Koma, Cosmos Serpent (Commander) - cEDH Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #296
3decks
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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 One Ring
100%inclusion3 decks3 decks
92%synergy
Mana Vault
100%inclusion3 decks3 decks
94%synergy
Cyclonic Rift
100%inclusion3 decks3 decks
74%synergy
Ancient Tomb
67%inclusion2 decks3 decks
57%synergy
Crop Rotation
67%inclusion2 decks3 decks
53%synergy
Seedborn Muse
67%inclusion2 decks3 decks
51%synergy
Rhystic Study
67%inclusion2 decks3 decks
45%synergy
Gaea's Cradle
67%inclusion2 decks3 decks
59%synergy
Fierce Guardianship
67%inclusion2 decks3 decks
49%synergy
Worldly Tutor
67%inclusion2 decks3 decks
51%synergy
Creatures
Adrix and Nev, Twincasters
100%inclusion3 decks3 decks
92%synergy
Junk Winder
100%inclusion3 decks3 decks
93%synergy
Phyrexian Metamorph
67%inclusion2 decks3 decks
58%synergy
Craterhoof Behemoth
67%inclusion2 decks3 decks
57%synergy
Sakashima of a Thousand Faces
67%inclusion2 decks3 decks
62%synergy
Birds of Paradise
67%inclusion2 decks3 decks
39%synergy
Hullbreaker Horror
67%inclusion2 decks3 decks
49%synergy
Trophy Mage
33%inclusion1 decks3 decks
28%synergy
Jaheira, Friend of the Forest
33%inclusion1 decks3 decks
29%synergy
Peregrine Drake
33%inclusion1 decks3 decks
29%synergy
Garruk's Packleader
33%inclusion1 decks3 decks
31%synergy
Octomancer
33%inclusion1 decks3 decks
29%synergy
Koma, World-Eater
33%inclusion1 decks3 decks
20%synergy
Kiora's Follower
33%inclusion1 decks3 decks
18%synergy
Tishana's Tidebinder
33%inclusion1 decks3 decks
28%synergy
Inga and Esika
33%inclusion1 decks3 decks
31%synergy
Incubation Druid
33%inclusion1 decks3 decks
26%synergy
Enduring Vitality
33%inclusion1 decks3 decks
26%synergy
Roaming Throne
33%inclusion1 decks3 decks
25%synergy
Ornithopter of Paradise
33%inclusion1 decks3 decks
29%synergy
Walking Ballista
33%inclusion1 decks3 decks
29%synergy
Saryth, the Viper's Fang
33%inclusion1 decks3 decks
32%synergy
Ilysian Caryatid
33%inclusion1 decks3 decks
29%synergy
Murkfiend Liege
33%inclusion1 decks3 decks
19%synergy
Aesi, Tyrant of Gyre Strait
33%inclusion1 decks3 decks
16%synergy
Archetype of Endurance
33%inclusion1 decks3 decks
32%synergy
Progenitor Mimic
33%inclusion1 decks3 decks
29%synergy
Lotus Cobra
33%inclusion1 decks3 decks
19%synergy
Nyxbloom Ancient
33%inclusion1 decks3 decks
26%synergy
Spark Double
33%inclusion1 decks3 decks
24%synergy
Augmenter Pugilist
33%inclusion1 decks3 decks
32%synergy
Enduring Curiosity
33%inclusion1 decks3 decks
30%synergy
Hulking Raptor
33%inclusion1 decks3 decks
33%synergy
Archetype of Imagination
33%inclusion1 decks3 decks
29%synergy
Sakashima the Impostor
33%inclusion1 decks3 decks
31%synergy
Tireless Provisioner
33%inclusion1 decks3 decks
18%synergy
Zopandrel, Hunger Dominus
33%inclusion1 decks3 decks
31%synergy
Ohran Frostfang
33%inclusion1 decks3 decks
30%synergy
Phantasmal Image
33%inclusion1 decks3 decks
30%synergy
Glasspool Mimic
33%inclusion1 decks3 decks
29%synergy
Tribute Mage
33%inclusion1 decks3 decks
32%synergy
Clever Impersonator
33%inclusion1 decks3 decks
29%synergy
Cankerbloom
33%inclusion1 decks3 decks
30%synergy
Thorn Mammoth
33%inclusion1 decks3 decks
31%synergy
Sakura-Tribe Elder
33%inclusion1 decks3 decks
14%synergy
Deadeye Navigator
33%inclusion1 decks3 decks
30%synergy
Somberwald Sage
33%inclusion1 decks3 decks
32%synergy
Jin-Gitaxias, Progress Tyrant
33%inclusion1 decks3 decks
31%synergy
Trinket Mage
33%inclusion1 decks3 decks
31%synergy
Instants
Heroic Intervention
67%inclusion2 decks3 decks
36%synergy
Archdruid's Charm
67%inclusion2 decks3 decks
60%synergy
Second Harvest
67%inclusion2 decks3 decks
60%synergy
Mana Drain
67%inclusion2 decks3 decks
51%synergy
Beast Within
67%inclusion2 decks3 decks
16%synergy
Counterspell
67%inclusion2 decks3 decks
17%synergy
Pact of Negation
67%inclusion2 decks3 decks
59%synergy
Mystical Tutor
67%inclusion2 decks3 decks
57%synergy
Rapid Hybridization
33%inclusion1 decks3 decks
7%synergy
Trickbind
33%inclusion1 decks3 decks
33%synergy
An Offer You Can't Refuse
33%inclusion1 decks3 decks
10%synergy
Return of the Wildspeaker
33%inclusion1 decks3 decks
23%synergy
Negate
33%inclusion1 decks3 decks
7%synergy
Tyvar's Stand
33%inclusion1 decks3 decks
31%synergy
Mindbreak Trap
33%inclusion1 decks3 decks
29%synergy
Mystic Reflection
33%inclusion1 decks3 decks
31%synergy
Force of Vigor
33%inclusion1 decks3 decks
29%synergy
Smuggler's Surprise
33%inclusion1 decks3 decks
32%synergy
Chord of Calling
33%inclusion1 decks3 decks
26%synergy
Nature's Claim
33%inclusion1 decks3 decks
23%synergy
Resculpt
33%inclusion1 decks3 decks
27%synergy
Flusterstorm
33%inclusion1 decks3 decks
27%synergy
Disallow
33%inclusion1 decks3 decks
32%synergy
Swan Song
33%inclusion1 decks3 decks
14%synergy
Tale's End
33%inclusion1 decks3 decks
33%synergy
Force of Will
33%inclusion1 decks3 decks
23%synergy
Noxious Revival
33%inclusion1 decks3 decks
27%synergy
Cryptic Command
33%inclusion1 decks3 decks
32%synergy
Arcane Denial
33%inclusion1 decks3 decks
11%synergy
Force of Negation
33%inclusion1 decks3 decks
25%synergy
Stifle
33%inclusion1 decks3 decks
33%synergy
Rewind
33%inclusion1 decks3 decks
30%synergy
Simic Charm
33%inclusion1 decks3 decks
25%synergy
Double Major
33%inclusion1 decks3 decks
25%synergy
Sorceries
Quantum Misalignment
67%inclusion2 decks3 decks
64%synergy
Finale of Devastation
67%inclusion2 decks3 decks
55%synergy
Rampant Growth
67%inclusion2 decks3 decks
26%synergy
Kodama's Reach
33%inclusion1 decks3 decks
-3%synergy
Skyshroud Claim
33%inclusion1 decks3 decks
24%synergy
Triumph of the Hordes
33%inclusion1 decks3 decks
30%synergy
Fabricate
33%inclusion1 decks3 decks
27%synergy
Farseek
33%inclusion1 decks3 decks
9%synergy
Curse of the Swine
33%inclusion1 decks3 decks
22%synergy
Nature's Lore
33%inclusion1 decks3 decks
3%synergy
Cultivate
33%inclusion1 decks3 decks
-14%synergy
Vastwood Surge
33%inclusion1 decks3 decks
32%synergy
Natural Order
33%inclusion1 decks3 decks
32%synergy
Rishkar's Expertise
33%inclusion1 decks3 decks
25%synergy
Irenicus's Vile Duplication
33%inclusion1 decks3 decks
27%synergy
Nylea's Intervention
33%inclusion1 decks3 decks
32%synergy
Bala Ged Recovery
33%inclusion1 decks3 decks
23%synergy
Overwhelming Stampede
33%inclusion1 decks3 decks
21%synergy
Genesis Wave
33%inclusion1 decks3 decks
29%synergy
Whelming Wave
33%inclusion1 decks3 decks
22%synergy
Sylvan Scrying
33%inclusion1 decks3 decks
28%synergy
Solve the Equation
33%inclusion1 decks3 decks
31%synergy
Rite of Replication
33%inclusion1 decks3 decks
26%synergy
Utility Artifacts
Winter Orb
67%inclusion2 decks3 decks
66%synergy
Coat of Arms
67%inclusion2 decks3 decks
65%synergy
Helm of the Host
67%inclusion2 decks3 decks
61%synergy
Static Orb
33%inclusion1 decks3 decks
33%synergy
Manifold Key
33%inclusion1 decks3 decks
33%synergy
Mirror Box
33%inclusion1 decks3 decks
30%synergy
Skullclamp
33%inclusion1 decks3 decks
32%synergy
Winter Moon
33%inclusion1 decks3 decks
33%synergy
Lightning Greaves
33%inclusion1 decks3 decks
11%synergy
Emerald Medallion
33%inclusion1 decks3 decks
30%synergy
Staff of Domination
33%inclusion1 decks3 decks
32%synergy
Isochron Scepter
33%inclusion1 decks3 decks
31%synergy
Sapphire Medallion
33%inclusion1 decks3 decks
30%synergy
Enchantments
Parallel Lives
100%inclusion3 decks3 decks
94%synergy
Moonlit Meditation
100%inclusion1 decks1 decks
99%synergy
Tribute to the World Tree
67%inclusion2 decks3 decks
60%synergy
Elemental Bond
67%inclusion2 decks3 decks
61%synergy
Defense of the Heart
67%inclusion2 decks3 decks
64%synergy
Kindred Discovery
33%inclusion1 decks3 decks
23%synergy
Doubling Season
33%inclusion1 decks3 decks
24%synergy
Cryptolith Rite
33%inclusion1 decks3 decks
30%synergy
Exploration
33%inclusion1 decks3 decks
20%synergy
Verity Circle
33%inclusion1 decks3 decks
33%synergy
Pattern of Rebirth
33%inclusion1 decks3 decks
33%synergy
Wilderness Reclamation
33%inclusion1 decks3 decks
24%synergy
Unnatural Growth
33%inclusion1 decks3 decks
30%synergy
Song of the Dryads
33%inclusion1 decks3 decks
32%synergy
Burgeoning
33%inclusion1 decks3 decks
26%synergy
Mystic Remora
33%inclusion1 decks3 decks
18%synergy
Asceticism
33%inclusion1 decks3 decks
30%synergy
Opposition
33%inclusion1 decks3 decks
33%synergy
Primal Vigor
33%inclusion1 decks3 decks
30%synergy
Battles
Invasion of Ikoria
33%inclusion1 decks3 decks
29%synergy
Invasion of Segovia
33%inclusion1 decks3 decks
33%synergy
Planeswalkers
Oko, Thief of Crowns
33%inclusion1 decks3 decks
26%synergy
Utility Lands
Evendo, Waking Haven
100%inclusion1 decks1 decks
95%synergy
Urza's Saga
67%inclusion2 decks3 decks
61%synergy
Yavimaya, Cradle of Growth
67%inclusion2 decks3 decks
45%synergy
Boseiju, Who Endures
67%inclusion2 decks3 decks
44%synergy
Otawara, Soaring City
67%inclusion2 decks3 decks
48%synergy
Wasteland
33%inclusion1 decks3 decks
32%synergy
Alchemist's Refuge
33%inclusion1 decks3 decks
16%synergy
Scavenger Grounds
33%inclusion1 decks3 decks
29%synergy
Reliquary Tower
33%inclusion1 decks3 decks
-17%synergy
Three Tree City
33%inclusion1 decks3 decks
28%synergy
Rogue's Passage
33%inclusion1 decks3 decks
11%synergy
Mana Artifacts
Arcane Signet
100%inclusion3 decks3 decks
37%synergy
Sol Ring
100%inclusion3 decks3 decks
19%synergy
Talisman of Curiosity
100%inclusion3 decks3 decks
79%synergy
Moss Diamond
33%inclusion1 decks3 decks
32%synergy
Sky Diamond
33%inclusion1 decks3 decks
32%synergy
Simic Signet
33%inclusion1 decks3 decks
1%synergy
Fellwar Stone
33%inclusion1 decks3 decks
24%synergy
Lands
Prismatic Vista
100%inclusion3 decks3 decks
93%synergy
Command Tower
100%inclusion3 decks3 decks
15%synergy
Misty Rainforest
100%inclusion3 decks3 decks
69%synergy
Breeding Pool
100%inclusion3 decks3 decks
55%synergy
Yavimaya Coast
100%inclusion3 decks3 decks
48%synergy
Rejuvenating Springs
100%inclusion3 decks3 decks
56%synergy
Fabled Passage
67%inclusion2 decks3 decks
52%synergy
Waterlogged Grove
67%inclusion2 decks3 decks
46%synergy
Island
67%inclusion2 decks3 decks
-29%synergy
Forest
67%inclusion2 decks3 decks
-29%synergy
Dreamroot Cascade
67%inclusion2 decks3 decks
25%synergy
Windswept Heath
33%inclusion1 decks3 decks
23%synergy
Vineglimmer Snarl
33%inclusion1 decks3 decks
-5%synergy
Barkchannel Pathway
33%inclusion1 decks3 decks
13%synergy
Snow-Covered Island
33%inclusion1 decks3 decks
26%synergy
Snow-Covered Forest
33%inclusion1 decks3 decks
27%synergy
Verdant Catacombs
33%inclusion1 decks3 decks
24%synergy
Tropical Island
33%inclusion1 decks3 decks
19%synergy
Glasspool Mimic
33%inclusion1 decks3 decks
29%synergy
Mana Confluence
33%inclusion1 decks3 decks
28%synergy
Bala Ged Recovery
33%inclusion1 decks3 decks
23%synergy
Polluted Delta
33%inclusion1 decks3 decks
23%synergy
City of Brass
33%inclusion1 decks3 decks
27%synergy
Flooded Strand
33%inclusion1 decks3 decks
22%synergy
Hinterland Harbor
33%inclusion1 decks3 decks
-26%synergy
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