Koma, Cosmos Serpent (Commander) - cEDH Ramp

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #307
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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Ancient Tomb
100%inclusion3 decks3 decks
91%synergy
The One Ring
100%inclusion3 decks3 decks
92%synergy
Cyclonic Rift
100%inclusion3 decks3 decks
74%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
Mana Vault
67%inclusion2 decks3 decks
60%synergy
Gaea's Cradle
67%inclusion2 decks3 decks
59%synergy
Force of Will
67%inclusion2 decks3 decks
57%synergy
Fierce Guardianship
67%inclusion2 decks3 decks
49%synergy
Creatures
Adrix and Nev, Twincasters
100%inclusion3 decks3 decks
92%synergy
Phyrexian Metamorph
100%inclusion3 decks3 decks
91%synergy
Sakashima of a Thousand Faces
100%inclusion3 decks3 decks
95%synergy
Saryth, the Viper's Fang
67%inclusion2 decks3 decks
65%synergy
Junk Winder
67%inclusion2 decks3 decks
60%synergy
Craterhoof Behemoth
67%inclusion2 decks3 decks
57%synergy
Birds of Paradise
67%inclusion2 decks3 decks
39%synergy
Hullbreaker Horror
67%inclusion2 decks3 decks
49%synergy
Jaheira, Friend of the Forest
33%inclusion1 decks3 decks
29%synergy
Octomancer
33%inclusion1 decks3 decks
29%synergy
Koma, World-Eater
33%inclusion1 decks3 decks
20%synergy
Kiora's Follower
33%inclusion1 decks3 decks
19%synergy
Consecrated Sphinx
33%inclusion1 decks3 decks
25%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
Spellseeker
33%inclusion1 decks3 decks
31%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
Gilded Drake
33%inclusion1 decks3 decks
31%synergy
Progenitor Mimic
33%inclusion1 decks3 decks
29%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
Archetype of Imagination
33%inclusion1 decks3 decks
29%synergy
Sakashima the Impostor
33%inclusion1 decks3 decks
31%synergy
Faerie Mastermind
33%inclusion1 decks3 decks
29%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
Clever Impersonator
33%inclusion1 decks3 decks
29%synergy
Guardian Augmenter
33%inclusion1 decks3 decks
32%synergy
Somberwald Sage
33%inclusion1 decks3 decks
32%synergy
Instants
Second Harvest
100%inclusion3 decks3 decks
94%synergy
An Offer You Can't Refuse
67%inclusion2 decks3 decks
43%synergy
Heroic Intervention
67%inclusion2 decks3 decks
36%synergy
Negate
67%inclusion2 decks3 decks
41%synergy
Archdruid's Charm
67%inclusion2 decks3 decks
60%synergy
Force of Vigor
67%inclusion2 decks3 decks
62%synergy
Nature's Claim
67%inclusion2 decks3 decks
57%synergy
Mana Drain
67%inclusion2 decks3 decks
51%synergy
Beast Within
67%inclusion2 decks3 decks
17%synergy
Swan Song
67%inclusion2 decks3 decks
47%synergy
Noxious Revival
67%inclusion2 decks3 decks
61%synergy
Force of Negation
67%inclusion2 decks3 decks
58%synergy
Stifle
67%inclusion2 decks3 decks
66%synergy
Simic Charm
67%inclusion2 decks3 decks
59%synergy
Counterspell
67%inclusion2 decks3 decks
17%synergy
Worldly Tutor
67%inclusion2 decks3 decks
51%synergy
Mystical Tutor
67%inclusion2 decks3 decks
57%synergy
Pongify
33%inclusion1 decks3 decks
8%synergy
Rapid Hybridization
33%inclusion1 decks3 decks
7%synergy
Trickbind
33%inclusion1 decks3 decks
33%synergy
Mental Misstep
33%inclusion1 decks3 decks
28%synergy
Krosan Grip
33%inclusion1 decks3 decks
26%synergy
Tyvar's Stand
33%inclusion1 decks3 decks
31%synergy
Turn Aside
33%inclusion1 decks3 decks
33%synergy
Mindbreak Trap
33%inclusion1 decks3 decks
28%synergy
Smuggler's Surprise
33%inclusion1 decks3 decks
32%synergy
Chord of Calling
33%inclusion1 decks3 decks
25%synergy
Dispel
33%inclusion1 decks3 decks
29%synergy
Flusterstorm
33%inclusion1 decks3 decks
27%synergy
Disallow
33%inclusion1 decks3 decks
32%synergy
Into the Flood Maw
33%inclusion1 decks3 decks
29%synergy
Tale's End
33%inclusion1 decks3 decks
33%synergy
Cryptic Command
33%inclusion1 decks3 decks
32%synergy
Arcane Denial
33%inclusion1 decks3 decks
11%synergy
Rewind
33%inclusion1 decks3 decks
30%synergy
Tamiyo's Safekeeping
33%inclusion1 decks3 decks
28%synergy
Double Major
33%inclusion1 decks3 decks
25%synergy
Pact of Negation
33%inclusion1 decks3 decks
26%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
Curse of the Swine
33%inclusion1 decks3 decks
23%synergy
Bribery
33%inclusion1 decks3 decks
33%synergy
Nature's Lore
33%inclusion1 decks3 decks
3%synergy
Cultivate
33%inclusion1 decks3 decks
-13%synergy
Personal Tutor
33%inclusion1 decks3 decks
32%synergy
Explosive Vegetation
33%inclusion1 decks3 decks
28%synergy
Irenicus's Vile Duplication
33%inclusion1 decks3 decks
27%synergy
Nylea's Intervention
33%inclusion1 decks3 decks
32%synergy
Explore
33%inclusion1 decks3 decks
13%synergy
Bala Ged Recovery
33%inclusion1 decks3 decks
23%synergy
Overwhelming Stampede
33%inclusion1 decks3 decks
21%synergy
Whelming Wave
33%inclusion1 decks3 decks
22%synergy
Sylvan Scrying
33%inclusion1 decks3 decks
28%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
Akroma's Memorial
33%inclusion1 decks3 decks
32%synergy
Winter Moon
33%inclusion1 decks3 decks
33%synergy
Swiftfoot Boots
33%inclusion1 decks3 decks
8%synergy
Emerald Medallion
33%inclusion1 decks3 decks
30%synergy
Sapphire Medallion
33%inclusion1 decks3 decks
30%synergy
Enchantments
Tribute to the World Tree
67%inclusion2 decks3 decks
60%synergy
Parallel Lives
67%inclusion2 decks3 decks
61%synergy
Mystic Remora
67%inclusion2 decks3 decks
51%synergy
Moonlit Meditation
50%inclusion1 decks2 decks
49%synergy
Kindred Discovery
33%inclusion1 decks3 decks
24%synergy
Doubling Season
33%inclusion1 decks3 decks
24%synergy
Cryptolith Rite
33%inclusion1 decks3 decks
30%synergy
Exploration
33%inclusion1 decks3 decks
20%synergy
Frozen Aether
33%inclusion1 decks3 decks
33%synergy
Wilderness Reclamation
33%inclusion1 decks3 decks
24%synergy
Unnatural Growth
33%inclusion1 decks3 decks
30%synergy
Burgeoning
33%inclusion1 decks3 decks
26%synergy
Asceticism
33%inclusion1 decks3 decks
30%synergy
Kenrith's Transformation
33%inclusion1 decks3 decks
29%synergy
Stasis
33%inclusion1 decks3 decks
33%synergy
Opposition
33%inclusion1 decks3 decks
33%synergy
Primal Vigor
33%inclusion1 decks3 decks
30%synergy
Elemental Bond
33%inclusion1 decks3 decks
28%synergy
Defense of the Heart
33%inclusion1 decks3 decks
31%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
Boseiju, Who Endures
100%inclusion3 decks3 decks
78%synergy
Otawara, Soaring City
100%inclusion3 decks3 decks
81%synergy
Yavimaya, Cradle of Growth
67%inclusion2 decks3 decks
45%synergy
Reliquary Tower
67%inclusion2 decks3 decks
17%synergy
Evendo, Waking Haven
50%inclusion1 decks2 decks
45%synergy
Wasteland
33%inclusion1 decks3 decks
32%synergy
Mistrise Village
33%inclusion1 decks3 decks
23%synergy
Alchemist's Refuge
33%inclusion1 decks3 decks
16%synergy
Maze of Ith
33%inclusion1 decks3 decks
30%synergy
Urza's Saga
33%inclusion1 decks3 decks
28%synergy
Scavenger Grounds
33%inclusion1 decks3 decks
29%synergy
Three Tree City
33%inclusion1 decks3 decks
28%synergy
Rogue's Passage
33%inclusion1 decks3 decks
12%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
78%synergy
Moss Diamond
33%inclusion1 decks3 decks
32%synergy
Sky Diamond
33%inclusion1 decks3 decks
32%synergy
Lotus Petal
33%inclusion1 decks3 decks
26%synergy
Fellwar Stone
33%inclusion1 decks3 decks
24%synergy
Mox Opal
33%inclusion1 decks3 decks
29%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
Rejuvenating Springs
100%inclusion3 decks3 decks
56%synergy
Prismatic Vista
67%inclusion2 decks3 decks
59%synergy
Breeding Pool
67%inclusion2 decks3 decks
20%synergy
Vineglimmer Snarl
67%inclusion2 decks3 decks
28%synergy
Yavimaya Coast
67%inclusion2 decks3 decks
14%synergy
Waterlogged Grove
67%inclusion2 decks3 decks
46%synergy
Tropical Island
67%inclusion2 decks3 decks
52%synergy
Island
67%inclusion2 decks3 decks
-29%synergy
Forest
67%inclusion2 decks3 decks
-29%synergy
Hinterland Harbor
67%inclusion2 decks3 decks
7%synergy
Simic Growth Chamber
33%inclusion1 decks3 decks
-15%synergy
Fabled Passage
33%inclusion1 decks3 decks
19%synergy
Barkchannel Pathway
33%inclusion1 decks3 decks
13%synergy
Snow-Covered Island
33%inclusion1 decks3 decks
27%synergy
Snow-Covered Forest
33%inclusion1 decks3 decks
27%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
Dreamroot Cascade
33%inclusion1 decks3 decks
-9%synergy
City of Brass
33%inclusion1 decks3 decks
27%synergy
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