Koma, Cosmos Serpent (Commander) - Expensive Midrange

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #298
3decks
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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Ancient Tomb
100%inclusion3 decks3 decks
91%synergy
Crop Rotation
100%inclusion3 decks3 decks
87%synergy
Consecrated Sphinx
100%inclusion3 decks3 decks
91%synergy
The One Ring
100%inclusion3 decks3 decks
92%synergy
Rhystic Study
100%inclusion3 decks3 decks
78%synergy
Mana Vault
100%inclusion3 decks3 decks
94%synergy
Gaea's Cradle
100%inclusion3 decks3 decks
93%synergy
Force of Will
100%inclusion3 decks3 decks
90%synergy
Fierce Guardianship
100%inclusion3 decks3 decks
83%synergy
Cyclonic Rift
100%inclusion3 decks3 decks
74%synergy
Creatures
Spark Double
100%inclusion3 decks3 decks
90%synergy
Sylvan Safekeeper
100%inclusion3 decks3 decks
96%synergy
Birds of Paradise
100%inclusion3 decks3 decks
72%synergy
Enduring Vitality
67%inclusion2 decks3 decks
59%synergy
Roaming Throne
67%inclusion2 decks3 decks
59%synergy
Elvish Mystic
67%inclusion2 decks3 decks
43%synergy
Sowing Mycospawn
67%inclusion2 decks3 decks
65%synergy
Craterhoof Behemoth
67%inclusion2 decks3 decks
57%synergy
Kinnan, Bonder Prodigy
67%inclusion2 decks3 decks
63%synergy
Sakashima of a Thousand Faces
67%inclusion2 decks3 decks
62%synergy
Sakashima the Impostor
67%inclusion2 decks3 decks
64%synergy
Fyndhorn Elves
67%inclusion2 decks3 decks
51%synergy
Spellskite
67%inclusion2 decks3 decks
61%synergy
Delighted Halfling
67%inclusion2 decks3 decks
55%synergy
Displacer Kitten
33%inclusion1 decks3 decks
29%synergy
Peregrine Drake
33%inclusion1 decks3 decks
29%synergy
Bloom Tender
33%inclusion1 decks3 decks
29%synergy
Collector Ouphe
33%inclusion1 decks3 decks
32%synergy
Adrix and Nev, Twincasters
33%inclusion1 decks3 decks
25%synergy
Garruk's Packleader
33%inclusion1 decks3 decks
31%synergy
Circle of Dreams Druid
33%inclusion1 decks3 decks
31%synergy
Koma, World-Eater
33%inclusion1 decks3 decks
20%synergy
Kiora's Follower
33%inclusion1 decks3 decks
18%synergy
Disciple of Freyalise
33%inclusion1 decks3 decks
29%synergy
Eternal Witness
33%inclusion1 decks3 decks
12%synergy
Arbor Elf
33%inclusion1 decks3 decks
27%synergy
Tishana, Voice of Thunder
33%inclusion1 decks3 decks
28%synergy
Hydroelectric Specimen
33%inclusion1 decks3 decks
27%synergy
Junk Winder
33%inclusion1 decks3 decks
27%synergy
Kira, Great Glass-Spinner
33%inclusion1 decks3 decks
33%synergy
Aesi, Tyrant of Gyre Strait
33%inclusion1 decks3 decks
16%synergy
Wandering Archaic
33%inclusion1 decks3 decks
28%synergy
Llanowar Elves
33%inclusion1 decks3 decks
6%synergy
Elvish Spirit Guide
33%inclusion1 decks3 decks
28%synergy
Gilded Drake
33%inclusion1 decks3 decks
31%synergy
Colossal Skyturtle
33%inclusion1 decks3 decks
28%synergy
Pollywog Prodigy
33%inclusion1 decks3 decks
26%synergy
Esix, Fractal Bloom
33%inclusion1 decks3 decks
29%synergy
Ohran Frostfang
33%inclusion1 decks3 decks
30%synergy
Arixmethes, Slumbering Isle
33%inclusion1 decks3 decks
20%synergy
Serpent of Yawning Depths
33%inclusion1 decks3 decks
27%synergy
Hullbreaker Horror
33%inclusion1 decks3 decks
16%synergy
Vorinclex, Voice of Hunger
33%inclusion1 decks3 decks
30%synergy
Sakura-Tribe Elder
33%inclusion1 decks3 decks
14%synergy
Somberwald Sage
33%inclusion1 decks3 decks
32%synergy
Instants
An Offer You Can't Refuse
100%inclusion3 decks3 decks
77%synergy
Archdruid's Charm
100%inclusion3 decks3 decks
94%synergy
Force of Vigor
100%inclusion3 decks3 decks
95%synergy
Heroic Intervention
67%inclusion2 decks3 decks
36%synergy
Mindbreak Trap
67%inclusion2 decks3 decks
62%synergy
Legolas's Quick Reflexes
67%inclusion2 decks3 decks
64%synergy
Chord of Calling
67%inclusion2 decks3 decks
59%synergy
Mana Drain
67%inclusion2 decks3 decks
51%synergy
Beast Within
67%inclusion2 decks3 decks
17%synergy
Flusterstorm
67%inclusion2 decks3 decks
60%synergy
Swan Song
67%inclusion2 decks3 decks
48%synergy
Force of Negation
67%inclusion2 decks3 decks
58%synergy
Sink into Stupor
67%inclusion2 decks3 decks
55%synergy
Counterspell
67%inclusion2 decks3 decks
17%synergy
Worldly Tutor
67%inclusion2 decks3 decks
51%synergy
Mystical Tutor
67%inclusion2 decks3 decks
57%synergy
Veil of Summer
33%inclusion1 decks3 decks
27%synergy
Mental Misstep
33%inclusion1 decks3 decks
28%synergy
Return of the Wildspeaker
33%inclusion1 decks3 decks
23%synergy
Krosan Grip
33%inclusion1 decks3 decks
25%synergy
Nature's Claim
33%inclusion1 decks3 decks
23%synergy
Dispel
33%inclusion1 decks3 decks
29%synergy
Reality Shift
33%inclusion1 decks3 decks
19%synergy
Resculpt
33%inclusion1 decks3 decks
27%synergy
Delay
33%inclusion1 decks3 decks
31%synergy
Arcane Denial
33%inclusion1 decks3 decks
11%synergy
Snap
33%inclusion1 decks3 decks
29%synergy
Misdirection
33%inclusion1 decks3 decks
31%synergy
Borne Upon a Wind
33%inclusion1 decks3 decks
32%synergy
Miscast
33%inclusion1 decks3 decks
31%synergy
Pact of Negation
33%inclusion1 decks3 decks
26%synergy
Sorceries
Finale of Devastation
100%inclusion3 decks3 decks
88%synergy
Green Sun's Zenith
67%inclusion2 decks3 decks
58%synergy
Sea Gate Restoration
67%inclusion2 decks3 decks
61%synergy
Irenicus's Vile Duplication
67%inclusion2 decks3 decks
60%synergy
Nature's Rhythm
33%inclusion1 decks3 decks
27%synergy
Eldritch Evolution
33%inclusion1 decks3 decks
30%synergy
Kodama's Reach
33%inclusion1 decks3 decks
-3%synergy
Flare of Cultivation
33%inclusion1 decks3 decks
31%synergy
Quantum Misalignment
33%inclusion1 decks3 decks
30%synergy
Three Visits
33%inclusion1 decks3 decks
10%synergy
Triumph of the Hordes
33%inclusion1 decks3 decks
30%synergy
Turntimber Symbiosis
33%inclusion1 decks3 decks
31%synergy
Neoform
33%inclusion1 decks3 decks
29%synergy
Farseek
33%inclusion1 decks3 decks
9%synergy
Tempt with Discovery
33%inclusion1 decks3 decks
29%synergy
Temporal Manipulation
33%inclusion1 decks3 decks
32%synergy
Nature's Lore
33%inclusion1 decks3 decks
3%synergy
Rampant Growth
33%inclusion1 decks3 decks
-7%synergy
Cultivate
33%inclusion1 decks3 decks
-14%synergy
Doppelgang
33%inclusion1 decks3 decks
27%synergy
Whelming Wave
33%inclusion1 decks3 decks
22%synergy
Utility Artifacts
Static Orb
33%inclusion1 decks3 decks
33%synergy
Sensei's Divining Top
33%inclusion1 decks3 decks
30%synergy
Winter Orb
33%inclusion1 decks3 decks
33%synergy
Null Rod
33%inclusion1 decks3 decks
33%synergy
Skullclamp
33%inclusion1 decks3 decks
32%synergy
The Great Henge
33%inclusion1 decks3 decks
24%synergy
Phyrexian Altar
33%inclusion1 decks3 decks
33%synergy
Whispersilk Cloak
33%inclusion1 decks3 decks
31%synergy
Lightning Greaves
33%inclusion1 decks3 decks
12%synergy
Smokestack
33%inclusion1 decks3 decks
33%synergy
Enchantments
Mystic Remora
100%inclusion3 decks3 decks
85%synergy
Doubling Season
67%inclusion2 decks3 decks
57%synergy
Carpet of Flowers
67%inclusion2 decks3 decks
64%synergy
Tribute to the World Tree
67%inclusion2 decks3 decks
60%synergy
Parallel Lives
67%inclusion2 decks3 decks
61%synergy
Sylvan Library
67%inclusion2 decks3 decks
57%synergy
Kindred Discovery
33%inclusion1 decks3 decks
23%synergy
Utopia Sprawl
33%inclusion1 decks3 decks
27%synergy
Verity Circle
33%inclusion1 decks3 decks
33%synergy
Wild Growth
33%inclusion1 decks3 decks
25%synergy
Quest for Renewal
33%inclusion1 decks3 decks
32%synergy
Elemental Bond
33%inclusion1 decks3 decks
28%synergy
Defense of the Heart
33%inclusion1 decks3 decks
31%synergy
Growing Rites of Itlimoc
33%inclusion1 decks3 decks
27%synergy
Planeswalkers
Oko, Thief of Crowns
33%inclusion1 decks3 decks
26%synergy
Utility Lands
Boseiju, Who Endures
100%inclusion3 decks3 decks
78%synergy
Otawara, Soaring City
100%inclusion3 decks3 decks
81%synergy
Minamo, School at Water's Edge
67%inclusion2 decks3 decks
60%synergy
Mistrise Village
67%inclusion2 decks3 decks
56%synergy
Nykthos, Shrine to Nyx
67%inclusion2 decks3 decks
64%synergy
Yavimaya, Cradle of Growth
67%inclusion2 decks3 decks
45%synergy
Three Tree City
67%inclusion2 decks3 decks
62%synergy
Evendo, Waking Haven
50%inclusion1 decks2 decks
45%synergy
Boseiju, Who Shelters All
33%inclusion1 decks3 decks
33%synergy
Urza's Saga
33%inclusion1 decks3 decks
28%synergy
Emergence Zone
33%inclusion1 decks3 decks
29%synergy
Shifting Woodland
33%inclusion1 decks3 decks
27%synergy
Command Beacon
33%inclusion1 decks3 decks
29%synergy
Dryad Arbor
33%inclusion1 decks3 decks
28%synergy
Mana Artifacts
Sol Ring
100%inclusion3 decks3 decks
19%synergy
Arcane Signet
67%inclusion2 decks3 decks
4%synergy
Lotus Petal
67%inclusion2 decks3 decks
60%synergy
Talisman of Curiosity
33%inclusion1 decks3 decks
12%synergy
Fellwar Stone
33%inclusion1 decks3 decks
24%synergy
Chrome Mox
33%inclusion1 decks3 decks
27%synergy
Lands
Command Tower
100%inclusion3 decks3 decks
15%synergy
Misty Rainforest
100%inclusion3 decks3 decks
69%synergy
Breeding Pool
100%inclusion3 decks3 decks
54%synergy
Tropical Island
100%inclusion3 decks3 decks
86%synergy
Hedge Maze
100%inclusion3 decks3 decks
80%synergy
Rejuvenating Springs
100%inclusion3 decks3 decks
56%synergy
Prismatic Vista
67%inclusion2 decks3 decks
59%synergy
Yavimaya Coast
67%inclusion2 decks3 decks
14%synergy
Sea Gate Restoration
67%inclusion2 decks3 decks
61%synergy
Barkchannel Pathway
67%inclusion2 decks3 decks
46%synergy
Snow-Covered Island
67%inclusion2 decks3 decks
60%synergy
Snow-Covered Forest
67%inclusion2 decks3 decks
60%synergy
Verdant Catacombs
67%inclusion2 decks3 decks
57%synergy
Waterlogged Grove
67%inclusion2 decks3 decks
46%synergy
Island
67%inclusion2 decks3 decks
-29%synergy
Forest
67%inclusion2 decks3 decks
-29%synergy
Sink into Stupor
67%inclusion2 decks3 decks
55%synergy
Mana Confluence
67%inclusion2 decks3 decks
61%synergy
Disciple of Freyalise
33%inclusion1 decks3 decks
29%synergy
Exotic Orchard
33%inclusion1 decks3 decks
9%synergy
Windswept Heath
33%inclusion1 decks3 decks
23%synergy
Turntimber Symbiosis
33%inclusion1 decks3 decks
31%synergy
Hydroelectric Specimen
33%inclusion1 decks3 decks
27%synergy
Wooded Foothills
33%inclusion1 decks3 decks
24%synergy
Plaza of Heroes
33%inclusion1 decks3 decks
32%synergy
Gemstone Caverns
33%inclusion1 decks3 decks
27%synergy
Willowrush Verge
33%inclusion1 decks3 decks
17%synergy
Scalding Tarn
33%inclusion1 decks3 decks
23%synergy
Flooded Grove
33%inclusion1 decks3 decks
-8%synergy
Dreamroot Cascade
33%inclusion1 decks3 decks
-9%synergy
Polluted Delta
33%inclusion1 decks3 decks
23%synergy
City of Brass
33%inclusion1 decks3 decks
27%synergy
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