Koma, Cosmos Serpent (Commander) - cEDH Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #307
4decks
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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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Adrix and Nev, Twincasters
100%inclusion4 decks4 decks
92%synergy
Game Changers
The One Ring
100%inclusion4 decks4 decks
92%synergy
Cyclonic Rift
100%inclusion4 decks4 decks
74%synergy
Ancient Tomb
75%inclusion3 decks4 decks
66%synergy
Seedborn Muse
75%inclusion3 decks4 decks
59%synergy
Rhystic Study
75%inclusion3 decks4 decks
53%synergy
Mana Vault
75%inclusion3 decks4 decks
69%synergy
Fierce Guardianship
75%inclusion3 decks4 decks
58%synergy
Mystical Tutor
75%inclusion3 decks4 decks
66%synergy
Crop Rotation
50%inclusion2 decks4 decks
37%synergy
Gaea's Cradle
50%inclusion2 decks4 decks
43%synergy
Creatures
Phyrexian Metamorph
75%inclusion3 decks4 decks
66%synergy
Junk Winder
75%inclusion3 decks4 decks
68%synergy
Sakashima of a Thousand Faces
75%inclusion3 decks4 decks
70%synergy
Birds of Paradise
75%inclusion3 decks4 decks
47%synergy
Saryth, the Viper's Fang
50%inclusion2 decks4 decks
48%synergy
Craterhoof Behemoth
50%inclusion2 decks4 decks
40%synergy
Hullbreaker Horror
50%inclusion2 decks4 decks
32%synergy
Trophy Mage
25%inclusion1 decks4 decks
20%synergy
Jaheira, Friend of the Forest
25%inclusion1 decks4 decks
21%synergy
Peregrine Drake
25%inclusion1 decks4 decks
21%synergy
Garruk's Packleader
25%inclusion1 decks4 decks
23%synergy
Octomancer
25%inclusion1 decks4 decks
20%synergy
Koma, World-Eater
25%inclusion1 decks4 decks
12%synergy
Kiora's Follower
25%inclusion1 decks4 decks
10%synergy
Tishana's Tidebinder
25%inclusion1 decks4 decks
19%synergy
Consecrated Sphinx
25%inclusion1 decks4 decks
16%synergy
Inga and Esika
25%inclusion1 decks4 decks
22%synergy
Incubation Druid
25%inclusion1 decks4 decks
17%synergy
Enduring Vitality
25%inclusion1 decks4 decks
18%synergy
Roaming Throne
25%inclusion1 decks4 decks
17%synergy
Ornithopter of Paradise
25%inclusion1 decks4 decks
20%synergy
Spellseeker
25%inclusion1 decks4 decks
23%synergy
Walking Ballista
25%inclusion1 decks4 decks
21%synergy
Ilysian Caryatid
25%inclusion1 decks4 decks
21%synergy
Murkfiend Liege
25%inclusion1 decks4 decks
11%synergy
Aesi, Tyrant of Gyre Strait
25%inclusion1 decks4 decks
8%synergy
Archetype of Endurance
25%inclusion1 decks4 decks
24%synergy
Gilded Drake
25%inclusion1 decks4 decks
23%synergy
Progenitor Mimic
25%inclusion1 decks4 decks
20%synergy
Lotus Cobra
25%inclusion1 decks4 decks
11%synergy
Nyxbloom Ancient
25%inclusion1 decks4 decks
18%synergy
Spark Double
25%inclusion1 decks4 decks
15%synergy
Augmenter Pugilist
25%inclusion1 decks4 decks
23%synergy
Enduring Curiosity
25%inclusion1 decks4 decks
22%synergy
Hulking Raptor
25%inclusion1 decks4 decks
25%synergy
Archetype of Imagination
25%inclusion1 decks4 decks
21%synergy
Sakashima the Impostor
25%inclusion1 decks4 decks
22%synergy
Faerie Mastermind
25%inclusion1 decks4 decks
20%synergy
Tireless Provisioner
25%inclusion1 decks4 decks
10%synergy
Zopandrel, Hunger Dominus
25%inclusion1 decks4 decks
23%synergy
Ohran Frostfang
25%inclusion1 decks4 decks
21%synergy
Phantasmal Image
25%inclusion1 decks4 decks
22%synergy
Glasspool Mimic
25%inclusion1 decks4 decks
21%synergy
Tribute Mage
25%inclusion1 decks4 decks
23%synergy
Clever Impersonator
25%inclusion1 decks4 decks
20%synergy
Cankerbloom
25%inclusion1 decks4 decks
22%synergy
Thorn Mammoth
25%inclusion1 decks4 decks
23%synergy
Guardian Augmenter
25%inclusion1 decks4 decks
24%synergy
Sakura-Tribe Elder
25%inclusion1 decks4 decks
6%synergy
Deadeye Navigator
25%inclusion1 decks4 decks
22%synergy
Instants
Heroic Intervention
75%inclusion3 decks4 decks
45%synergy
Second Harvest
75%inclusion3 decks4 decks
69%synergy
Mana Drain
75%inclusion3 decks4 decks
59%synergy
Beast Within
75%inclusion3 decks4 decks
25%synergy
Counterspell
75%inclusion3 decks4 decks
25%synergy
Trickbind
50%inclusion2 decks4 decks
50%synergy
An Offer You Can't Refuse
50%inclusion2 decks4 decks
27%synergy
Negate
50%inclusion2 decks4 decks
24%synergy
Archdruid's Charm
50%inclusion2 decks4 decks
44%synergy
Force of Vigor
50%inclusion2 decks4 decks
45%synergy
Nature's Claim
50%inclusion2 decks4 decks
40%synergy
Swan Song
50%inclusion2 decks4 decks
31%synergy
Force of Will
50%inclusion2 decks4 decks
40%synergy
Noxious Revival
50%inclusion2 decks4 decks
44%synergy
Force of Negation
50%inclusion2 decks4 decks
41%synergy
Stifle
50%inclusion2 decks4 decks
49%synergy
Simic Charm
50%inclusion2 decks4 decks
42%synergy
Worldly Tutor
50%inclusion2 decks4 decks
35%synergy
Pact of Negation
50%inclusion2 decks4 decks
43%synergy
Pongify
25%inclusion1 decks4 decks
0%synergy
Rapid Hybridization
25%inclusion1 decks4 decks
-1%synergy
Mental Misstep
25%inclusion1 decks4 decks
19%synergy
Return of the Wildspeaker
25%inclusion1 decks4 decks
15%synergy
Krosan Grip
25%inclusion1 decks4 decks
17%synergy
Tyvar's Stand
25%inclusion1 decks4 decks
22%synergy
Turn Aside
25%inclusion1 decks4 decks
24%synergy
Mindbreak Trap
25%inclusion1 decks4 decks
20%synergy
Mystic Reflection
25%inclusion1 decks4 decks
22%synergy
Smuggler's Surprise
25%inclusion1 decks4 decks
23%synergy
Chord of Calling
25%inclusion1 decks4 decks
17%synergy
Dispel
25%inclusion1 decks4 decks
20%synergy
Resculpt
25%inclusion1 decks4 decks
19%synergy
Flusterstorm
25%inclusion1 decks4 decks
18%synergy
Disallow
25%inclusion1 decks4 decks
23%synergy
Into the Flood Maw
25%inclusion1 decks4 decks
21%synergy
Tale's End
25%inclusion1 decks4 decks
24%synergy
Cryptic Command
25%inclusion1 decks4 decks
24%synergy
Arcane Denial
25%inclusion1 decks4 decks
2%synergy
Rewind
25%inclusion1 decks4 decks
22%synergy
Tamiyo's Safekeeping
25%inclusion1 decks4 decks
19%synergy
Double Major
25%inclusion1 decks4 decks
17%synergy
Sorceries
Rampant Growth
75%inclusion3 decks4 decks
34%synergy
Kodama's Reach
50%inclusion2 decks4 decks
14%synergy
Quantum Misalignment
50%inclusion2 decks4 decks
47%synergy
Skyshroud Claim
50%inclusion2 decks4 decks
41%synergy
Fabricate
50%inclusion2 decks4 decks
43%synergy
Curse of the Swine
50%inclusion2 decks4 decks
39%synergy
Finale of Devastation
50%inclusion2 decks4 decks
38%synergy
Nature's Lore
50%inclusion2 decks4 decks
19%synergy
Cultivate
50%inclusion2 decks4 decks
3%synergy
Triumph of the Hordes
25%inclusion1 decks4 decks
22%synergy
Farseek
25%inclusion1 decks4 decks
0%synergy
Bribery
25%inclusion1 decks4 decks
25%synergy
Vastwood Surge
25%inclusion1 decks4 decks
24%synergy
Natural Order
25%inclusion1 decks4 decks
24%synergy
Personal Tutor
25%inclusion1 decks4 decks
24%synergy
Rishkar's Expertise
25%inclusion1 decks4 decks
17%synergy
Explosive Vegetation
25%inclusion1 decks4 decks
19%synergy
Irenicus's Vile Duplication
25%inclusion1 decks4 decks
19%synergy
Nylea's Intervention
25%inclusion1 decks4 decks
24%synergy
Explore
25%inclusion1 decks4 decks
5%synergy
Bala Ged Recovery
25%inclusion1 decks4 decks
15%synergy
Overwhelming Stampede
25%inclusion1 decks4 decks
13%synergy
Genesis Wave
25%inclusion1 decks4 decks
21%synergy
Whelming Wave
25%inclusion1 decks4 decks
14%synergy
Sylvan Scrying
25%inclusion1 decks4 decks
19%synergy
Solve the Equation
25%inclusion1 decks4 decks
23%synergy
Rite of Replication
25%inclusion1 decks4 decks
18%synergy
Utility Artifacts
Winter Orb
75%inclusion3 decks4 decks
75%synergy
Static Orb
50%inclusion2 decks4 decks
50%synergy
Coat of Arms
50%inclusion2 decks4 decks
49%synergy
Helm of the Host
50%inclusion2 decks4 decks
45%synergy
Manifold Key
25%inclusion1 decks4 decks
24%synergy
Mirror Box
25%inclusion1 decks4 decks
22%synergy
Skullclamp
25%inclusion1 decks4 decks
24%synergy
Akroma's Memorial
25%inclusion1 decks4 decks
24%synergy
Winter Moon
25%inclusion1 decks4 decks
25%synergy
Swiftfoot Boots
25%inclusion1 decks4 decks
-1%synergy
Lightning Greaves
25%inclusion1 decks4 decks
3%synergy
Emerald Medallion
25%inclusion1 decks4 decks
22%synergy
Staff of Domination
25%inclusion1 decks4 decks
23%synergy
Isochron Scepter
25%inclusion1 decks4 decks
23%synergy
Sapphire Medallion
25%inclusion1 decks4 decks
22%synergy
Enchantments
Tribute to the World Tree
75%inclusion3 decks4 decks
69%synergy
Parallel Lives
75%inclusion3 decks4 decks
69%synergy
Mystic Remora
50%inclusion2 decks4 decks
35%synergy
Elemental Bond
50%inclusion2 decks4 decks
44%synergy
Defense of the Heart
50%inclusion2 decks4 decks
48%synergy
Moonlit Meditation
50%inclusion1 decks2 decks
49%synergy
Kindred Discovery
25%inclusion1 decks4 decks
15%synergy
Doubling Season
25%inclusion1 decks4 decks
15%synergy
Cryptolith Rite
25%inclusion1 decks4 decks
22%synergy
Exploration
25%inclusion1 decks4 decks
12%synergy
Verity Circle
25%inclusion1 decks4 decks
24%synergy
Frozen Aether
25%inclusion1 decks4 decks
25%synergy
Pattern of Rebirth
25%inclusion1 decks4 decks
25%synergy
Wilderness Reclamation
25%inclusion1 decks4 decks
16%synergy
Unnatural Growth
25%inclusion1 decks4 decks
22%synergy
Song of the Dryads
25%inclusion1 decks4 decks
23%synergy
Burgeoning
25%inclusion1 decks4 decks
18%synergy
Asceticism
25%inclusion1 decks4 decks
22%synergy
Kenrith's Transformation
25%inclusion1 decks4 decks
21%synergy
Stasis
25%inclusion1 decks4 decks
25%synergy
Opposition
25%inclusion1 decks4 decks
25%synergy
Primal Vigor
25%inclusion1 decks4 decks
22%synergy
Battles
Invasion of Ikoria
25%inclusion1 decks4 decks
21%synergy
Invasion of Segovia
25%inclusion1 decks4 decks
24%synergy
Planeswalkers
Oko, Thief of Crowns
25%inclusion1 decks4 decks
18%synergy
Utility Lands
Boseiju, Who Endures
75%inclusion3 decks4 decks
53%synergy
Otawara, Soaring City
75%inclusion3 decks4 decks
56%synergy
Urza's Saga
50%inclusion2 decks4 decks
44%synergy
Yavimaya, Cradle of Growth
50%inclusion2 decks4 decks
28%synergy
Reliquary Tower
50%inclusion2 decks4 decks
0%synergy
Evendo, Waking Haven
50%inclusion1 decks2 decks
45%synergy
Wasteland
25%inclusion1 decks4 decks
24%synergy
Mistrise Village
25%inclusion1 decks4 decks
14%synergy
Alchemist's Refuge
25%inclusion1 decks4 decks
8%synergy
Maze of Ith
25%inclusion1 decks4 decks
22%synergy
Scavenger Grounds
25%inclusion1 decks4 decks
21%synergy
Three Tree City
25%inclusion1 decks4 decks
20%synergy
Rogue's Passage
25%inclusion1 decks4 decks
3%synergy
Mana Artifacts
Arcane Signet
100%inclusion4 decks4 decks
37%synergy
Sol Ring
100%inclusion4 decks4 decks
19%synergy
Talisman of Curiosity
100%inclusion4 decks4 decks
78%synergy
Moss Diamond
25%inclusion1 decks4 decks
24%synergy
Sky Diamond
25%inclusion1 decks4 decks
24%synergy
Lotus Petal
25%inclusion1 decks4 decks
18%synergy
Simic Signet
25%inclusion1 decks4 decks
-7%synergy
Fellwar Stone
25%inclusion1 decks4 decks
15%synergy
Mox Opal
25%inclusion1 decks4 decks
20%synergy
Chrome Mox
25%inclusion1 decks4 decks
18%synergy
Lands
Command Tower
100%inclusion4 decks4 decks
15%synergy
Misty Rainforest
100%inclusion4 decks4 decks
69%synergy
Rejuvenating Springs
100%inclusion4 decks4 decks
56%synergy
Prismatic Vista
75%inclusion3 decks4 decks
68%synergy
Breeding Pool
75%inclusion3 decks4 decks
29%synergy
Yavimaya Coast
75%inclusion3 decks4 decks
22%synergy
Island
75%inclusion3 decks4 decks
-20%synergy
Forest
75%inclusion3 decks4 decks
-20%synergy
Fabled Passage
50%inclusion2 decks4 decks
35%synergy
Vineglimmer Snarl
50%inclusion2 decks4 decks
12%synergy
Waterlogged Grove
50%inclusion2 decks4 decks
29%synergy
Tropical Island
50%inclusion2 decks4 decks
36%synergy
Dreamroot Cascade
50%inclusion2 decks4 decks
8%synergy
Hinterland Harbor
50%inclusion2 decks4 decks
-10%synergy
Simic Growth Chamber
25%inclusion1 decks4 decks
-23%synergy
Windswept Heath
25%inclusion1 decks4 decks
14%synergy
Barkchannel Pathway
25%inclusion1 decks4 decks
5%synergy
Snow-Covered Island
25%inclusion1 decks4 decks
18%synergy
Snow-Covered Forest
25%inclusion1 decks4 decks
18%synergy
Verdant Catacombs
25%inclusion1 decks4 decks
15%synergy
Glasspool Mimic
25%inclusion1 decks4 decks
21%synergy
Mana Confluence
25%inclusion1 decks4 decks
19%synergy
Bala Ged Recovery
25%inclusion1 decks4 decks
15%synergy
Polluted Delta
25%inclusion1 decks4 decks
14%synergy
City of Brass
25%inclusion1 decks4 decks
19%synergy
Flooded Strand
25%inclusion1 decks4 decks
14%synergy
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