Koma, Cosmos Serpent (Commander) - Optimized

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #307
288decks
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.
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The Unagi of Kyoshi Island
8.6%inclusion7 decks81 decks
3%synergy
Badgermole Cub
6.0%inclusion5 decks84 decks
1%synergy
Shared Roots
5.0%inclusion4 decks80 decks
1%synergy
Tam, Mindful First-Year
4.3%inclusion1 decks23 decks
4%synergy
Loch Mare
4.3%inclusion1 decks23 decks
4%synergy
High Synergy Cards
Adrix and Nev, Twincasters
81%inclusion233 decks288 decks
72%synergy
Parallel Lives
74%inclusion214 decks288 decks
68%synergy
Spark Double
74%inclusion214 decks288 decks
65%synergy
Elemental Bond
70%inclusion201 decks288 decks
64%synergy
Sakashima of a Thousand Faces
68%inclusion196 decks288 decks
63%synergy
Whelming Wave
67%inclusion194 decks288 decks
56%synergy
Doubling Season
63%inclusion181 decks288 decks
53%synergy
Serpent of Yawning Depths
58%inclusion166 decks288 decks
51%synergy
Sakashima the Impostor
52%inclusion149 decks288 decks
49%synergy
Mana Drain
63%inclusion180 decks288 decks
47%synergy
Top Cards
Counterspell
77%inclusion221 decks288 decks
27%synergy
Cultivate
72%inclusion207 decks288 decks
25%synergy
Kodama's Reach
68%inclusion196 decks288 decks
32%synergy
Birds of Paradise
67%inclusion192 decks288 decks
39%synergy
Heroic Intervention
65%inclusion187 decks288 decks
35%synergy
Nature's Lore
64%inclusion183 decks288 decks
33%synergy
Beast Within
61%inclusion176 decks288 decks
11%synergy
Rampant Growth
60%inclusion172 decks288 decks
19%synergy
Three Visits
59%inclusion169 decks288 decks
35%synergy
Koma, World-Eater
58%inclusion165 decks284 decks
45%synergy
Game Changers
Cyclonic Rift
80%inclusion230 decks288 decks
54%synergy
Rhystic Study
74%inclusion213 decks288 decks
52%synergy
Fierce Guardianship
68%inclusion197 decks288 decks
51%synergy
Worldly Tutor
47%inclusion135 decks288 decks
31%synergy
Seedborn Muse
47%inclusion135 decks288 decks
31%synergy
Mystical Tutor
40%inclusion116 decks288 decks
31%synergy
Force of Will
40%inclusion114 decks288 decks
29%synergy
Consecrated Sphinx
36%inclusion103 decks288 decks
27%synergy
Ancient Tomb
32%inclusion91 decks288 decks
22%synergy
Mana Vault
21%inclusion60 decks288 decks
14%synergy
Creatures
Llanowar Elves
51%inclusion148 decks288 decks
23%synergy
Craterhoof Behemoth
50%inclusion144 decks288 decks
40%synergy
Aesi, Tyrant of Gyre Strait
50%inclusion143 decks288 decks
32%synergy
Spawning Kraken
47%inclusion136 decks288 decks
40%synergy
Junk Winder
45%inclusion129 decks288 decks
38%synergy
Elvish Mystic
44%inclusion128 decks288 decks
20%synergy
Ohran Frostfang
34%inclusion99 decks288 decks
31%synergy
Roaming Throne
34%inclusion97 decks288 decks
26%synergy
Eternal Witness
32%inclusion93 decks288 decks
11%synergy
Arixmethes, Slumbering Isle
31%inclusion88 decks288 decks
17%synergy
Fyndhorn Elves
30%inclusion87 decks288 decks
15%synergy
Sakura-Tribe Elder
30%inclusion85 decks288 decks
10%synergy
Tatyova, Benthic Druid
29%inclusion84 decks288 decks
-2%synergy
Enduring Vitality
28%inclusion79 decks287 decks
20%synergy
Hullbreaker Horror
25%inclusion73 decks288 decks
8%synergy
Murkfiend Liege
24%inclusion70 decks288 decks
10%synergy
Garruk's Packleader
24%inclusion68 decks288 decks
21%synergy
Fanatic of Rhonas
22%inclusion63 decks288 decks
16%synergy
Delighted Halfling
20%inclusion59 decks288 decks
9%synergy
Summon: Leviathan
19%inclusion39 decks203 decks
12%synergy
Azusa, Lost but Seeking
19%inclusion54 decks288 decks
5%synergy
Archetype of Imagination
18%inclusion52 decks288 decks
14%synergy
Toski, Bearer of Secrets
14%inclusion40 decks288 decks
10%synergy
Slinn Voda, the Rising Deep
13%inclusion38 decks288 decks
7%synergy
Esix, Fractal Bloom
13%inclusion37 decks288 decks
9%synergy
Octomancer
13%inclusion36 decks288 decks
8%synergy
Coiling Oracle
12%inclusion35 decks288 decks
-1%synergy
Nezahal, Primal Tide
12%inclusion35 decks288 decks
1%synergy
Scute Swarm
12%inclusion34 decks288 decks
-9%synergy
Kinnan, Bonder Prodigy
12%inclusion34 decks288 decks
8%synergy
Saryth, the Viper's Fang
11%inclusion31 decks288 decks
9%synergy
Curiosity Crafter
11%inclusion31 decks288 decks
7%synergy
Lotus Cobra
10%inclusion29 decks288 decks
-4%synergy
Uro, Titan of Nature's Wrath
10%inclusion29 decks288 decks
0%synergy
Enduring Curiosity
10%inclusion28 decks287 decks
7%synergy
Reclamation Sage
10%inclusion28 decks288 decks
-4%synergy
Glasspool Mimic
10%inclusion28 decks288 decks
5%synergy
Circle of Dreams Druid
9.4%inclusion27 decks288 decks
7%synergy
Tireless Provisioner
9.4%inclusion27 decks288 decks
-6%synergy
Vorinclex, Voice of Hunger
8.7%inclusion25 decks288 decks
6%synergy
Avenger of Zendikar
8.0%inclusion23 decks288 decks
-10%synergy
Arbor Elf
8.0%inclusion23 decks288 decks
2%synergy
Selvala, Heart of the Wilds
7.6%inclusion22 decks288 decks
4%synergy
Faerie Mastermind
7.6%inclusion22 decks288 decks
3%synergy
Oracle of Mul Daya
7.6%inclusion22 decks288 decks
-1%synergy
Xolatoyac, the Smiling Flood
7.6%inclusion22 decks288 decks
0%synergy
Hydroelectric Specimen
7.6%inclusion22 decks288 decks
2%synergy
Starwinder
7.3%inclusion11 decks151 decks
1%synergy
Phyrexian Metamorph
6.9%inclusion20 decks288 decks
-2%synergy
Scourge of Fleets
6.9%inclusion20 decks288 decks
-1%synergy
Instants
Swan Song
53%inclusion154 decks288 decks
34%synergy
Pongify
46%inclusion132 decks288 decks
21%synergy
An Offer You Can't Refuse
44%inclusion127 decks288 decks
21%synergy
Growth Spiral
43%inclusion125 decks288 decks
-1%synergy
Double Major
38%inclusion109 decks288 decks
29%synergy
Arcane Denial
36%inclusion104 decks288 decks
14%synergy
Negate
36%inclusion103 decks288 decks
10%synergy
Rapid Hybridization
33%inclusion96 decks288 decks
7%synergy
Force of Negation
32%inclusion91 decks288 decks
23%synergy
Second Harvest
31%inclusion90 decks288 decks
25%synergy
Return of the Wildspeaker
24%inclusion69 decks288 decks
14%synergy
Pact of Negation
22%inclusion64 decks288 decks
15%synergy
Sink into Stupor
18%inclusion51 decks288 decks
6%synergy
Chord of Calling
17%inclusion49 decks288 decks
9%synergy
Krosan Grip
17%inclusion48 decks288 decks
9%synergy
Reality Shift
16%inclusion45 decks288 decks
1%synergy
Brainstorm
15%inclusion44 decks288 decks
1%synergy
Nature's Claim
15%inclusion43 decks288 decks
5%synergy
Tamiyo's Safekeeping
14%inclusion41 decks288 decks
9%synergy
Voidslime
14%inclusion39 decks288 decks
8%synergy
Archdruid's Charm
12%inclusion35 decks288 decks
6%synergy
Mystic Reflection
12%inclusion34 decks288 decks
9%synergy
Stubborn Denial
11%inclusion32 decks288 decks
8%synergy
Harrow
11%inclusion32 decks288 decks
-1%synergy
Noxious Revival
11%inclusion32 decks288 decks
5%synergy
Force of Vigor
11%inclusion32 decks288 decks
6%synergy
Planar Genesis
11%inclusion32 decks288 decks
0%synergy
Strix Serenade
11%inclusion31 decks288 decks
7%synergy
Crop Rotation
10%inclusion30 decks288 decks
-3%synergy
Resculpt
10%inclusion29 decks288 decks
4%synergy
Simic Charm
9.4%inclusion27 decks288 decks
1%synergy
Muddle the Mixture
8.0%inclusion23 decks288 decks
4%synergy
Return to Nature
7.3%inclusion21 decks288 decks
2%synergy
Narset's Reversal
7.3%inclusion21 decks288 decks
6%synergy
Snakeskin Veil
6.9%inclusion20 decks288 decks
1%synergy
Veil of Summer
6.6%inclusion19 decks288 decks
1%synergy
Flusterstorm
6.3%inclusion18 decks288 decks
-1%synergy
Disallow
6.3%inclusion18 decks288 decks
5%synergy
Eureka Moment
6.3%inclusion18 decks288 decks
-5%synergy
Dispel
6.3%inclusion18 decks288 decks
2%synergy
Legolas's Quick Reflexes
5.9%inclusion17 decks288 decks
3%synergy
Collective Resistance
5.6%inclusion16 decks288 decks
2%synergy
Tyvar's Stand
5.2%inclusion15 decks288 decks
2%synergy
Entish Restoration
5.2%inclusion15 decks288 decks
-4%synergy
Sorceries
Farseek
53%inclusion153 decks288 decks
28%synergy
Irenicus's Vile Duplication
49%inclusion140 decks288 decks
42%synergy
Skyshroud Claim
43%inclusion124 decks288 decks
34%synergy
Finale of Devastation
28%inclusion80 decks288 decks
16%synergy
Quantum Misalignment
23%inclusion66 decks288 decks
20%synergy
Triumph of the Hordes
19%inclusion56 decks288 decks
17%synergy
Overwhelming Stampede
19%inclusion54 decks288 decks
6%synergy
Bala Ged Recovery
16%inclusion47 decks288 decks
6%synergy
Explore
15%inclusion44 decks288 decks
-5%synergy
Green Sun's Zenith
14%inclusion40 decks288 decks
5%synergy
Sea Gate Restoration
14%inclusion39 decks288 decks
8%synergy
Rite of Replication
13%inclusion38 decks288 decks
6%synergy
Migration Path
11%inclusion31 decks288 decks
7%synergy
Distant Melody
10%inclusion28 decks288 decks
6%synergy
Rishkar's Expertise
9.4%inclusion27 decks288 decks
1%synergy
Shamanic Revelation
8.7%inclusion25 decks288 decks
3%synergy
Ponder
8.0%inclusion23 decks288 decks
1%synergy
Explosive Vegetation
8.0%inclusion23 decks288 decks
2%synergy
Windfall
7.3%inclusion21 decks288 decks
3%synergy
Regrowth
6.6%inclusion19 decks288 decks
3%synergy
Bridgeworks Battle
6.6%inclusion19 decks288 decks
2%synergy
Urban Evolution
6.6%inclusion19 decks288 decks
-3%synergy
Flare of Cultivation
6.3%inclusion18 decks288 decks
4%synergy
Natural Order
6.3%inclusion18 decks288 decks
5%synergy
Raise the Palisade
6.3%inclusion18 decks288 decks
0%synergy
Expropriate
5.6%inclusion16 decks288 decks
4%synergy
Doppelgang
5.6%inclusion16 decks288 decks
-1%synergy
Time Warp
5.6%inclusion16 decks288 decks
4%synergy
Harmonize
5.6%inclusion16 decks288 decks
0%synergy
Fabricate
5.2%inclusion15 decks288 decks
-2%synergy
Curse of the Swine
5.2%inclusion15 decks288 decks
-6%synergy
Utility Artifacts
Lightning Greaves
50%inclusion145 decks288 decks
29%synergy
Helm of the Host
43%inclusion125 decks288 decks
38%synergy
Swiftfoot Boots
42%inclusion121 decks288 decks
16%synergy
The One Ring
20%inclusion58 decks288 decks
12%synergy
Combine Chrysalis
17%inclusion49 decks288 decks
13%synergy
The Great Henge
14%inclusion41 decks288 decks
5%synergy
Emerald Medallion
14%inclusion41 decks288 decks
11%synergy
Mirror Box
13%inclusion36 decks288 decks
9%synergy
Sapphire Medallion
11%inclusion32 decks288 decks
8%synergy
Eldrazi Monument
10%inclusion29 decks288 decks
10%synergy
Skullclamp
7.3%inclusion21 decks288 decks
6%synergy
Banner of Kinship
7.0%inclusion20 decks284 decks
5%synergy
Idol of Oblivion
6.9%inclusion20 decks288 decks
3%synergy
Coat of Arms
6.9%inclusion20 decks288 decks
6%synergy
Winter Orb
5.6%inclusion16 decks288 decks
5%synergy
Enchantments
Tribute to the World Tree
51%inclusion148 decks288 decks
45%synergy
Mystic Remora
48%inclusion138 decks288 decks
33%synergy
Kindred Discovery
36%inclusion105 decks288 decks
27%synergy
Sylvan Library
33%inclusion95 decks288 decks
24%synergy
Growing Rites of Itlimoc
23%inclusion66 decks288 decks
17%synergy
Cryptolith Rite
20%inclusion59 decks288 decks
17%synergy
Exploration
20%inclusion58 decks288 decks
7%synergy
Primal Vigor
16%inclusion47 decks288 decks
13%synergy
Wild Growth
16%inclusion47 decks288 decks
8%synergy
Utopia Sprawl
16%inclusion45 decks288 decks
9%synergy
Defense of the Heart
14%inclusion40 decks288 decks
12%synergy
Unnatural Growth
11%inclusion33 decks288 decks
8%synergy
Beastmaster Ascension
11%inclusion33 decks288 decks
8%synergy
Burgeoning
11%inclusion33 decks288 decks
4%synergy
Garruk's Uprising
11%inclusion32 decks288 decks
-5%synergy
Carpet of Flowers
11%inclusion31 decks288 decks
8%synergy
Propaganda
11%inclusion31 decks288 decks
4%synergy
Paradox Haze
10%inclusion30 decks288 decks
10%synergy
Kenrith's Transformation
8.7%inclusion25 decks288 decks
4%synergy
Imprisoned in the Moon
8.0%inclusion23 decks288 decks
4%synergy
Asceticism
7.3%inclusion21 decks288 decks
4%synergy
Wilderness Reclamation
6.3%inclusion18 decks288 decks
-3%synergy
Omniscience
6.3%inclusion18 decks288 decks
2%synergy
Dismiss into Dream
6.3%inclusion18 decks288 decks
6%synergy
Opposition
5.9%inclusion17 decks288 decks
6%synergy
Extravagant Replication
5.2%inclusion15 decks288 decks
3%synergy
Planeswalkers
Oko, Thief of Crowns
36%inclusion105 decks288 decks
29%synergy
Utility Lands
Reliquary Tower
62%inclusion178 decks288 decks
12%synergy
Boseiju, Who Endures
47%inclusion134 decks288 decks
24%synergy
Otawara, Soaring City
36%inclusion104 decks288 decks
17%synergy
Yavimaya, Cradle of Growth
35%inclusion102 decks288 decks
13%synergy
Command Beacon
24%inclusion70 decks288 decks
20%synergy
Three Tree City
22%inclusion62 decks288 decks
16%synergy
Gaea's Cradle
19%inclusion56 decks288 decks
12%synergy
Mistrise Village
18%inclusion43 decks245 decks
7%synergy
Castle Garenbrig
16%inclusion47 decks288 decks
12%synergy
Temple of the False God
16%inclusion45 decks288 decks
0%synergy
Mystic Sanctuary
16%inclusion45 decks288 decks
3%synergy
Evendo, Waking Haven
16%inclusion24 decks154 decks
10%synergy
Mosswort Bridge
14%inclusion41 decks288 decks
-3%synergy
Alchemist's Refuge
13%inclusion38 decks288 decks
-4%synergy
Rogue's Passage
13%inclusion38 decks288 decks
-9%synergy
Urza's Saga
7.3%inclusion21 decks288 decks
2%synergy
Shifting Woodland
7.3%inclusion21 decks288 decks
1%synergy
Minamo, School at Water's Edge
6.9%inclusion20 decks288 decks
0%synergy
Castle Vantress
5.9%inclusion17 decks288 decks
-1%synergy
Scavenger Grounds
5.6%inclusion16 decks288 decks
1%synergy
Field of the Dead
5.6%inclusion16 decks288 decks
-1%synergy
Mana Artifacts
Sol Ring
95%inclusion275 decks288 decks
15%synergy
Arcane Signet
84%inclusion241 decks288 decks
21%synergy
Thought Vessel
43%inclusion124 decks288 decks
23%synergy
Talisman of Curiosity
37%inclusion106 decks288 decks
15%synergy
Simic Signet
34%inclusion99 decks288 decks
3%synergy
Chrome Mox
15%inclusion44 decks288 decks
8%synergy
Fellwar Stone
13%inclusion37 decks288 decks
3%synergy
Lotus Petal
10%inclusion29 decks288 decks
3%synergy
Thran Dynamo
8.0%inclusion23 decks288 decks
5%synergy
Mox Diamond
7.3%inclusion21 decks288 decks
2%synergy
Commander's Sphere
5.9%inclusion17 decks288 decks
-2%synergy
Basalt Monolith
5.9%inclusion17 decks288 decks
-1%synergy
Lands
Forest
93%inclusion269 decks288 decks
-2%synergy
Command Tower
93%inclusion268 decks288 decks
8%synergy
Island
93%inclusion268 decks288 decks
-2%synergy
Breeding Pool
77%inclusion222 decks288 decks
31%synergy
Rejuvenating Springs
73%inclusion209 decks288 decks
29%synergy
Hinterland Harbor
72%inclusion208 decks288 decks
13%synergy
Yavimaya Coast
63%inclusion182 decks288 decks
11%synergy
Misty Rainforest
58%inclusion168 decks288 decks
27%synergy
Dreamroot Cascade
57%inclusion163 decks288 decks
14%synergy
Barkchannel Pathway
52%inclusion150 decks288 decks
32%synergy
Flooded Grove
47%inclusion134 decks288 decks
5%synergy
Simic Growth Chamber
41%inclusion118 decks288 decks
-7%synergy
Waterlogged Grove
33%inclusion96 decks288 decks
13%synergy
Vineglimmer Snarl
32%inclusion93 decks288 decks
-6%synergy
Tropical Island
27%inclusion78 decks288 decks
13%synergy
Hedge Maze
27%inclusion78 decks288 decks
7%synergy
Temple of Mystery
26%inclusion76 decks288 decks
-12%synergy
Fabled Passage
26%inclusion75 decks288 decks
11%synergy
Willowrush Verge
25%inclusion71 decks282 decks
8%synergy
Exotic Orchard
24%inclusion68 decks288 decks
0%synergy
Prismatic Vista
19%inclusion54 decks288 decks
11%synergy
Myriad Landscape
19%inclusion54 decks288 decks
-3%synergy
Flooded Strand
18%inclusion51 decks288 decks
6%synergy
Sink into Stupor
18%inclusion51 decks288 decks
6%synergy
Botanical Sanctum
17%inclusion49 decks288 decks
4%synergy
Windswept Heath
16%inclusion47 decks288 decks
6%synergy
Bala Ged Recovery
16%inclusion47 decks288 decks
6%synergy
Scalding Tarn
15%inclusion44 decks288 decks
5%synergy
Verdant Catacombs
15%inclusion43 decks288 decks
5%synergy
Rimewood Falls
15%inclusion42 decks288 decks
5%synergy
Polluted Delta
15%inclusion42 decks288 decks
4%synergy
Evolving Wilds
14%inclusion39 decks288 decks
-12%synergy
Sea Gate Restoration
14%inclusion39 decks288 decks
8%synergy
Wooded Foothills
13%inclusion37 decks288 decks
3%synergy
Snow-Covered Forest
13%inclusion37 decks288 decks
6%synergy
Overflowing Basin
13%inclusion36 decks288 decks
-7%synergy
Snow-Covered Island
13%inclusion36 decks288 decks
6%synergy
Thornwood Falls
12%inclusion35 decks288 decks
-5%synergy
Tangled Islet
11%inclusion31 decks288 decks
-6%synergy
Terramorphic Expanse
10%inclusion30 decks288 decks
-9%synergy
Reflecting Pool
10%inclusion30 decks288 decks
7%synergy
City of Brass
10%inclusion30 decks288 decks
4%synergy
Mana Confluence
10%inclusion30 decks288 decks
5%synergy
Glasspool Mimic
10%inclusion28 decks288 decks
5%synergy
Path of Ancestry
9.0%inclusion26 decks288 decks
-8%synergy
Hydroelectric Specimen
7.6%inclusion22 decks288 decks
2%synergy
Gemstone Caverns
7.6%inclusion22 decks288 decks
2%synergy
Bridgeworks Battle
6.6%inclusion19 decks288 decks
2%synergy
Cavern of Souls
6.3%inclusion18 decks288 decks
0%synergy
Blighted Woodland
5.2%inclusion15 decks288 decks
-2%synergy
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