Koma, Cosmos Serpent (Commander) - Expensive Optimized

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #296
27decks
As CommanderAs CardAverage DeckDecks
Bracket
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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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Badgermole Cub
25%inclusion1 decks4 decks
21%synergy
The Unagi of Kyoshi Island
25%inclusion1 decks4 decks
21%synergy
Wan Shi Tong, Librarian
25%inclusion1 decks4 decks
20%synergy
High Synergy Cards
Parallel Lives
81%inclusion22 decks27 decks
76%synergy
Mana Drain
81%inclusion22 decks27 decks
66%synergy
Adrix and Nev, Twincasters
74%inclusion20 decks27 decks
66%synergy
Sakashima of a Thousand Faces
70%inclusion19 decks27 decks
65%synergy
Elemental Bond
70%inclusion19 decks27 decks
65%synergy
Birds of Paradise
89%inclusion24 decks27 decks
61%synergy
Spark Double
70%inclusion19 decks27 decks
61%synergy
Sakashima the Impostor
63%inclusion17 decks27 decks
60%synergy
Tribute to the World Tree
67%inclusion18 decks27 decks
60%synergy
Force of Negation
67%inclusion18 decks27 decks
58%synergy
Top Cards
Mystic Remora
70%inclusion19 decks27 decks
55%synergy
Sylvan Library
67%inclusion18 decks27 decks
57%synergy
Counterspell
67%inclusion18 decks27 decks
17%synergy
Doubling Season
63%inclusion17 decks27 decks
53%synergy
Heroic Intervention
63%inclusion17 decks27 decks
33%synergy
Three Visits
63%inclusion17 decks27 decks
40%synergy
Nature's Lore
63%inclusion17 decks27 decks
33%synergy
Craterhoof Behemoth
63%inclusion17 decks27 decks
54%synergy
Consecrated Sphinx
59%inclusion16 decks27 decks
50%synergy
Beast Within
59%inclusion16 decks27 decks
9%synergy
Game Changers
Rhystic Study
96%inclusion26 decks27 decks
74%synergy
Gaea's Cradle
96%inclusion26 decks27 decks
89%synergy
Cyclonic Rift
93%inclusion25 decks27 decks
66%synergy
Force of Will
85%inclusion23 decks27 decks
75%synergy
Fierce Guardianship
85%inclusion23 decks27 decks
68%synergy
Ancient Tomb
81%inclusion22 decks27 decks
72%synergy
Worldly Tutor
74%inclusion20 decks27 decks
59%synergy
Chrome Mox
74%inclusion20 decks27 decks
67%synergy
Mana Vault
67%inclusion18 decks27 decks
60%synergy
The One Ring
67%inclusion18 decks27 decks
59%synergy
Creatures
Koma, World-Eater
54%inclusion14 decks26 decks
41%synergy
Elvish Mystic
52%inclusion14 decks27 decks
28%synergy
Llanowar Elves
52%inclusion14 decks27 decks
24%synergy
Serpent of Yawning Depths
52%inclusion14 decks27 decks
45%synergy
Delighted Halfling
52%inclusion14 decks27 decks
40%synergy
Aesi, Tyrant of Gyre Strait
48%inclusion13 decks27 decks
31%synergy
Roaming Throne
44%inclusion12 decks27 decks
36%synergy
Seedborn Muse
44%inclusion12 decks27 decks
29%synergy
Enduring Vitality
44%inclusion12 decks27 decks
37%synergy
Spawning Kraken
44%inclusion12 decks27 decks
37%synergy
Fyndhorn Elves
41%inclusion11 decks27 decks
25%synergy
Junk Winder
37%inclusion10 decks27 decks
30%synergy
Kinnan, Bonder Prodigy
30%inclusion8 decks27 decks
26%synergy
Hullbreaker Horror
30%inclusion8 decks27 decks
12%synergy
Garruk's Packleader
26%inclusion7 decks27 decks
24%synergy
Fanatic of Rhonas
26%inclusion7 decks27 decks
20%synergy
Azusa, Lost but Seeking
26%inclusion7 decks27 decks
12%synergy
Chameleon, Master of Disguise
25%inclusion2 decks8 decks
23%synergy
Bloom Tender
22%inclusion6 decks27 decks
18%synergy
Circle of Dreams Druid
22%inclusion6 decks27 decks
20%synergy
Arixmethes, Slumbering Isle
22%inclusion6 decks27 decks
9%synergy
Thrasios, Triton Hero
19%inclusion5 decks27 decks
11%synergy
Eternal Witness
19%inclusion5 decks27 decks
-3%synergy
Vorinclex, Voice of Hunger
19%inclusion5 decks27 decks
15%synergy
Ledger Shredder
19%inclusion5 decks27 decks
17%synergy
Tatyova, Benthic Druid
15%inclusion4 decks27 decks
-16%synergy
Elvish Spirit Guide
15%inclusion4 decks27 decks
10%synergy
Lotus Cobra
15%inclusion4 decks27 decks
1%synergy
Scute Swarm
15%inclusion4 decks27 decks
-6%synergy
Ohran Frostfang
15%inclusion4 decks27 decks
11%synergy
Arbor Elf
15%inclusion4 decks27 decks
8%synergy
Spellskite
15%inclusion4 decks27 decks
9%synergy
Faerie Mastermind
15%inclusion4 decks27 decks
10%synergy
Selvala, Heart of the Wilds
11%inclusion3 decks27 decks
8%synergy
Kiora's Follower
11%inclusion3 decks27 decks
-4%synergy
Pollywog Prodigy
11%inclusion3 decks27 decks
4%synergy
Archetype of Imagination
11%inclusion3 decks27 decks
7%synergy
Toski, Bearer of Secrets
11%inclusion3 decks27 decks
8%synergy
Dryad of the Ilysian Grove
11%inclusion3 decks27 decks
1%synergy
Nezahal, Primal Tide
11%inclusion3 decks27 decks
0%synergy
Icetill Explorer
9.1%inclusion1 decks11 decks
4%synergy
Starwinder
9.1%inclusion1 decks11 decks
2%synergy
Gene Pollinator
9.1%inclusion1 decks11 decks
9%synergy
Frenzied Baloth
8.3%inclusion1 decks12 decks
7%synergy
Sab-Sunen, Luxa Embodied
7.7%inclusion2 decks26 decks
6%synergy
High Fae Trickster
7.7%inclusion2 decks26 decks
4%synergy
Troyan, Gutsy Explorer
7.4%inclusion2 decks27 decks
4%synergy
Thassa's Oracle
7.4%inclusion2 decks27 decks
2%synergy
Xolatoyac, the Smiling Flood
7.4%inclusion2 decks27 decks
0%synergy
Inga and Esika
7.4%inclusion2 decks27 decks
5%synergy
Instants
Swan Song
59%inclusion16 decks27 decks
40%synergy
Mystical Tutor
56%inclusion15 decks27 decks
46%synergy
An Offer You Can't Refuse
48%inclusion13 decks27 decks
25%synergy
Crop Rotation
44%inclusion12 decks27 decks
31%synergy
Pongify
41%inclusion11 decks27 decks
16%synergy
Arcane Denial
41%inclusion11 decks27 decks
18%synergy
Pact of Negation
30%inclusion8 decks27 decks
22%synergy
Rapid Hybridization
26%inclusion7 decks27 decks
0%synergy
Archdruid's Charm
26%inclusion7 decks27 decks
20%synergy
Force of Vigor
26%inclusion7 decks27 decks
21%synergy
Sink into Stupor
26%inclusion7 decks27 decks
14%synergy
Double Major
26%inclusion7 decks27 decks
17%synergy
Negate
22%inclusion6 decks27 decks
-4%synergy
Krosan Grip
22%inclusion6 decks27 decks
14%synergy
Flusterstorm
22%inclusion6 decks27 decks
16%synergy
Return of the Wildspeaker
19%inclusion5 decks27 decks
8%synergy
Growth Spiral
19%inclusion5 decks27 decks
-26%synergy
Second Harvest
19%inclusion5 decks27 decks
12%synergy
Mindbreak Trap
19%inclusion5 decks27 decks
14%synergy
Mental Misstep
15%inclusion4 decks27 decks
9%synergy
Brainstorm
15%inclusion4 decks27 decks
0%synergy
Voidslime
15%inclusion4 decks27 decks
10%synergy
Muddle the Mixture
11%inclusion3 decks27 decks
7%synergy
Stubborn Denial
11%inclusion3 decks27 decks
9%synergy
Resculpt
11%inclusion3 decks27 decks
5%synergy
Noxious Revival
11%inclusion3 decks27 decks
5%synergy
Legolas's Quick Reflexes
11%inclusion3 decks27 decks
9%synergy
Dispel
11%inclusion3 decks27 decks
6%synergy
Veil of Summer
7.4%inclusion2 decks27 decks
1%synergy
Chord of Calling
7.4%inclusion2 decks27 decks
0%synergy
Nature's Claim
7.4%inclusion2 decks27 decks
-3%synergy
Harrow
7.4%inclusion2 decks27 decks
-5%synergy
Strix Serenade
7.4%inclusion2 decks27 decks
4%synergy
Keep Watch
7.4%inclusion2 decks27 decks
7%synergy
Into the Flood Maw
7.4%inclusion2 decks27 decks
3%synergy
Plasm Capture
7.4%inclusion2 decks27 decks
4%synergy
Stifle
7.4%inclusion2 decks27 decks
7%synergy
Dramatic Reversal
7.4%inclusion2 decks27 decks
3%synergy
Miscast
7.4%inclusion2 decks27 decks
5%synergy
Reality Shift
7.4%inclusion2 decks27 decks
-7%synergy
Collective Resistance
7.4%inclusion2 decks27 decks
4%synergy
Abjure
7.4%inclusion2 decks27 decks
7%synergy
Sorceries
Finale of Devastation
52%inclusion14 decks27 decks
40%synergy
Cultivate
52%inclusion14 decks27 decks
5%synergy
Farseek
48%inclusion13 decks27 decks
24%synergy
Irenicus's Vile Duplication
48%inclusion13 decks27 decks
42%synergy
Whelming Wave
44%inclusion12 decks27 decks
33%synergy
Kodama's Reach
41%inclusion11 decks27 decks
4%synergy
Rampant Growth
37%inclusion10 decks27 decks
-4%synergy
Green Sun's Zenith
33%inclusion9 decks27 decks
25%synergy
Skyshroud Claim
33%inclusion9 decks27 decks
24%synergy
Sea Gate Restoration
26%inclusion7 decks27 decks
20%synergy
Explore
22%inclusion6 decks27 decks
2%synergy
Natural Order
19%inclusion5 decks27 decks
17%synergy
Sylvan Tutor
19%inclusion5 decks27 decks
17%synergy
Quantum Misalignment
15%inclusion4 decks27 decks
12%synergy
Triumph of the Hordes
15%inclusion4 decks27 decks
12%synergy
Overwhelming Stampede
15%inclusion4 decks27 decks
3%synergy
Migration Path
11%inclusion3 decks27 decks
8%synergy
Lórien Revealed
11%inclusion3 decks27 decks
8%synergy
Doppelgang
11%inclusion3 decks27 decks
5%synergy
Bala Ged Recovery
11%inclusion3 decks27 decks
1%synergy
Raise the Palisade
11%inclusion3 decks27 decks
5%synergy
Windfall
7.4%inclusion2 decks27 decks
3%synergy
Last March of the Ents
7.4%inclusion2 decks27 decks
4%synergy
Turntimber Symbiosis
7.4%inclusion2 decks27 decks
5%synergy
Nanogene Conversion
7.4%inclusion2 decks27 decks
7%synergy
Fabricate
7.4%inclusion2 decks27 decks
1%synergy
Time Spiral
7.4%inclusion2 decks27 decks
7%synergy
Ezuri's Predation
7.4%inclusion2 decks27 decks
0%synergy
Personal Tutor
7.4%inclusion2 decks27 decks
6%synergy
Urban Evolution
7.4%inclusion2 decks27 decks
-2%synergy
Utility Artifacts
Helm of the Host
48%inclusion13 decks27 decks
43%synergy
Lightning Greaves
41%inclusion11 decks27 decks
19%synergy
The Great Henge
26%inclusion7 decks27 decks
17%synergy
Sensei's Divining Top
19%inclusion5 decks27 decks
15%synergy
Static Orb
15%inclusion4 decks27 decks
15%synergy
Winter Orb
15%inclusion4 decks27 decks
15%synergy
Combine Chrysalis
11%inclusion3 decks27 decks
7%synergy
Swiftfoot Boots
11%inclusion3 decks27 decks
-15%synergy
Eldrazi Monument
11%inclusion3 decks27 decks
11%synergy
Skullclamp
7.4%inclusion2 decks27 decks
6%synergy
Phyrexian Altar
7.4%inclusion2 decks27 decks
7%synergy
Whispersilk Cloak
7.4%inclusion2 decks27 decks
5%synergy
Isochron Scepter
7.4%inclusion2 decks27 decks
5%synergy
Enchantments
Kindred Discovery
26%inclusion7 decks27 decks
16%synergy
Utopia Sprawl
26%inclusion7 decks27 decks
19%synergy
Cryptolith Rite
26%inclusion7 decks27 decks
23%synergy
Exploration
22%inclusion6 decks27 decks
9%synergy
Burgeoning
22%inclusion6 decks27 decks
15%synergy
Wild Growth
22%inclusion6 decks27 decks
13%synergy
Carpet of Flowers
15%inclusion4 decks27 decks
12%synergy
Growing Rites of Itlimoc
15%inclusion4 decks27 decks
9%synergy
Propaganda
11%inclusion3 decks27 decks
4%synergy
Defense of the Heart
11%inclusion3 decks27 decks
9%synergy
Impostor Syndrome
11%inclusion1 decks9 decks
9%synergy
Imprisoned in the Moon
7.4%inclusion2 decks27 decks
3%synergy
Pattern of Rebirth
7.4%inclusion2 decks27 decks
7%synergy
Earthcraft
7.4%inclusion2 decks27 decks
7%synergy
Stasis
7.4%inclusion2 decks27 decks
7%synergy
Opposition
7.4%inclusion2 decks27 decks
7%synergy
Unnatural Growth
7.4%inclusion2 decks27 decks
4%synergy
Kenrith's Transformation
7.4%inclusion2 decks27 decks
3%synergy
Planeswalkers
Oko, Thief of Crowns
26%inclusion7 decks27 decks
19%synergy
Utility Lands
Boseiju, Who Endures
74%inclusion20 decks27 decks
52%synergy
Otawara, Soaring City
70%inclusion19 decks27 decks
51%synergy
Yavimaya, Cradle of Growth
63%inclusion17 decks27 decks
41%synergy
Reliquary Tower
56%inclusion15 decks27 decks
6%synergy
Three Tree City
41%inclusion11 decks27 decks
36%synergy
Command Beacon
37%inclusion10 decks27 decks
33%synergy
Evendo, Waking Haven
25%inclusion3 decks12 decks
20%synergy
Wasteland
22%inclusion6 decks27 decks
21%synergy
Urza's Saga
22%inclusion6 decks27 decks
17%synergy
Strip Mine
22%inclusion6 decks27 decks
19%synergy
Mistrise Village
21%inclusion5 decks24 decks
10%synergy
Alchemist's Refuge
19%inclusion5 decks27 decks
1%synergy
Castle Garenbrig
19%inclusion5 decks27 decks
14%synergy
Shifting Woodland
19%inclusion5 decks27 decks
12%synergy
Minamo, School at Water's Edge
15%inclusion4 decks27 decks
8%synergy
Field of the Dead
15%inclusion4 decks27 decks
9%synergy
Dryad Arbor
15%inclusion4 decks27 decks
9%synergy
Rogue's Passage
15%inclusion4 decks27 decks
-7%synergy
Mystic Sanctuary
11%inclusion3 decks27 decks
-2%synergy
Yavimaya Hollow
11%inclusion3 decks27 decks
10%synergy
Mosswort Bridge
7.4%inclusion2 decks27 decks
-10%synergy
Nykthos, Shrine to Nyx
7.4%inclusion2 decks27 decks
5%synergy
Maze of Ith
7.4%inclusion2 decks27 decks
4%synergy
Scavenger Grounds
7.4%inclusion2 decks27 decks
3%synergy
Mana Artifacts
Sol Ring
100%inclusion27 decks27 decks
19%synergy
Arcane Signet
89%inclusion24 decks27 decks
26%synergy
Mox Diamond
56%inclusion15 decks27 decks
50%synergy
Lotus Petal
48%inclusion13 decks27 decks
41%synergy
Talisman of Curiosity
48%inclusion13 decks27 decks
27%synergy
Thought Vessel
37%inclusion10 decks27 decks
17%synergy
Grim Monolith
26%inclusion7 decks27 decks
23%synergy
Fellwar Stone
19%inclusion5 decks27 decks
9%synergy
Simic Signet
19%inclusion5 decks27 decks
-14%synergy
Basalt Monolith
11%inclusion3 decks27 decks
4%synergy
Mox Opal
11%inclusion3 decks27 decks
7%synergy
Decanter of Endless Water
7.4%inclusion2 decks27 decks
2%synergy
Mox Amber
7.4%inclusion2 decks27 decks
1%synergy
Lands
Command Tower
100%inclusion27 decks27 decks
15%synergy
Forest
96%inclusion26 decks27 decks
1%synergy
Island
96%inclusion26 decks27 decks
1%synergy
Breeding Pool
93%inclusion25 decks27 decks
47%synergy
Tropical Island
93%inclusion25 decks27 decks
78%synergy
Misty Rainforest
85%inclusion23 decks27 decks
54%synergy
Rejuvenating Springs
85%inclusion23 decks27 decks
41%synergy
Yavimaya Coast
63%inclusion17 decks27 decks
11%synergy
Barkchannel Pathway
59%inclusion16 decks27 decks
39%synergy
Windswept Heath
56%inclusion15 decks27 decks
45%synergy
Flooded Strand
52%inclusion14 decks27 decks
41%synergy
Hinterland Harbor
52%inclusion14 decks27 decks
-7%synergy
Wooded Foothills
48%inclusion13 decks27 decks
39%synergy
Verdant Catacombs
48%inclusion13 decks27 decks
39%synergy
Mana Confluence
48%inclusion13 decks27 decks
42%synergy
Prismatic Vista
44%inclusion12 decks27 decks
37%synergy
Polluted Delta
44%inclusion12 decks27 decks
34%synergy
Scalding Tarn
44%inclusion12 decks27 decks
35%synergy
Dreamroot Cascade
44%inclusion12 decks27 decks
3%synergy
Waterlogged Grove
41%inclusion11 decks27 decks
20%synergy
City of Brass
41%inclusion11 decks27 decks
35%synergy
Hedge Maze
41%inclusion11 decks27 decks
21%synergy
Gemstone Caverns
33%inclusion9 decks27 decks
27%synergy
Flooded Grove
30%inclusion8 decks27 decks
-11%synergy
Sink into Stupor
26%inclusion7 decks27 decks
14%synergy
Sea Gate Restoration
26%inclusion7 decks27 decks
20%synergy
Simic Growth Chamber
22%inclusion6 decks27 decks
-26%synergy
Fabled Passage
22%inclusion6 decks27 decks
8%synergy
Exotic Orchard
22%inclusion6 decks27 decks
-2%synergy
Vineglimmer Snarl
19%inclusion5 decks27 decks
-20%synergy
Willowrush Verge
15%inclusion4 decks26 decks
-1%synergy
Reflecting Pool
15%inclusion4 decks27 decks
12%synergy
Terramorphic Expanse
11%inclusion3 decks27 decks
-9%synergy
Talon Gates of Madara
11%inclusion3 decks27 decks
3%synergy
Evolving Wilds
11%inclusion3 decks27 decks
-14%synergy
Bala Ged Recovery
11%inclusion3 decks27 decks
1%synergy
Snow-Covered Island
7.4%inclusion2 decks27 decks
1%synergy
Snow-Covered Forest
7.4%inclusion2 decks27 decks
1%synergy
Temple of Mystery
7.4%inclusion2 decks27 decks
-31%synergy
Turntimber Symbiosis
7.4%inclusion2 decks27 decks
5%synergy
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