Koma, Cosmos Serpent (Commander) - Budget Optimized

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #306
28decks
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
14%inclusion1 decks7 decks
9%synergy
Aang's Journey
6.3%inclusion1 decks16 decks
6%synergy
High Synergy Cards
Adrix and Nev, Twincasters
64%inclusion18 decks28 decks
56%synergy
Koma, World-Eater
64%inclusion18 decks28 decks
51%synergy
Junk Winder
57%inclusion16 decks28 decks
51%synergy
Spark Double
57%inclusion16 decks28 decks
48%synergy
Serpent of Yawning Depths
50%inclusion14 decks28 decks
44%synergy
Whelming Wave
54%inclusion15 decks28 decks
42%synergy
Double Major
50%inclusion14 decks28 decks
42%synergy
Arixmethes, Slumbering Isle
54%inclusion15 decks28 decks
40%synergy
Aesi, Tyrant of Gyre Strait
57%inclusion16 decks28 decks
40%synergy
Elemental Bond
43%inclusion12 decks28 decks
37%synergy
Top Cards
Cultivate
71%inclusion20 decks28 decks
25%synergy
Counterspell
68%inclusion19 decks28 decks
18%synergy
Kodama's Reach
64%inclusion18 decks28 decks
28%synergy
Rampant Growth
64%inclusion18 decks28 decks
24%synergy
Tatyova, Benthic Druid
57%inclusion16 decks28 decks
26%synergy
Growth Spiral
57%inclusion16 decks28 decks
13%synergy
Beast Within
57%inclusion16 decks28 decks
7%synergy
Llanowar Elves
54%inclusion15 decks28 decks
26%synergy
Swiftfoot Boots
50%inclusion14 decks28 decks
24%synergy
Doubling Season
46%inclusion13 decks28 decks
37%synergy
Game Changers
Seedborn Muse
32%inclusion9 decks28 decks
16%synergy
Cyclonic Rift
29%inclusion8 decks28 decks
3%synergy
Mystical Tutor
18%inclusion5 decks28 decks
9%synergy
Rhystic Study
14%inclusion4 decks28 decks
-7%synergy
Worldly Tutor
14%inclusion4 decks28 decks
-1%synergy
Consecrated Sphinx
11%inclusion3 decks28 decks
2%synergy
Narset, Parter of Veils
11%inclusion3 decks28 decks
9%synergy
Fierce Guardianship
7.1%inclusion2 decks28 decks
-10%synergy
Creatures
Murkfiend Liege
46%inclusion13 decks28 decks
32%synergy
Sakura-Tribe Elder
46%inclusion13 decks28 decks
27%synergy
Elvish Mystic
43%inclusion12 decks28 decks
19%synergy
Ohran Frostfang
39%inclusion11 decks28 decks
36%synergy
Hullbreaker Horror
39%inclusion11 decks28 decks
21%synergy
Garruk's Packleader
32%inclusion9 decks28 decks
30%synergy
Sakashima of a Thousand Faces
29%inclusion8 decks28 decks
24%synergy
Archetype of Imagination
29%inclusion8 decks28 decks
24%synergy
Sakashima the Impostor
29%inclusion8 decks28 decks
26%synergy
Slinn Voda, the Rising Deep
29%inclusion8 decks28 decks
22%synergy
Spawning Kraken
29%inclusion8 decks28 decks
21%synergy
Solemn Simulacrum
25%inclusion7 decks28 decks
18%synergy
Coiling Oracle
25%inclusion7 decks28 decks
12%synergy
Esix, Fractal Bloom
25%inclusion7 decks28 decks
21%synergy
Octomancer
21%inclusion6 decks28 decks
17%synergy
Xolatoyac, the Smiling Flood
21%inclusion6 decks28 decks
14%synergy
Scourge of Fleets
21%inclusion6 decks28 decks
13%synergy
Fanatic of Rhonas
21%inclusion6 decks28 decks
16%synergy
Nezahal, Primal Tide
21%inclusion6 decks28 decks
11%synergy
Craterhoof Behemoth
21%inclusion6 decks28 decks
12%synergy
Fyndhorn Elves
21%inclusion6 decks28 decks
6%synergy
Reclamation Sage
18%inclusion5 decks28 decks
4%synergy
Stormtide Leviathan
18%inclusion5 decks28 decks
12%synergy
Curiosity Crafter
18%inclusion5 decks28 decks
14%synergy
Enduring Vitality
18%inclusion5 decks28 decks
10%synergy
Progenitor Mimic
18%inclusion5 decks28 decks
13%synergy
Eternal Witness
18%inclusion5 decks28 decks
-3%synergy
Birds of Paradise
18%inclusion5 decks28 decks
-10%synergy
Kiora, Sovereign of the Deep
18%inclusion5 decks28 decks
16%synergy
Clever Impersonator
18%inclusion5 decks28 decks
13%synergy
Jaheira, Friend of the Forest
14%inclusion4 decks28 decks
10%synergy
Rampaging Baloths
14%inclusion4 decks28 decks
-3%synergy
Inga and Esika
14%inclusion4 decks28 decks
12%synergy
Kinnan, Bonder Prodigy
14%inclusion4 decks28 decks
11%synergy
Auton Soldier
14%inclusion4 decks28 decks
12%synergy
Saryth, the Viper's Fang
14%inclusion4 decks28 decks
13%synergy
Loot, Exuberant Explorer
14%inclusion4 decks28 decks
7%synergy
Troyan, Gutsy Explorer
11%inclusion3 decks28 decks
8%synergy
Gyre Engineer
11%inclusion3 decks28 decks
8%synergy
Verdant Sun's Avatar
11%inclusion3 decks28 decks
9%synergy
Roaming Throne
11%inclusion3 decks28 decks
3%synergy
Tireless Provisioner
11%inclusion3 decks28 decks
-4%synergy
Benthic Anomaly
11%inclusion3 decks28 decks
8%synergy
Kodama of the East Tree
11%inclusion3 decks28 decks
5%synergy
Kiora, the Rising Tide
11%inclusion3 decks28 decks
8%synergy
Azusa, Lost but Seeking
11%inclusion3 decks28 decks
-3%synergy
Moritte of the Frost
11%inclusion3 decks28 decks
9%synergy
Glasspool Mimic
11%inclusion3 decks28 decks
6%synergy
Summon: Leviathan
8.7%inclusion2 decks23 decks
1%synergy
Maraleaf Pixie
7.1%inclusion2 decks28 decks
1%synergy
Instants
Pongify
39%inclusion11 decks28 decks
14%synergy
Negate
39%inclusion11 decks28 decks
13%synergy
Reality Shift
39%inclusion11 decks28 decks
25%synergy
Second Harvest
32%inclusion9 decks28 decks
26%synergy
Heroic Intervention
32%inclusion9 decks28 decks
2%synergy
Arcane Denial
32%inclusion9 decks28 decks
10%synergy
Return of the Wildspeaker
29%inclusion8 decks28 decks
18%synergy
Rapid Hybridization
25%inclusion7 decks28 decks
-1%synergy
Snakeskin Veil
21%inclusion6 decks28 decks
16%synergy
An Offer You Can't Refuse
21%inclusion6 decks28 decks
-2%synergy
Decisive Denial
18%inclusion5 decks28 decks
13%synergy
Brainstorm
18%inclusion5 decks28 decks
3%synergy
Eureka Moment
14%inclusion4 decks28 decks
3%synergy
Krosan Grip
14%inclusion4 decks28 decks
7%synergy
Harrow
14%inclusion4 decks28 decks
2%synergy
Swan Song
14%inclusion4 decks28 decks
-5%synergy
Plasm Capture
14%inclusion4 decks28 decks
11%synergy
Planar Genesis
14%inclusion4 decks28 decks
3%synergy
Mystic Reflection
14%inclusion4 decks28 decks
12%synergy
Return to Nature
14%inclusion4 decks28 decks
9%synergy
Strix Serenade
14%inclusion4 decks28 decks
11%synergy
Noxious Revival
14%inclusion4 decks28 decks
8%synergy
Refute
11%inclusion3 decks28 decks
9%synergy
Opt
11%inclusion3 decks28 decks
3%synergy
Resculpt
11%inclusion3 decks28 decks
5%synergy
Archdruid's Charm
11%inclusion3 decks28 decks
4%synergy
Voidslime
11%inclusion3 decks28 decks
6%synergy
Shore Up
11%inclusion3 decks28 decks
8%synergy
Annul
11%inclusion3 decks28 decks
10%synergy
Snap
11%inclusion3 decks28 decks
6%synergy
Tamiyo's Safekeeping
11%inclusion3 decks28 decks
5%synergy
Disdainful Stroke
7.1%inclusion2 decks28 decks
6%synergy
Incubation // Incongruity
7.1%inclusion2 decks28 decks
5%synergy
Tyvar's Stand
7.1%inclusion2 decks28 decks
4%synergy
Blinding Fog
7.1%inclusion2 decks28 decks
7%synergy
Force of Vigor
7.1%inclusion2 decks28 decks
2%synergy
Evolution Charm
7.1%inclusion2 decks28 decks
7%synergy
Chord of Calling
7.1%inclusion2 decks28 decks
-1%synergy
Aetherize
7.1%inclusion2 decks28 decks
-5%synergy
Bane's Contingency
7.1%inclusion2 decks28 decks
6%synergy
Quandrix Command
7.1%inclusion2 decks28 decks
2%synergy
Cackling Counterpart
7.1%inclusion2 decks28 decks
4%synergy
Joint Exploration
7.1%inclusion2 decks28 decks
1%synergy
Wash Away
7.1%inclusion2 decks28 decks
6%synergy
Khalni Ambush
7.1%inclusion2 decks28 decks
5%synergy
Force of Negation
7.1%inclusion2 decks28 decks
-1%synergy
Hunter's Insight
7.1%inclusion2 decks28 decks
6%synergy
Time Stop
7.1%inclusion2 decks28 decks
7%synergy
Keep Safe
7.1%inclusion2 decks28 decks
7%synergy
Mana Drain
7.1%inclusion2 decks28 decks
-9%synergy
Sorceries
Nature's Lore
43%inclusion12 decks28 decks
12%synergy
Irenicus's Vile Duplication
39%inclusion11 decks28 decks
33%synergy
Farseek
39%inclusion11 decks28 decks
14%synergy
Skyshroud Claim
32%inclusion9 decks28 decks
23%synergy
Rite of Replication
29%inclusion8 decks28 decks
21%synergy
Explore
25%inclusion7 decks28 decks
5%synergy
Quantum Misalignment
18%inclusion5 decks28 decks
15%synergy
Three Visits
18%inclusion5 decks28 decks
-5%synergy
Rishkar's Expertise
18%inclusion5 decks28 decks
9%synergy
Doppelgang
18%inclusion5 decks28 decks
11%synergy
Shamanic Revelation
18%inclusion5 decks28 decks
13%synergy
Bala Ged Recovery
14%inclusion4 decks28 decks
4%synergy
Migration Path
14%inclusion4 decks28 decks
11%synergy
Finale of Devastation
14%inclusion4 decks28 decks
2%synergy
Titania's Command
11%inclusion3 decks28 decks
10%synergy
Harmonize
11%inclusion3 decks28 decks
5%synergy
Overwhelming Stampede
11%inclusion3 decks28 decks
-2%synergy
Regrowth
11%inclusion3 decks28 decks
7%synergy
Aggressive Biomancy
11%inclusion3 decks28 decks
6%synergy
Search for Tomorrow
11%inclusion3 decks28 decks
6%synergy
Explosive Vegetation
11%inclusion3 decks28 decks
5%synergy
Urban Evolution
11%inclusion3 decks28 decks
1%synergy
Ravenform
11%inclusion3 decks28 decks
6%synergy
Ponder
7.1%inclusion2 decks28 decks
0%synergy
Polymorph
7.1%inclusion2 decks28 decks
7%synergy
Flare of Cultivation
7.1%inclusion2 decks28 decks
5%synergy
Windfall
7.1%inclusion2 decks28 decks
3%synergy
Circuitous Route
7.1%inclusion2 decks28 decks
5%synergy
Map the Frontier
7.1%inclusion2 decks28 decks
6%synergy
Fabricate
7.1%inclusion2 decks28 decks
0%synergy
Gitaxian Probe
7.1%inclusion2 decks28 decks
5%synergy
Atraxa's Fall
7.1%inclusion2 decks28 decks
7%synergy
Bribery
7.1%inclusion2 decks28 decks
7%synergy
Personal Tutor
7.1%inclusion2 decks28 decks
6%synergy
Preordain
7.1%inclusion2 decks28 decks
-1%synergy
Distant Melody
7.1%inclusion2 decks28 decks
4%synergy
Nissa's Pilgrimage
7.1%inclusion2 decks28 decks
6%synergy
River's Rebuke
7.1%inclusion2 decks28 decks
5%synergy
Bushwhack
7.1%inclusion2 decks28 decks
5%synergy
Utility Artifacts
Combine Chrysalis
29%inclusion8 decks28 decks
24%synergy
Emerald Medallion
29%inclusion8 decks28 decks
26%synergy
Mirror Box
21%inclusion6 decks28 decks
18%synergy
Helm of the Host
21%inclusion6 decks28 decks
16%synergy
Lightning Greaves
21%inclusion6 decks28 decks
0%synergy
Sapphire Medallion
21%inclusion6 decks28 decks
18%synergy
Eldrazi Monument
14%inclusion4 decks28 decks
14%synergy
Giant's Amulet
11%inclusion3 decks28 decks
11%synergy
Banner of Kinship
11%inclusion3 decks28 decks
9%synergy
Whispersilk Cloak
11%inclusion3 decks28 decks
8%synergy
Winter Moon
11%inclusion3 decks28 decks
11%synergy
Torpor Orb
11%inclusion3 decks28 decks
11%synergy
Glaring Spotlight
7.1%inclusion2 decks28 decks
7%synergy
Wayfarer's Bauble
7.1%inclusion2 decks28 decks
5%synergy
Coat of Arms
7.1%inclusion2 decks28 decks
6%synergy
Idol of Oblivion
7.1%inclusion2 decks28 decks
4%synergy
Weathered Runestone
7.1%inclusion2 decks28 decks
7%synergy
Vexing Bauble
7.1%inclusion2 decks28 decks
7%synergy
Bident of Thassa
7.1%inclusion2 decks28 decks
0%synergy
Larval Scoutlander
5.6%inclusion1 decks18 decks
5%synergy
Enchantments
Parallel Lives
43%inclusion12 decks28 decks
37%synergy
Tribute to the World Tree
29%inclusion8 decks28 decks
22%synergy
Kindred Discovery
25%inclusion7 decks28 decks
15%synergy
Garruk's Uprising
25%inclusion7 decks28 decks
8%synergy
Primal Vigor
21%inclusion6 decks28 decks
18%synergy
Beastmaster Ascension
18%inclusion5 decks28 decks
15%synergy
Defense of the Heart
18%inclusion5 decks28 decks
16%synergy
Growing Rites of Itlimoc
18%inclusion5 decks28 decks
12%synergy
Paradox Haze
14%inclusion4 decks28 decks
14%synergy
Propaganda
14%inclusion4 decks28 decks
8%synergy
Mystic Remora
14%inclusion4 decks28 decks
-1%synergy
Freed from the Real
11%inclusion3 decks28 decks
6%synergy
Cryptolith Rite
11%inclusion3 decks28 decks
8%synergy
Imprisoned in the Moon
11%inclusion3 decks28 decks
7%synergy
Unnatural Growth
11%inclusion3 decks28 decks
7%synergy
Asceticism
11%inclusion3 decks28 decks
7%synergy
Nature's Will
11%inclusion3 decks28 decks
10%synergy
Kenrith's Transformation
11%inclusion3 decks28 decks
6%synergy
In Search of Greatness
11%inclusion3 decks28 decks
9%synergy
Extravagant Replication
11%inclusion3 decks28 decks
8%synergy
Wilderness Reclamation
11%inclusion3 decks28 decks
2%synergy
Utopia Sprawl
7.1%inclusion2 decks28 decks
1%synergy
Back to Basics
7.1%inclusion2 decks28 decks
7%synergy
Hall of Gemstone
7.1%inclusion2 decks28 decks
7%synergy
Utter Insignificance
7.1%inclusion2 decks28 decks
6%synergy
Vesuvan Duplimancy
7.1%inclusion2 decks28 decks
5%synergy
Rites of Flourishing
7.1%inclusion2 decks28 decks
5%synergy
Mirrormade
7.1%inclusion2 decks28 decks
5%synergy
Stasis
7.1%inclusion2 decks28 decks
7%synergy
Unable to Scream
7.1%inclusion2 decks28 decks
6%synergy
Eaten by Piranhas
7.1%inclusion2 decks28 decks
5%synergy
Wild Growth
7.1%inclusion2 decks28 decks
-2%synergy
Bounty of the Luxa
7.1%inclusion2 decks28 decks
6%synergy
Omniscience
7.1%inclusion2 decks28 decks
2%synergy
Stasis Field
7.1%inclusion2 decks28 decks
7%synergy
Kiora Bests the Sea God
7.1%inclusion2 decks28 decks
5%synergy
Copy Enchantment
7.1%inclusion2 decks28 decks
6%synergy
Mana Reflection
7.1%inclusion2 decks28 decks
2%synergy
Witness Protection
7.1%inclusion2 decks28 decks
4%synergy
Retreat to Coralhelm
7.1%inclusion2 decks28 decks
-3%synergy
Colossal Majesty
7.1%inclusion2 decks28 decks
5%synergy
Confounding Conundrum
7.1%inclusion2 decks28 decks
7%synergy
Moonlit Meditation
5.6%inclusion1 decks18 decks
4%synergy
Battles
Invasion of Segovia
7.1%inclusion2 decks28 decks
6%synergy
Planeswalkers
Oko, Thief of Crowns
21%inclusion6 decks28 decks
14%synergy
Nissa, Who Shakes the World
18%inclusion5 decks28 decks
14%synergy
Tamiyo, Compleated Sage
14%inclusion4 decks28 decks
13%synergy
Kiora, Master of the Depths
7.1%inclusion2 decks28 decks
5%synergy
Kiora, the Crashing Wave
7.1%inclusion2 decks28 decks
4%synergy
Utility Lands
Reliquary Tower
39%inclusion11 decks28 decks
-10%synergy
Mosswort Bridge
39%inclusion11 decks28 decks
22%synergy
Rogue's Passage
32%inclusion9 decks28 decks
10%synergy
Temple of the False God
21%inclusion6 decks28 decks
6%synergy
Alchemist's Refuge
14%inclusion4 decks28 decks
-3%synergy
Castle Vantress
11%inclusion3 decks28 decks
4%synergy
Castle Garenbrig
11%inclusion3 decks28 decks
6%synergy
Mystic Sanctuary
7.1%inclusion2 decks28 decks
-5%synergy
Tranquil Thicket
7.1%inclusion2 decks28 decks
3%synergy
Mana Artifacts
Sol Ring
82%inclusion23 decks28 decks
2%synergy
Arcane Signet
71%inclusion20 decks28 decks
8%synergy
Simic Signet
43%inclusion12 decks28 decks
11%synergy
Thought Vessel
32%inclusion9 decks28 decks
12%synergy
Talisman of Curiosity
29%inclusion8 decks28 decks
7%synergy
Commander's Sphere
14%inclusion4 decks28 decks
6%synergy
Fellwar Stone
11%inclusion3 decks28 decks
1%synergy
Moss Diamond
7.1%inclusion2 decks28 decks
6%synergy
Sky Diamond
7.1%inclusion2 decks28 decks
6%synergy
Pristine Talisman
7.1%inclusion2 decks28 decks
7%synergy
Lands
Island
100%inclusion28 decks28 decks
5%synergy
Forest
100%inclusion28 decks28 decks
5%synergy
Command Tower
79%inclusion22 decks28 decks
-7%synergy
Hinterland Harbor
71%inclusion20 decks28 decks
12%synergy
Flooded Grove
64%inclusion18 decks28 decks
23%synergy
Simic Growth Chamber
54%inclusion15 decks28 decks
5%synergy
Temple of Mystery
50%inclusion14 decks28 decks
12%synergy
Yavimaya Coast
50%inclusion14 decks28 decks
-3%synergy
Rejuvenating Springs
46%inclusion13 decks28 decks
3%synergy
Vineglimmer Snarl
43%inclusion12 decks28 decks
4%synergy
Dreamroot Cascade
36%inclusion10 decks28 decks
-7%synergy
Thornwood Falls
32%inclusion9 decks28 decks
15%synergy
Evolving Wilds
29%inclusion8 decks28 decks
3%synergy
Terramorphic Expanse
25%inclusion7 decks28 decks
5%synergy
Breeding Pool
25%inclusion7 decks28 decks
-21%synergy
Fabled Passage
21%inclusion6 decks28 decks
7%synergy
Overflowing Basin
21%inclusion6 decks28 decks
2%synergy
Exotic Orchard
18%inclusion5 decks28 decks
-6%synergy
Botanical Sanctum
18%inclusion5 decks28 decks
5%synergy
Path of Ancestry
18%inclusion5 decks28 decks
1%synergy
Barkchannel Pathway
18%inclusion5 decks28 decks
-2%synergy
Myriad Landscape
14%inclusion4 decks28 decks
-7%synergy
Thriving Grove
14%inclusion4 decks28 decks
13%synergy
Tangled Islet
14%inclusion4 decks28 decks
-2%synergy
Bala Ged Recovery
14%inclusion4 decks28 decks
4%synergy
Rimewood Falls
11%inclusion3 decks28 decks
2%synergy
Willowrush Verge
11%inclusion3 decks28 decks
-6%synergy
Hedge Maze
11%inclusion3 decks28 decks
-9%synergy
Thriving Isle
11%inclusion3 decks28 decks
9%synergy
Simic Guildgate
11%inclusion3 decks28 decks
1%synergy
Glasspool Mimic
11%inclusion3 decks28 decks
6%synergy
Misty Rainforest
7.1%inclusion2 decks28 decks
-24%synergy
Quandrix Campus
7.1%inclusion2 decks28 decks
0%synergy
Secluded Courtyard
7.1%inclusion2 decks28 decks
0%synergy
Khalni Ambush
7.1%inclusion2 decks28 decks
5%synergy
Littjara Mirrorlake
7.1%inclusion2 decks28 decks
3%synergy
Waterlogged Grove
7.1%inclusion2 decks28 decks
-14%synergy
Brokers Hideout
7.1%inclusion2 decks28 decks
2%synergy
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