Koma, Cosmos Serpent (Commander) - Expensive Upgraded Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #296
2decks
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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Fierce Guardianship
100%inclusion2 decks2 decks
83%synergy
Cyclonic Rift
100%inclusion2 decks2 decks
74%synergy
Seedborn Muse
50%inclusion1 decks2 decks
34%synergy
Rhystic Study
50%inclusion1 decks2 decks
28%synergy
Gaea's Cradle
50%inclusion1 decks2 decks
43%synergy
Force of Will
50%inclusion1 decks2 decks
40%synergy
Creatures
Adrix and Nev, Twincasters
100%inclusion2 decks2 decks
92%synergy
Garruk's Packleader
100%inclusion2 decks2 decks
98%synergy
Koma, World-Eater
100%inclusion2 decks2 decks
87%synergy
Elvish Mystic
100%inclusion2 decks2 decks
76%synergy
Llanowar Elves
100%inclusion2 decks2 decks
72%synergy
Spark Double
100%inclusion2 decks2 decks
90%synergy
Sakashima of a Thousand Faces
100%inclusion2 decks2 decks
95%synergy
Serpent of Yawning Depths
100%inclusion2 decks2 decks
94%synergy
Spawning Kraken
100%inclusion2 decks2 decks
93%synergy
Summon: Leviathan
100%inclusion1 decks1 decks
93%synergy
Eternal Witness
50%inclusion1 decks2 decks
29%synergy
Enduring Vitality
50%inclusion1 decks2 decks
43%synergy
Roaming Throne
50%inclusion1 decks2 decks
42%synergy
Junk Winder
50%inclusion1 decks2 decks
43%synergy
Murkfiend Liege
50%inclusion1 decks2 decks
35%synergy
Aesi, Tyrant of Gyre Strait
50%inclusion1 decks2 decks
33%synergy
Slinn Voda, the Rising Deep
50%inclusion1 decks2 decks
43%synergy
Fanatic of Rhonas
50%inclusion1 decks2 decks
44%synergy
Wood Elves
50%inclusion1 decks2 decks
43%synergy
Craterhoof Behemoth
50%inclusion1 decks2 decks
41%synergy
Enduring Curiosity
50%inclusion1 decks2 decks
47%synergy
Archetype of Imagination
50%inclusion1 decks2 decks
46%synergy
Sakashima the Impostor
50%inclusion1 decks2 decks
47%synergy
Oviya, Automech Artisan
50%inclusion1 decks2 decks
48%synergy
Ohran Frostfang
50%inclusion1 decks2 decks
46%synergy
Nezahal, Primal Tide
50%inclusion1 decks2 decks
39%synergy
Arixmethes, Slumbering Isle
50%inclusion1 decks2 decks
37%synergy
Birds of Paradise
50%inclusion1 decks2 decks
22%synergy
Hullbreaker Horror
50%inclusion1 decks2 decks
32%synergy
Fyndhorn Elves
50%inclusion1 decks2 decks
34%synergy
Sakura-Tribe Elder
50%inclusion1 decks2 decks
31%synergy
Instants
Negate
100%inclusion2 decks2 decks
74%synergy
Plasm Capture
100%inclusion2 decks2 decks
96%synergy
Krosan Grip
100%inclusion2 decks2 decks
92%synergy
Beast Within
100%inclusion2 decks2 decks
50%synergy
Arcane Denial
100%inclusion2 decks2 decks
77%synergy
Counterspell
100%inclusion2 decks2 decks
50%synergy
Pongify
50%inclusion1 decks2 decks
25%synergy
Rapid Hybridization
50%inclusion1 decks2 decks
24%synergy
An Offer You Can't Refuse
50%inclusion1 decks2 decks
27%synergy
Heroic Intervention
50%inclusion1 decks2 decks
20%synergy
Three Steps Ahead
50%inclusion1 decks2 decks
47%synergy
Return of the Wildspeaker
50%inclusion1 decks2 decks
40%synergy
Growth Spiral
50%inclusion1 decks2 decks
6%synergy
Stubborn Denial
50%inclusion1 decks2 decks
47%synergy
Second Harvest
50%inclusion1 decks2 decks
44%synergy
Nexus of Fate
50%inclusion1 decks2 decks
48%synergy
Harrow
50%inclusion1 decks2 decks
38%synergy
Reality Shift
50%inclusion1 decks2 decks
35%synergy
Entish Restoration
50%inclusion1 decks2 decks
41%synergy
Mana Drain
50%inclusion1 decks2 decks
34%synergy
Cancel
50%inclusion1 decks2 decks
48%synergy
Resculpt
50%inclusion1 decks2 decks
44%synergy
Swan Song
50%inclusion1 decks2 decks
31%synergy
Rewind
50%inclusion1 decks2 decks
47%synergy
Tamiyo's Safekeeping
50%inclusion1 decks2 decks
44%synergy
Sink into Stupor
50%inclusion1 decks2 decks
39%synergy
Voidslime
50%inclusion1 decks2 decks
45%synergy
Unwind
50%inclusion1 decks2 decks
48%synergy
Double Major
50%inclusion1 decks2 decks
42%synergy
Sorceries
Three Visits
100%inclusion2 decks2 decks
77%synergy
Skyshroud Claim
100%inclusion2 decks2 decks
91%synergy
Farseek
100%inclusion2 decks2 decks
75%synergy
Nature's Lore
100%inclusion2 decks2 decks
70%synergy
Irenicus's Vile Duplication
100%inclusion2 decks2 decks
94%synergy
Overwhelming Stampede
100%inclusion2 decks2 decks
88%synergy
Whelming Wave
100%inclusion2 decks2 decks
89%synergy
Ponder
50%inclusion1 decks2 decks
43%synergy
Inundate
50%inclusion1 decks2 decks
50%synergy
Kodama's Reach
50%inclusion1 decks2 decks
14%synergy
Quantum Misalignment
50%inclusion1 decks2 decks
47%synergy
Sea Gate Restoration
50%inclusion1 decks2 decks
45%synergy
Rampant Growth
50%inclusion1 decks2 decks
9%synergy
Cultivate
50%inclusion1 decks2 decks
3%synergy
Expropriate
50%inclusion1 decks2 decks
48%synergy
Preordain
50%inclusion1 decks2 decks
42%synergy
Shamanic Revelation
50%inclusion1 decks2 decks
45%synergy
Ravenform
50%inclusion1 decks2 decks
45%synergy
Utility Artifacts
Lightning Greaves
100%inclusion2 decks2 decks
78%synergy
Mirror Box
50%inclusion1 decks2 decks
47%synergy
Coat of Arms
50%inclusion1 decks2 decks
49%synergy
Combine Chrysalis
50%inclusion1 decks2 decks
46%synergy
Swiftfoot Boots
50%inclusion1 decks2 decks
24%synergy
Enchantments
Parallel Lives
100%inclusion2 decks2 decks
94%synergy
Elemental Bond
100%inclusion2 decks2 decks
94%synergy
Paradox Haze
100%inclusion2 decks2 decks
100%synergy
Kindred Discovery
50%inclusion1 decks2 decks
40%synergy
Utopia Sprawl
50%inclusion1 decks2 decks
43%synergy
Doubling Season
50%inclusion1 decks2 decks
40%synergy
Extravagant Replication
50%inclusion1 decks2 decks
48%synergy
Wild Growth
50%inclusion1 decks2 decks
41%synergy
Tribute to the World Tree
50%inclusion1 decks2 decks
44%synergy
Mystic Remora
50%inclusion1 decks2 decks
35%synergy
Growing Rites of Itlimoc
50%inclusion1 decks2 decks
44%synergy
Planeswalkers
Oko, Thief of Crowns
50%inclusion1 decks2 decks
43%synergy
Utility Lands
Evendo, Waking Haven
100%inclusion1 decks1 decks
95%synergy
Mistrise Village
50%inclusion1 decks2 decks
39%synergy
Alchemist's Refuge
50%inclusion1 decks2 decks
33%synergy
Maze of Ith
50%inclusion1 decks2 decks
47%synergy
Emergence Zone
50%inclusion1 decks2 decks
46%synergy
Command Beacon
50%inclusion1 decks2 decks
46%synergy
Yavimaya, Cradle of Growth
50%inclusion1 decks2 decks
28%synergy
Boseiju, Who Endures
50%inclusion1 decks2 decks
28%synergy
Reliquary Tower
50%inclusion1 decks2 decks
0%synergy
Three Tree City
50%inclusion1 decks2 decks
45%synergy
Otawara, Soaring City
50%inclusion1 decks2 decks
31%synergy
Mana Artifacts
Sol Ring
100%inclusion2 decks2 decks
19%synergy
Arcane Signet
50%inclusion1 decks2 decks
-13%synergy
Simic Signet
50%inclusion1 decks2 decks
18%synergy
Talisman of Curiosity
50%inclusion1 decks2 decks
29%synergy
Lands
Command Tower
100%inclusion2 decks2 decks
15%synergy
Misty Rainforest
100%inclusion2 decks2 decks
69%synergy
Breeding Pool
100%inclusion2 decks2 decks
55%synergy
Yavimaya Coast
100%inclusion2 decks2 decks
48%synergy
Barkchannel Pathway
100%inclusion2 decks2 decks
80%synergy
Tropical Island
100%inclusion2 decks2 decks
86%synergy
Island
100%inclusion2 decks2 decks
5%synergy
Forest
100%inclusion2 decks2 decks
5%synergy
Hedge Maze
100%inclusion2 decks2 decks
80%synergy
Rejuvenating Springs
100%inclusion2 decks2 decks
56%synergy
Dreamroot Cascade
100%inclusion2 decks2 decks
58%synergy
Hinterland Harbor
100%inclusion2 decks2 decks
41%synergy
Prismatic Vista
50%inclusion1 decks2 decks
43%synergy
Fabled Passage
50%inclusion1 decks2 decks
36%synergy
Windswept Heath
50%inclusion1 decks2 decks
40%synergy
Vineglimmer Snarl
50%inclusion1 decks2 decks
11%synergy
Sea Gate Restoration
50%inclusion1 decks2 decks
45%synergy
Verdant Catacombs
50%inclusion1 decks2 decks
40%synergy
Waterlogged Grove
50%inclusion1 decks2 decks
29%synergy
Temple of Mystery
50%inclusion1 decks2 decks
12%synergy
Sink into Stupor
50%inclusion1 decks2 decks
39%synergy
Willowrush Verge
50%inclusion1 decks2 decks
34%synergy
Flooded Grove
50%inclusion1 decks2 decks
9%synergy
Polluted Delta
50%inclusion1 decks2 decks
40%synergy
Flooded Strand
50%inclusion1 decks2 decks
39%synergy
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