Koma, Cosmos Serpent (Commander) - Expensive Upgraded Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #306
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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Seedborn Muse
100%inclusion2 decks2 decks
84%synergy
Gaea's Cradle
100%inclusion2 decks2 decks
93%synergy
Crop Rotation
50%inclusion1 decks2 decks
37%synergy
Rhystic Study
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28%synergy
Fierce Guardianship
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33%synergy
Cyclonic Rift
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24%synergy
Creatures
Elvish Mystic
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76%synergy
Llanowar Elves
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72%synergy
Fyndhorn Elves
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84%synergy
Volatile Stormdrake
50%inclusion1 decks2 decks
48%synergy
Collector Ouphe
50%inclusion1 decks2 decks
49%synergy
Adrix and Nev, Twincasters
50%inclusion1 decks2 decks
42%synergy
Garruk's Packleader
50%inclusion1 decks2 decks
48%synergy
Koma, World-Eater
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37%synergy
Scavenging Ooze
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47%synergy
Eternal Witness
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29%synergy
Enduring Vitality
50%inclusion1 decks2 decks
43%synergy
Roaming Throne
50%inclusion1 decks2 decks
42%synergy
Thrasios, Triton Hero
50%inclusion1 decks2 decks
42%synergy
Arbor Elf
50%inclusion1 decks2 decks
44%synergy
Junk Winder
50%inclusion1 decks2 decks
43%synergy
Druid of Purification
50%inclusion1 decks2 decks
49%synergy
Murkfiend Liege
50%inclusion1 decks2 decks
36%synergy
Craterhoof Behemoth
50%inclusion1 decks2 decks
40%synergy
Kinnan, Bonder Prodigy
50%inclusion1 decks2 decks
47%synergy
Spark Double
50%inclusion1 decks2 decks
40%synergy
Sakashima of a Thousand Faces
50%inclusion1 decks2 decks
45%synergy
Pollywog Prodigy
50%inclusion1 decks2 decks
43%synergy
Sakashima the Impostor
50%inclusion1 decks2 decks
47%synergy
Oviya, Automech Artisan
50%inclusion1 decks2 decks
48%synergy
Manglehorn
50%inclusion1 decks2 decks
47%synergy
Mockingbird
50%inclusion1 decks2 decks
47%synergy
Arixmethes, Slumbering Isle
50%inclusion1 decks2 decks
37%synergy
Gretchen Titchwillow
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48%synergy
Serpent of Yawning Depths
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44%synergy
Birds of Paradise
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22%synergy
Hullbreaker Horror
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32%synergy
Sakura-Tribe Elder
50%inclusion1 decks2 decks
31%synergy
Uro, Titan of Nature's Wrath
50%inclusion1 decks2 decks
40%synergy
Spawning Kraken
50%inclusion1 decks2 decks
43%synergy
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Pongify
100%inclusion2 decks2 decks
75%synergy
Rapid Hybridization
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74%synergy
An Offer You Can't Refuse
100%inclusion2 decks2 decks
76%synergy
Beast Within
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50%synergy
Counterspell
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50%synergy
Consult the Star Charts
100%inclusion1 decks1 decks
98%synergy
Divert Disaster
100%inclusion1 decks1 decks
99%synergy
Diviner's Portent
50%inclusion1 decks2 decks
50%synergy
Retraction Helix
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50%synergy
Return of the Wildspeaker
50%inclusion1 decks2 decks
40%synergy
Negate
50%inclusion1 decks2 decks
24%synergy
Growth Spiral
50%inclusion1 decks2 decks
5%synergy
Plasm Capture
50%inclusion1 decks2 decks
47%synergy
Stubborn Denial
50%inclusion1 decks2 decks
47%synergy
Krosan Grip
50%inclusion1 decks2 decks
42%synergy
Force of Vigor
50%inclusion1 decks2 decks
45%synergy
Second Harvest
50%inclusion1 decks2 decks
44%synergy
Dispel
50%inclusion1 decks2 decks
45%synergy
Harrow
50%inclusion1 decks2 decks
38%synergy
Entish Restoration
50%inclusion1 decks2 decks
41%synergy
Mana Drain
50%inclusion1 decks2 decks
34%synergy
Disrupt
50%inclusion1 decks2 decks
50%synergy
Flusterstorm
50%inclusion1 decks2 decks
43%synergy
Swan Song
50%inclusion1 decks2 decks
31%synergy
Jwari Disruption
50%inclusion1 decks2 decks
49%synergy
Delay
50%inclusion1 decks2 decks
48%synergy
Arcane Denial
50%inclusion1 decks2 decks
27%synergy
Pull from Tomorrow
50%inclusion1 decks2 decks
47%synergy
Tamiyo's Safekeeping
50%inclusion1 decks2 decks
44%synergy
Mana Leak
50%inclusion1 decks2 decks
48%synergy
Spell Pierce
50%inclusion1 decks2 decks
47%synergy
Minor Misstep
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50%synergy
Miscast
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48%synergy
Double Major
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42%synergy
Tangle
50%inclusion1 decks2 decks
50%synergy
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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
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69%synergy
Rampant Growth
100%inclusion2 decks2 decks
59%synergy
Irenicus's Vile Duplication
100%inclusion2 decks2 decks
94%synergy
Overwhelming Stampede
100%inclusion2 decks2 decks
88%synergy
Eldritch Evolution
50%inclusion1 decks2 decks
46%synergy
Kodama's Reach
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14%synergy
Ranger's Path
50%inclusion1 decks2 decks
49%synergy
Neoform
50%inclusion1 decks2 decks
46%synergy
Cultivate
50%inclusion1 decks2 decks
3%synergy
Explosive Vegetation
50%inclusion1 decks2 decks
44%synergy
Shamanic Revelation
50%inclusion1 decks2 decks
45%synergy
Migration Path
50%inclusion1 decks2 decks
47%synergy
Whelming Wave
50%inclusion1 decks2 decks
39%synergy
Raise the Palisade
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44%synergy
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Null Rod
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50%synergy
Mirror Box
50%inclusion1 decks2 decks
47%synergy
Combine Chrysalis
50%inclusion1 decks2 decks
46%synergy
Swiftfoot Boots
50%inclusion1 decks2 decks
24%synergy
Lightning Greaves
50%inclusion1 decks2 decks
28%synergy
Enchantments
Wild Growth
100%inclusion2 decks2 decks
91%synergy
Mystic Remora
100%inclusion2 decks2 decks
85%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
Tribute to the World Tree
50%inclusion1 decks2 decks
44%synergy
Parallel Lives
50%inclusion1 decks2 decks
44%synergy
Elemental Bond
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44%synergy
Paradox Haze
50%inclusion1 decks2 decks
50%synergy
Growing Rites of Itlimoc
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44%synergy
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Oko, Thief of Crowns
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43%synergy
Utility Lands
Emergence Zone
100%inclusion2 decks2 decks
96%synergy
Reliquary Tower
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0%synergy
Dark Depths
50%inclusion1 decks2 decks
43%synergy
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Sol Ring
100%inclusion2 decks2 decks
19%synergy
Arcane Signet
50%inclusion1 decks2 decks
-13%synergy
Simic Signet
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18%synergy
Talisman of Curiosity
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28%synergy
Lands
Command Tower
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15%synergy
Breeding Pool
100%inclusion2 decks2 decks
54%synergy
Yavimaya Coast
100%inclusion2 decks2 decks
47%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
Flooded Grove
100%inclusion2 decks2 decks
59%synergy
Hinterland Harbor
100%inclusion2 decks2 decks
40%synergy
Misty Rainforest
50%inclusion1 decks2 decks
19%synergy
Vineglimmer Snarl
50%inclusion1 decks2 decks
12%synergy
Tangled Islet
50%inclusion1 decks2 decks
34%synergy
Waterlogged Grove
50%inclusion1 decks2 decks
29%synergy
Temple of Mystery
50%inclusion1 decks2 decks
12%synergy
Jwari Disruption
50%inclusion1 decks2 decks
49%synergy
Rimewood Falls
50%inclusion1 decks2 decks
41%synergy
Willowrush Verge
50%inclusion1 decks2 decks
33%synergy
Dreamroot Cascade
50%inclusion1 decks2 decks
8%synergy
Hall of Tagsin
50%inclusion1 decks2 decks
50%synergy
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