Koma, Cosmos Serpent (Commander) - Budget Optimized

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #300
27decks
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
33%inclusion1 decks3 decks
28%synergy
Aang's Journey
8.3%inclusion1 decks12 decks
8%synergy
High Synergy Cards
Serpent of Yawning Depths
63%inclusion17 decks27 decks
57%synergy
Koma, World-Eater
67%inclusion18 decks27 decks
53%synergy
Adrix and Nev, Twincasters
59%inclusion16 decks27 decks
51%synergy
Spark Double
59%inclusion16 decks27 decks
50%synergy
Junk Winder
56%inclusion15 decks27 decks
49%synergy
Murkfiend Liege
52%inclusion14 decks27 decks
37%synergy
Ohran Frostfang
41%inclusion11 decks27 decks
37%synergy
Whelming Wave
48%inclusion13 decks27 decks
37%synergy
Double Major
44%inclusion12 decks27 decks
36%synergy
Elemental Bond
41%inclusion11 decks27 decks
35%synergy
Top Cards
Cultivate
78%inclusion21 decks27 decks
31%synergy
Kodama's Reach
67%inclusion18 decks27 decks
30%synergy
Counterspell
67%inclusion18 decks27 decks
17%synergy
Rampant Growth
63%inclusion17 decks27 decks
22%synergy
Growth Spiral
56%inclusion15 decks27 decks
11%synergy
Aesi, Tyrant of Gyre Strait
52%inclusion14 decks27 decks
35%synergy
Tatyova, Benthic Druid
52%inclusion14 decks27 decks
21%synergy
Llanowar Elves
52%inclusion14 decks27 decks
24%synergy
Arixmethes, Slumbering Isle
48%inclusion13 decks27 decks
35%synergy
Beast Within
48%inclusion13 decks27 decks
-2%synergy
Game Changers
Seedborn Muse
26%inclusion7 decks27 decks
10%synergy
Rhystic Study
26%inclusion7 decks27 decks
4%synergy
Worldly Tutor
19%inclusion5 decks27 decks
3%synergy
Cyclonic Rift
19%inclusion5 decks27 decks
-7%synergy
Mystical Tutor
15%inclusion4 decks27 decks
6%synergy
Narset, Parter of Veils
11%inclusion3 decks27 decks
10%synergy
Consecrated Sphinx
11%inclusion3 decks27 decks
2%synergy
Fierce Guardianship
7.4%inclusion2 decks27 decks
-10%synergy
Creatures
Hullbreaker Horror
44%inclusion12 decks27 decks
27%synergy
Elvish Mystic
37%inclusion10 decks27 decks
13%synergy
Sakura-Tribe Elder
37%inclusion10 decks27 decks
18%synergy
Sakashima the Impostor
33%inclusion9 decks27 decks
31%synergy
Slinn Voda, the Rising Deep
33%inclusion9 decks27 decks
27%synergy
Sakashima of a Thousand Faces
33%inclusion9 decks27 decks
28%synergy
Archetype of Imagination
30%inclusion8 decks27 decks
25%synergy
Spawning Kraken
30%inclusion8 decks27 decks
22%synergy
Scourge of Fleets
26%inclusion7 decks27 decks
18%synergy
Esix, Fractal Bloom
26%inclusion7 decks27 decks
22%synergy
Garruk's Packleader
26%inclusion7 decks27 decks
24%synergy
Birds of Paradise
26%inclusion7 decks27 decks
-2%synergy
Fyndhorn Elves
22%inclusion6 decks27 decks
7%synergy
Solemn Simulacrum
22%inclusion6 decks27 decks
16%synergy
Xolatoyac, the Smiling Flood
22%inclusion6 decks27 decks
15%synergy
Octomancer
19%inclusion5 decks27 decks
14%synergy
Coiling Oracle
19%inclusion5 decks27 decks
5%synergy
Fanatic of Rhonas
19%inclusion5 decks27 decks
13%synergy
Nezahal, Primal Tide
19%inclusion5 decks27 decks
8%synergy
Curiosity Crafter
19%inclusion5 decks27 decks
15%synergy
Stormtide Leviathan
19%inclusion5 decks27 decks
13%synergy
Enduring Vitality
19%inclusion5 decks27 decks
11%synergy
Progenitor Mimic
19%inclusion5 decks27 decks
14%synergy
Reclamation Sage
15%inclusion4 decks27 decks
1%synergy
Craterhoof Behemoth
15%inclusion4 decks27 decks
5%synergy
Auton Soldier
15%inclusion4 decks27 decks
12%synergy
Kiora, Sovereign of the Deep
15%inclusion4 decks27 decks
13%synergy
Rampaging Baloths
15%inclusion4 decks27 decks
-2%synergy
Inga and Esika
15%inclusion4 decks27 decks
12%synergy
Loot, Exuberant Explorer
15%inclusion4 decks27 decks
7%synergy
Wonder
15%inclusion4 decks27 decks
12%synergy
Nadir Kraken
15%inclusion4 decks27 decks
11%synergy
Clever Impersonator
15%inclusion4 decks27 decks
10%synergy
Undercover Operative
11%inclusion3 decks27 decks
10%synergy
Roaming Throne
11%inclusion3 decks27 decks
3%synergy
Enduring Curiosity
11%inclusion3 decks27 decks
8%synergy
Grappling Kraken
11%inclusion3 decks27 decks
7%synergy
Eternal Witness
11%inclusion3 decks27 decks
-10%synergy
Moritte of the Frost
11%inclusion3 decks27 decks
10%synergy
Tireless Provisioner
11%inclusion3 decks27 decks
-4%synergy
Benthic Anomaly
11%inclusion3 decks27 decks
9%synergy
Maraleaf Pixie
11%inclusion3 decks27 decks
5%synergy
Jaheira, Friend of the Forest
11%inclusion3 decks27 decks
7%synergy
Avenger of Zendikar
11%inclusion3 decks27 decks
-7%synergy
Saryth, the Viper's Fang
11%inclusion3 decks27 decks
9%synergy
Kiora, the Rising Tide
11%inclusion3 decks27 decks
8%synergy
Kinnan, Bonder Prodigy
11%inclusion3 decks27 decks
8%synergy
Glasspool Mimic
11%inclusion3 decks27 decks
7%synergy
Kodama of the East Tree
11%inclusion3 decks27 decks
5%synergy
Reef Worm
11%inclusion3 decks27 decks
7%synergy
Instants
Negate
37%inclusion10 decks27 decks
11%synergy
Reality Shift
37%inclusion10 decks27 decks
22%synergy
Second Harvest
33%inclusion9 decks27 decks
27%synergy
Pongify
30%inclusion8 decks27 decks
5%synergy
Heroic Intervention
26%inclusion7 decks27 decks
-4%synergy
Arcane Denial
26%inclusion7 decks27 decks
3%synergy
Rapid Hybridization
22%inclusion6 decks27 decks
-4%synergy
Return of the Wildspeaker
22%inclusion6 decks27 decks
12%synergy
An Offer You Can't Refuse
19%inclusion5 decks27 decks
-5%synergy
Decisive Denial
19%inclusion5 decks27 decks
13%synergy
Brainstorm
19%inclusion5 decks27 decks
4%synergy
Planar Genesis
19%inclusion5 decks27 decks
8%synergy
Snakeskin Veil
19%inclusion5 decks27 decks
13%synergy
Krosan Grip
19%inclusion5 decks27 decks
11%synergy
Refute
15%inclusion4 decks27 decks
13%synergy
Plasm Capture
15%inclusion4 decks27 decks
11%synergy
Incubation // Incongruity
11%inclusion3 decks27 decks
9%synergy
Mystic Reflection
11%inclusion3 decks27 decks
9%synergy
Swan Song
11%inclusion3 decks27 decks
-8%synergy
Wash Away
11%inclusion3 decks27 decks
10%synergy
Voidslime
11%inclusion3 decks27 decks
6%synergy
Archdruid's Charm
11%inclusion3 decks27 decks
5%synergy
Annul
11%inclusion3 decks27 decks
11%synergy
Eureka Moment
11%inclusion3 decks27 decks
0%synergy
Harrow
11%inclusion3 decks27 decks
-1%synergy
Mana Drain
11%inclusion3 decks27 decks
-5%synergy
Strix Serenade
11%inclusion3 decks27 decks
7%synergy
Noxious Revival
11%inclusion3 decks27 decks
5%synergy
Snap
11%inclusion3 decks27 decks
7%synergy
Hide on the Ceiling
10%inclusion1 decks10 decks
9%synergy
Disdainful Stroke
7.4%inclusion2 decks27 decks
6%synergy
Evolution Charm
7.4%inclusion2 decks27 decks
7%synergy
Opt
7.4%inclusion2 decks27 decks
0%synergy
Resculpt
7.4%inclusion2 decks27 decks
1%synergy
Saw It Coming
7.4%inclusion2 decks27 decks
6%synergy
Simic Charm
7.4%inclusion2 decks27 decks
-1%synergy
Khalni Ambush
7.4%inclusion2 decks27 decks
6%synergy
Tyvar's Stand
7.4%inclusion2 decks27 decks
5%synergy
Keep Safe
7.4%inclusion2 decks27 decks
7%synergy
Unsummon
7.4%inclusion2 decks27 decks
6%synergy
Blinding Fog
7.4%inclusion2 decks27 decks
7%synergy
Time Stop
7.4%inclusion2 decks27 decks
7%synergy
Aetherize
7.4%inclusion2 decks27 decks
-4%synergy
Bane's Contingency
7.4%inclusion2 decks27 decks
7%synergy
Prishe's Wanderings
5.9%inclusion1 decks17 decks
5%synergy
Sorceries
Nature's Lore
37%inclusion10 decks27 decks
7%synergy
Farseek
33%inclusion9 decks27 decks
9%synergy
Rite of Replication
33%inclusion9 decks27 decks
26%synergy
Irenicus's Vile Duplication
33%inclusion9 decks27 decks
27%synergy
Skyshroud Claim
30%inclusion8 decks27 decks
21%synergy
Explore
26%inclusion7 decks27 decks
6%synergy
Overwhelming Stampede
15%inclusion4 decks27 decks
3%synergy
Three Visits
15%inclusion4 decks27 decks
-8%synergy
Doppelgang
15%inclusion4 decks27 decks
8%synergy
Migration Path
15%inclusion4 decks27 decks
11%synergy
Urban Evolution
15%inclusion4 decks27 decks
5%synergy
Finale of Devastation
11%inclusion3 decks27 decks
-1%synergy
Titania's Command
11%inclusion3 decks27 decks
10%synergy
Aggressive Biomancy
11%inclusion3 decks27 decks
6%synergy
River's Rebuke
11%inclusion3 decks27 decks
8%synergy
Bala Ged Recovery
11%inclusion3 decks27 decks
1%synergy
Quantum Misalignment
11%inclusion3 decks27 decks
8%synergy
Explosive Vegetation
11%inclusion3 decks27 decks
5%synergy
Circuitous Route
11%inclusion3 decks27 decks
9%synergy
Rishkar's Expertise
11%inclusion3 decks27 decks
3%synergy
Search for Tomorrow
11%inclusion3 decks27 decks
6%synergy
Shamanic Revelation
11%inclusion3 decks27 decks
6%synergy
Preposterous Proportions
7.4%inclusion2 decks27 decks
6%synergy
Oversimplify
7.4%inclusion2 decks27 decks
3%synergy
Broken Bond
7.4%inclusion2 decks27 decks
3%synergy
Ravenform
7.4%inclusion2 decks27 decks
3%synergy
Map the Frontier
7.4%inclusion2 decks27 decks
6%synergy
Gitaxian Probe
7.4%inclusion2 decks27 decks
5%synergy
Atraxa's Fall
7.4%inclusion2 decks27 decks
7%synergy
Distant Melody
7.4%inclusion2 decks27 decks
4%synergy
Nissa's Pilgrimage
7.4%inclusion2 decks27 decks
6%synergy
Curse of the Swine
7.4%inclusion2 decks27 decks
-4%synergy
Harmonize
7.4%inclusion2 decks27 decks
2%synergy
Personal Tutor
7.4%inclusion2 decks27 decks
6%synergy
Bushwhack
7.4%inclusion2 decks27 decks
5%synergy
Regrowth
7.4%inclusion2 decks27 decks
4%synergy
Utility Artifacts
Swiftfoot Boots
44%inclusion12 decks27 decks
19%synergy
Emerald Medallion
30%inclusion8 decks27 decks
27%synergy
Mirror Box
26%inclusion7 decks27 decks
22%synergy
Combine Chrysalis
26%inclusion7 decks27 decks
22%synergy
Lightning Greaves
26%inclusion7 decks27 decks
4%synergy
Sapphire Medallion
22%inclusion6 decks27 decks
19%synergy
Helm of the Host
22%inclusion6 decks27 decks
17%synergy
Eldrazi Monument
19%inclusion5 decks27 decks
18%synergy
Giant's Amulet
15%inclusion4 decks27 decks
15%synergy
Torpor Orb
11%inclusion3 decks27 decks
11%synergy
Banner of Kinship
11%inclusion3 decks27 decks
9%synergy
Winter Moon
11%inclusion3 decks27 decks
11%synergy
Weathered Runestone
7.4%inclusion2 decks27 decks
7%synergy
Akroma's Memorial
7.4%inclusion2 decks27 decks
6%synergy
Idol of Oblivion
7.4%inclusion2 decks27 decks
4%synergy
Bident of Thassa
7.4%inclusion2 decks27 decks
0%synergy
Wayfarer's Bauble
7.4%inclusion2 decks27 decks
6%synergy
Bow of Nylea
7.4%inclusion2 decks27 decks
7%synergy
Whispersilk Cloak
7.4%inclusion2 decks27 decks
5%synergy
Glaring Spotlight
7.4%inclusion2 decks27 decks
7%synergy
Vexing Bauble
7.4%inclusion2 decks27 decks
7%synergy
Coat of Arms
7.4%inclusion2 decks27 decks
6%synergy
Larval Scoutlander
7.1%inclusion1 decks14 decks
7%synergy
The Water Crystal
5.9%inclusion1 decks17 decks
5%synergy
Enchantments
Doubling Season
41%inclusion11 decks27 decks
31%synergy
Parallel Lives
41%inclusion11 decks27 decks
35%synergy
Tribute to the World Tree
37%inclusion10 decks27 decks
31%synergy
Garruk's Uprising
30%inclusion8 decks27 decks
13%synergy
Primal Vigor
26%inclusion7 decks27 decks
23%synergy
Kindred Discovery
22%inclusion6 decks27 decks
12%synergy
Imprisoned in the Moon
19%inclusion5 decks27 decks
14%synergy
Asceticism
19%inclusion5 decks27 decks
15%synergy
Beastmaster Ascension
19%inclusion5 decks27 decks
15%synergy
Unnatural Growth
15%inclusion4 decks27 decks
11%synergy
Paradox Haze
15%inclusion4 decks27 decks
14%synergy
Growing Rites of Itlimoc
15%inclusion4 decks27 decks
9%synergy
Defense of the Heart
15%inclusion4 decks27 decks
13%synergy
Propaganda
15%inclusion4 decks27 decks
8%synergy
Wild Growth
15%inclusion4 decks27 decks
6%synergy
Mystic Remora
15%inclusion4 decks27 decks
-1%synergy
Freed from the Real
11%inclusion3 decks27 decks
6%synergy
Kenrith's Transformation
11%inclusion3 decks27 decks
7%synergy
In Search of Greatness
11%inclusion3 decks27 decks
9%synergy
Cryptolith Rite
11%inclusion3 decks27 decks
8%synergy
Kiora Bests the Sea God
11%inclusion3 decks27 decks
9%synergy
Utopia Sprawl
11%inclusion3 decks27 decks
5%synergy
Vesuvan Duplimancy
7.4%inclusion2 decks27 decks
5%synergy
Copy Enchantment
7.4%inclusion2 decks27 decks
6%synergy
Stasis
7.4%inclusion2 decks27 decks
7%synergy
Back to Basics
7.4%inclusion2 decks27 decks
7%synergy
Spelunking
7.4%inclusion2 decks27 decks
2%synergy
Extravagant Replication
7.4%inclusion2 decks27 decks
5%synergy
Hall of Gemstone
7.4%inclusion2 decks27 decks
7%synergy
Stasis Field
7.4%inclusion2 decks27 decks
7%synergy
Retreat to Coralhelm
7.4%inclusion2 decks27 decks
-2%synergy
Unable to Scream
7.4%inclusion2 decks27 decks
6%synergy
Utter Insignificance
7.4%inclusion2 decks27 decks
7%synergy
Nature's Will
7.4%inclusion2 decks27 decks
6%synergy
Mana Reflection
7.4%inclusion2 decks27 decks
3%synergy
Witness Protection
7.4%inclusion2 decks27 decks
5%synergy
Fertile Ground
7.4%inclusion2 decks27 decks
6%synergy
Confounding Conundrum
7.4%inclusion2 decks27 decks
7%synergy
Moonlit Meditation
7.1%inclusion1 decks14 decks
6%synergy
Battles
Invasion of Segovia
7.4%inclusion2 decks27 decks
7%synergy
Planeswalkers
Oko, Thief of Crowns
22%inclusion6 decks27 decks
15%synergy
Tamiyo, Compleated Sage
11%inclusion3 decks27 decks
10%synergy
Kiora, Master of the Depths
11%inclusion3 decks27 decks
9%synergy
Nissa, Who Shakes the World
11%inclusion3 decks27 decks
8%synergy
Kiora, the Crashing Wave
11%inclusion3 decks27 decks
8%synergy
Nissa, Steward of Elements
7.4%inclusion2 decks27 decks
3%synergy
Utility Lands
Mosswort Bridge
41%inclusion11 decks27 decks
23%synergy
Rogue's Passage
37%inclusion10 decks27 decks
15%synergy
Reliquary Tower
33%inclusion9 decks27 decks
-17%synergy
Temple of the False God
19%inclusion5 decks27 decks
3%synergy
Castle Vantress
15%inclusion4 decks27 decks
8%synergy
Mystic Sanctuary
11%inclusion3 decks27 decks
-1%synergy
Alchemist's Refuge
7.4%inclusion2 decks27 decks
-10%synergy
Castle Garenbrig
7.4%inclusion2 decks27 decks
3%synergy
Tranquil Thicket
7.4%inclusion2 decks27 decks
3%synergy
Mana Artifacts
Sol Ring
81%inclusion22 decks27 decks
1%synergy
Arcane Signet
74%inclusion20 decks27 decks
11%synergy
Thought Vessel
33%inclusion9 decks27 decks
13%synergy
Simic Signet
30%inclusion8 decks27 decks
-2%synergy
Talisman of Curiosity
22%inclusion6 decks27 decks
1%synergy
Sky Diamond
7.4%inclusion2 decks27 decks
6%synergy
Fellwar Stone
7.4%inclusion2 decks27 decks
-2%synergy
Pristine Talisman
7.4%inclusion2 decks27 decks
7%synergy
Moss Diamond
7.4%inclusion2 decks27 decks
6%synergy
Commander's Sphere
7.4%inclusion2 decks27 decks
-1%synergy
Thran Dynamo
7.4%inclusion2 decks27 decks
5%synergy
Blitzball
5.9%inclusion1 decks17 decks
6%synergy
Lands
Island
96%inclusion26 decks27 decks
1%synergy
Forest
96%inclusion26 decks27 decks
1%synergy
Command Tower
81%inclusion22 decks27 decks
-4%synergy
Hinterland Harbor
67%inclusion18 decks27 decks
7%synergy
Flooded Grove
59%inclusion16 decks27 decks
18%synergy
Temple of Mystery
52%inclusion14 decks27 decks
14%synergy
Yavimaya Coast
48%inclusion13 decks27 decks
-4%synergy
Simic Growth Chamber
48%inclusion13 decks27 decks
0%synergy
Vineglimmer Snarl
44%inclusion12 decks27 decks
6%synergy
Dreamroot Cascade
37%inclusion10 decks27 decks
-5%synergy
Rejuvenating Springs
37%inclusion10 decks27 decks
-7%synergy
Thornwood Falls
33%inclusion9 decks27 decks
16%synergy
Evolving Wilds
30%inclusion8 decks27 decks
4%synergy
Breeding Pool
26%inclusion7 decks27 decks
-20%synergy
Overflowing Basin
26%inclusion7 decks27 decks
7%synergy
Terramorphic Expanse
22%inclusion6 decks27 decks
2%synergy
Path of Ancestry
22%inclusion6 decks27 decks
5%synergy
Willowrush Verge
19%inclusion5 decks27 decks
2%synergy
Exotic Orchard
19%inclusion5 decks27 decks
-5%synergy
Tangled Islet
19%inclusion5 decks27 decks
2%synergy
Fabled Passage
15%inclusion4 decks27 decks
0%synergy
Simic Guildgate
15%inclusion4 decks27 decks
5%synergy
Barkchannel Pathway
15%inclusion4 decks27 decks
-5%synergy
Botanical Sanctum
15%inclusion4 decks27 decks
2%synergy
Rimewood Falls
15%inclusion4 decks27 decks
6%synergy
Thriving Grove
11%inclusion3 decks27 decks
9%synergy
Bala Ged Recovery
11%inclusion3 decks27 decks
1%synergy
Littjara Mirrorlake
11%inclusion3 decks27 decks
7%synergy
Glasspool Mimic
11%inclusion3 decks27 decks
7%synergy
Thriving Isle
7.4%inclusion2 decks27 decks
5%synergy
Waterlogged Grove
7.4%inclusion2 decks27 decks
-13%synergy
Quandrix Campus
7.4%inclusion2 decks27 decks
1%synergy
Khalni Ambush
7.4%inclusion2 decks27 decks
6%synergy
Secluded Courtyard
7.4%inclusion2 decks27 decks
0%synergy
Hedge Maze
7.4%inclusion2 decks27 decks
-12%synergy
Blighted Woodland
7.4%inclusion2 decks27 decks
0%synergy
Myriad Landscape
7.4%inclusion2 decks27 decks
-15%synergy
Snow-Covered Forest
7.4%inclusion2 decks27 decks
1%synergy
Brokers Hideout
7.4%inclusion2 decks27 decks
2%synergy
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