks
22%synergy
Sakura-Tribe Elder
27%inclusion181 decks670 decks
8%synergy
Murkfiend Liege
26%inclusion177 decks670 decks
12%synergy
Garruk's Packleader
25%inclusion170 decks670 decks
23%synergy
Tatyova, Benthic Druid
23%inclusion157 decks670 decks
-8%synergy
Summon: Leviathan
23%inclusion57 decks244 decks
16%synergy
Esix, Fractal Bloom
21%inclusion139 decks670 decks
17%synergy
Octomancer
18%inclusion99 decks542 decks
13%synergy
Archetype of Imagination
17%inclusion112 decks670 decks
12%synergy
Kinnan, Bonder Prodigy
16%inclusion104 decks670 decks
12%synergy
Azusa, Lost but Seeking
15%inclusion102 decks670 decks
1%synergy
Toski, Bearer of Secrets
15%inclusion102 decks670 decks
12%synergy
Scute Swarm
14%inclusion92 decks670 decks
-7%synergy
Phyrexian Metamorph
14%inclusion92 decks670 decks
5%synergy
Slinn Voda, the Rising Deep
14%inclusion91 decks670 decks
7%synergy
Enduring Curiosity
14%inclusion71 decks524 decks
10%synergy
Circle of Dreams Druid
13%inclusion88 decks670 decks
11%synergy
Chameleon, Master of Disguise
13%inclusion18 decks141 decks
10%synergy
Curiosity Crafter
13%inclusion84 decks670 decks
9%synergy
Nezahal, Primal Tide
12%inclusion80 decks670 decks
1%synergy
Avenger of Zendikar
12%inclusion79 decks670 decks
-6%synergy
Uro, Titan of Nature's Wrath
12%inclusion78 decks670 decks
2%synergy
Clever Impersonator
11%inclusion76 decks670 decks
7%synergy
Saryth, the Viper's Fang
11%inclusion76 decks670 decks
10%synergy
Auton Soldier
11%inclusion71 decks670 decks
8%synergy
Lotus Cobra
10%inclusion67 decks670 decks
-4%synergy
Bloom Tender
10%inclusion66 decks670 decks
5%synergy
Jaheira, Friend of the Forest
10%inclusion64 decks670 decks
6%synergy
Arbor Elf
9.3%inclusion62 decks670 decks
3%synergy
Glasspool Mimic
9.3%inclusion62 decks670 decks
5%synergy
Reclamation Sage
9.0%inclusion60 decks670 decks
-5%synergy
Coiling Oracle
8.8%inclusion59 decks670 decks
-4%synergy
Selvala, Heart of the Wilds
8.8%inclusion59 decks670 decks
6%synergy
Progenitor Mimic
8.5%inclusion57 decks670 decks
4%synergy
Nyxbloom Ancient
8.1%inclusion54 decks670 decks
1%synergy
Thrasios, Triton Hero
7.9%inclusion53 decks670 decks
0%synergy
Gilded Drake
7.9%inclusion53 decks670 decks
5%synergy
Instants
Swan Song
59%inclusion397 decks670 decks
40%synergy
Pongify
46%inclusion305 decks670 decks
21%synergy
An Offer You Can't Refuse
45%inclusion299 decks670 decks
21%synergy
Force of Negation
43%inclusion285 decks670 decks
34%synergy
Double Major
42%inclusion283 decks670 decks
34%synergy
Growth Spiral
39%inclusion260 decks670 decks
-6%synergy
Second Harvest
33%inclusion219 decks670 decks
26%synergy
Rapid Hybridization
31%inclusion209 decks670 decks
5%synergy
Arcane Denial
30%inclusion198 decks670 decks
7%synergy
Negate
28%inclusion186 decks670 decks
2%synergy
Pact of Negation
26%inclusion172 decks670 decks
18%synergy
Return of the Wildspeaker
23%inclusion152 decks670 decks
12%synergy
Chord of Calling
21%inclusion143 decks670 decks
14%synergy
Sink into Stupor
19%inclusion111 decks584 decks
7%synergy
Krosan Grip
18%inclusion123 decks670 decks
11%synergy
Force of Vigor
18%inclusion123 decks670 decks
14%synergy
Nature's Claim
18%inclusion118 decks670 decks
8%synergy
Crop Rotation
17%inclusion117 decks670 decks
4%synergy
Archdruid's Charm
15%inclusion102 decks665 decks
9%synergy
Noxious Revival
15%inclusion101 decks670 decks
9%synergy
Flusterstorm
14%inclusion97 decks670 decks
8%synergy
Brainstorm
14%inclusion94 decks670 decks
0%synergy
Reality Shift
14%inclusion91 decks670 decks
-1%synergy
Disallow
11%inclusion72 decks670 decks
9%synergy
Voidslime
11%inclusion72 decks670 decks
6%synergy
Tamiyo's Safekeeping
10%inclusion70 decks670 decks
5%synergy
Strix Serenade
10%inclusion58 decks584 decks
6%synergy
Mystic Reflection
10%inclusion65 decks670 decks
7%synergy
Veil of Summer
8.7%inclusion58 decks670 decks
3%synergy
Simic Charm
8.2%inclusion55 decks670 decks
0%synergy
Mindbreak Trap
7.9%inclusion53 decks670 decks
3%synergy
Mental Misstep
7.9%inclusion53 decks670 decks
2%synergy
Resculpt
7.6%inclusion51 decks670 decks
2%synergy
Legolas's Quick Reflexes
7.2%inclusion48 decks670 decks
5%synergy
Planar Genesis
6.6%inclusion38 decks577 decks
-4%synergy
Harrow
6.6%inclusion44 decks670 decks
-5%synergy
Stubborn Denial
6.6%inclusion44 decks670 decks
4%synergy
Narset's Reversal
6.4%inclusion43 decks670 decks
5%synergy
Aetherize
6.3%inclusion42 decks670 decks
-6%synergy
Entish Restoration
6.0%inclusion40 decks670 decks
-3%synergy
Sublime Epiphany
5.7%inclusion38 decks670 decks
4%synergy
Dispel
5.7%inclusion38 decks670 decks
1%synergy
Muddle the Mixture
5.5%inclusion37 decks670 decks
1%synergy
Plasm Capture
5.2%inclusion35 decks670 decks
2%synergy
Sorceries
Irenicus's Vile Duplication
56%inclusion376 decks670 decks
50%synergy
Rampant Growth
52%inclusion351 decks670 decks
12%synergy
Farseek
51%inclusion342 decks670 decks
26%synergy
Finale of Devastation
39%inclusion263 decks670 decks
27%synergy
Skyshroud Claim
39%inclusion260 decks670 decks
30%synergy
Quantum Misalignment
32%inclusion215 decks670 decks
29%synergy
Triumph of the Hordes
23%inclusion152 decks670 decks
20%synergy
Green Sun's Zenith
20%inclusion133 decks670 decks
11%synergy
Overwhelming Stampede
19%inclusion125 decks670 decks
6%synergy
Sea Gate Restoration
17%inclusion115 decks670 decks
12%synergy
Explore
16%inclusion107 decks670 decks
-4%synergy
Rite of Replication
16%inclusion104 decks670 decks
8%synergy
Bala Ged Recovery
14%inclusion95 decks670 decks
4%synergy
Distant Melody
11%inclusion73 decks670 decks
8%synergy
Rishkar's Expertise
10%inclusion70 decks670 decks
2%synergy
Windfall
10%inclusion65 decks670 decks
6%synergy
Shamanic Revelation
9.3%inclusion62 decks670 decks
4%synergy
Ponder
8.5%inclusion57 decks670 decks
1%synergy
Fabricate
6.9%inclusion46 decks670 decks
0%synergy
Natural Order
6.7%inclusion45 decks670 decks
5%synergy
Migration Path
6.7%inclusion45 decks670 decks
3%synergy
Doppelgang
6.6%inclusion44 decks666 decks
0%synergy
Regrowth
6.6%inclusion44 decks670 decks
3%synergy
Explosive Vegetation
6.4%inclusion43 decks670 decks
1%synergy
Expropriate
5.8%inclusion39 decks670 decks
4%synergy
Sylvan Tutor
5.4%inclusion36 decks670 decks
4%synergy
Raise the Palisade
5.4%inclusion36 decks670 decks
-1%synergy
Curse of the Swine
5.2%inclusion35 decks670 decks
-6%synergy
Turntimber Symbiosis
5.1%inclusion34 decks670 decks
3%synergy
Utility Artifacts
Lightning Greaves
50%inclusion336 decks670 decks
28%synergy
Helm of the Host
47%inclusion313 decks670 decks
41%synergy
Swiftfoot Boots
31%inclusion206 decks670 decks
5%synergy
The One Ring
30%inclusion202 decks670 decks
22%synergy
The Great Henge
27%inclusion182 decks670 decks
18%synergy
Combine Chrysalis
16%inclusion108 decks670 decks
12%synergy
Mirror Box
16%inclusion107 decks670 decks
13%synergy
Coat of Arms
14%inclusion94 decks670 decks
13%synergy
Eldrazi Monument
12%inclusion82 decks670 decks
12%synergy
Emerald Medallion
11%inclusion74 decks670 decks
8%synergy
Sapphire Medallion
9.4%inclusion63 decks670 decks
6%synergy
Skullclamp
8.8%inclusion59 decks670 decks
8%synergy
Winter Orb
8.1%inclusion54 decks670 decks
8%synergy
Static Orb
6.1%inclusion41 decks670 decks
6%synergy
Bident of Thassa
5.7%inclusion38 decks670 decks
-2%synergy
Sensei's Divining Top
5.1%inclusion34 decks670 decks
1%synergy
Enchantments
Tribute to the World Tree
55%inclusion371 decks670 decks
49%synergy
Mystic Remora
46%inclusion311 decks670 decks
31%synergy
Sylvan Library
40%inclusion267 decks670 decks
31%synergy
Kindred Discovery
34%inclusion229 decks670 decks
24%synergy
Exploration
25%inclusion165 decks670 decks
11%synergy
Cryptolith Rite
22%inclusion149 decks670 decks
19%synergy
Growing Rites of Itlimoc
20%inclusion134 decks670 decks
14%synergy
Burgeoning
19%inclusion126 decks670 decks
12%synergy
Primal Vigor
17%inclusion117 decks670 decks
14%synergy
Wild Growth
17%inclusion113 decks670 decks
8%synergy
Utopia Sprawl
16%inclusion107 decks670 decks
9%synergy
Beastmaster Ascension
15%inclusion101 decks670 decks
12%synergy
Defense of the Heart
15%inclusion98 decks670 decks
12%synergy
Paradox Haze
14%inclusion93 decks670 decks
14%synergy
Carpet of Flowers
13%inclusion85 decks670 decks
10%synergy
Unnatural Growth
8.2%inclusion55 decks670 decks
5%synergy
Garruk's Uprising
7.8%inclusion52 decks670 decks
-9%synergy
Moonlit Meditation
7.7%inclusion14 decks181 decks
6%synergy
Extravagant Replication
7.3%inclusion49 decks670 decks
5%synergy
Opposition
7.0%inclusion47 decks670 decks
7%synergy
Propaganda
6.9%inclusion46 decks670 decks
0%synergy
Kenrith's Transformation
6.6%inclusion44 decks670 decks
2%synergy
Dismiss into Dream
6.6%inclusion44 decks670 decks
6%synergy
Impostor Syndrome
6.3%inclusion9 decks143 decks
4%synergy
Imprisoned in the Moon
6.0%inclusion40 decks670 decks
2%synergy
Asceticism
6.0%inclusion40 decks670 decks
3%synergy
Battles
Invasion of Ikoria
7.3%inclusion49 decks670 decks
3%synergy
Planeswalkers
Oko, Thief of Crowns
35%inclusion234 decks670 decks
28%synergy
Utility Lands
Boseiju, Who Endures
67%inclusion449 decks670 decks
45%synergy
Reliquary Tower
64%inclusion427 decks670 decks
14%synergy
Yavimaya, Cradle of Growth
60%inclusion401 decks670 decks
38%synergy
Otawara, Soaring City
56%inclusion377 decks670 decks
37%synergy
Three Tree City
37%inclusion203 decks548 decks
32%synergy
Command Beacon
31%inclusion210 decks670 decks
27%synergy
Mistrise Village
29%inclusion91 decks317 decks
18%synergy
Evendo, Waking Haven
24%inclusion45 decks184 decks
19%synergy
Castle Garenbrig
20%inclusion133 decks670 decks
15%synergy
Urza's Saga
18%inclusion118 decks670 decks
12%synergy
Alchemist's Refuge
17%inclusion115 decks670 decks
0%synergy
Mystic Sanctuary
16%inclusion105 decks670 decks
3%synergy
Minamo, School at Water's Edge
13%inclusion89 decks670 decks
7%synergy
Mosswort Bridge
11%inclusion77 decks670 decks
-6%synergy
Temple of the False God
11%inclusion74 decks670 decks
-4%synergy
Nykthos, Shrine to Nyx
10%inclusion70 decks670 decks
8%synergy
Rogue's Passage
10%inclusion66 decks670 decks
-12%synergy
Strip Mine
8.7%inclusion58 decks670 decks
6%synergy
Field of the Dead
7.5%inclusion50 decks670 decks
1%synergy
Dryad Arbor
7.5%inclusion50 decks670 decks
2%synergy
Shifting Woodland
7.4%inclusion43 decks582 decks
1%synergy
Wasteland
5.2%inclusion35 decks670 decks
4%synergy
Homeward Path
5.1%inclusion34 decks670 decks
3%synergy
Mana Artifacts
Sol Ring
96%inclusion643 decks670 decks
15%synergy
Arcane Signet
81%inclusion545 decks670 decks
18%synergy
Talisman of Curiosity
39%inclusion259 decks670 decks
17%synergy
Simic Signet
37%inclusion247 decks670 decks
5%synergy
Mana Vault
35%inclusion233 decks670 decks
28%synergy
Thought Vessel
34%inclusion225 decks670 decks
13%synergy
Chrome Mox
23%inclusion154 decks670 decks
16%synergy
Mox Diamond
17%inclusion115 decks670 decks
12%synergy
Fellwar Stone
15%inclusion101 decks670 decks
5%synergy
Mana Crypt
15%inclusion100 decks670 decks
12%synergy
Lotus Petal
15%inclusion99 decks670 decks
8%synergy
Jeweled Lotus
14%inclusion97 decks670 decks
13%synergy
Grim Monolith
11%inclusion74 decks670 decks
8%synergy
Mox Opal
10%inclusion66 decks670 decks
5%synergy
Basalt Monolith
8.2%inclusion55 decks670 decks
1%synergy
Patchwork Banner
5.9%inclusion32 decks544 decks
2%synergy
Decanter of Endless Water
5.7%inclusion38 decks670 decks
1%synergy
Thran Dynamo
5.4%inclusion36 decks670 decks
3%synergy
Lands
Command Tower
92%inclusion619 decks670 decks
7%synergy
Forest
91%inclusion611 decks670 decks
-4%synergy
Breeding Pool
91%inclusion608 decks670 decks
45%synergy
Island
91%inclusion608 decks670 decks
-5%synergy
Rejuvenating Springs
81%inclusion541 decks670 decks
37%synergy
Misty Rainforest
79%inclusion527 decks670 decks
47%synergy
Tropical Island
77%inclusion514 decks670 decks
62%synergy
Hinterland Harbor
62%inclusion418 decks670 decks
3%synergy
Yavimaya Coast
55%inclusion371 decks670 decks
3%synergy
Dreamroot Cascade
50%inclusion334 decks670 decks
8%synergy
Barkchannel Pathway
46%inclusion309 decks670 decks
26%synergy
Flooded Grove
40%inclusion266 decks670 decks
-1%synergy
Waterlogged Grove
35%inclusion237 decks670 decks
15%synergy
Hedge Maze
31%inclusion209 decks667 decks
12%synergy
Simic Growth Chamber
31%inclusion209 decks670 decks
-17%synergy
Windswept Heath
30%inclusion201 decks670 decks
19%synergy
Flooded Strand
30%inclusion200 decks670 decks
19%synergy
Prismatic Vista
30%inclusion198 decks670 decks
22%synergy
Verdant Catacombs
29%inclusion197 decks670 decks
20%synergy
Willowrush Verge
28%inclusion106 decks377 decks
11%synergy
Polluted Delta
28%inclusion187 decks670 decks
17%synergy
Scalding Tarn
27%inclusion180 decks670 decks
17%synergy
Wooded Foothills
25%inclusion165 decks670 decks
15%synergy
Exotic Orchard
21%inclusion141 decks670 decks
-3%synergy
Fabled Passage
21%inclusion138 decks670 decks
6%synergy
Vineglimmer Snarl
19%inclusion129 decks670 decks
-19%synergy
Sink into Stupor
19%inclusion111 decks584 decks
7%synergy
Mana Confluence
18%inclusion119 decks670 decks
12%synergy
Sea Gate Restoration
17%inclusion115 decks670 decks
12%synergy
Temple of Mystery
17%inclusion114 decks670 decks
-21%synergy
City of Brass
15%inclusion103 decks670 decks
9%synergy
Snow-Covered Island
14%inclusion97 decks670 decks
8%synergy
Snow-Covered Forest
14%inclusion95 decks670 decks
7%synergy
Bala Ged Recovery
14%inclusion95 decks670 decks
4%synergy
Gemstone Caverns
13%inclusion90 decks670 decks
7%synergy
Myriad Landscape
13%inclusion84 decks670 decks
-9%synergy
Botanical Sanctum
11%inclusion73 decks670 decks
-2%synergy
Reflecting Pool
10%inclusion69 decks670 decks
7%synergy
Rimewood Falls
10%inclusion68 decks670 decks
1%synergy
Cavern of Souls
10%inclusion65 decks670 decks
4%synergy
Glasspool Mimic
9.3%inclusion62 decks670 decks
5%synergy
Tangled Islet
8.5%inclusion57 decks670 decks
-8%synergy
Overflowing Basin
8.4%inclusion54 decks644 decks
-11%synergy
Evolving Wilds
6.7%inclusion45 decks670 decks
-18%synergy
Thornwood Falls
5.7%inclusion38 decks670 decks
-12%synergy
Turntimber Symbiosis
5.1%inclusion34 decks670 decks
3%synergy
About UsContactPrivacy PolicyTerms of Service
Space Cow MediaArchidektCardsphereCommander SpellbookFABRECSpellvoid
Space Cow MediaArchidektCommander's Herald
Commander SpellbookFABRECSpellvoid
EDHREC is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC.
next@15 test