Koma, Cosmos Serpent (Commander) - Aggro

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #302
25decks
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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Shared Roots
14%inclusion1 decks7 decks
11%synergy
High Synergy Cards
Parallel Lives
80%inclusion20 decks25 decks
74%synergy
Whelming Wave
84%inclusion21 decks25 decks
73%synergy
Elemental Bond
76%inclusion19 decks25 decks
70%synergy
Adrix and Nev, Twincasters
76%inclusion19 decks25 decks
68%synergy
Spark Double
76%inclusion19 decks25 decks
66%synergy
Second Harvest
60%inclusion15 decks25 decks
54%synergy
Doubling Season
60%inclusion15 decks25 decks
50%synergy
Serpent of Yawning Depths
56%inclusion14 decks25 decks
50%synergy
Junk Winder
56%inclusion14 decks25 decks
49%synergy
Sakashima of a Thousand Faces
52%inclusion13 decks25 decks
47%synergy
Top Cards
Cultivate
76%inclusion19 decks25 decks
29%synergy
Rampant Growth
72%inclusion18 decks25 decks
31%synergy
Counterspell
72%inclusion18 decks25 decks
22%synergy
Kodama's Reach
60%inclusion15 decks25 decks
24%synergy
Lightning Greaves
60%inclusion15 decks25 decks
38%synergy
Koma, World-Eater
58%inclusion11 decks19 decks
45%synergy
Kindred Discovery
56%inclusion14 decks25 decks
46%synergy
Heroic Intervention
52%inclusion13 decks25 decks
22%synergy
Murkfiend Liege
52%inclusion13 decks25 decks
37%synergy
Irenicus's Vile Duplication
52%inclusion13 decks25 decks
46%synergy
Game Changers
Seedborn Muse
44%inclusion11 decks25 decks
28%synergy
Cyclonic Rift
44%inclusion11 decks25 decks
18%synergy
Fierce Guardianship
28%inclusion7 decks25 decks
11%synergy
Worldly Tutor
28%inclusion7 decks25 decks
13%synergy
Rhystic Study
20%inclusion5 decks25 decks
-2%synergy
Mystical Tutor
20%inclusion5 decks25 decks
11%synergy
Ancient Tomb
16%inclusion4 decks25 decks
7%synergy
Consecrated Sphinx
16%inclusion4 decks25 decks
7%synergy
Force of Will
16%inclusion4 decks25 decks
6%synergy
Crop Rotation
8.0%inclusion2 decks25 decks
-5%synergy
Creatures
Aesi, Tyrant of Gyre Strait
44%inclusion11 decks25 decks
27%synergy
Birds of Paradise
44%inclusion11 decks25 decks
16%synergy
Spawning Kraken
44%inclusion11 decks25 decks
37%synergy
Summon: Leviathan
36%inclusion4 decks11 decks
29%synergy
Garruk's Packleader
36%inclusion9 decks25 decks
34%synergy
Craterhoof Behemoth
36%inclusion9 decks25 decks
26%synergy
Ohran Frostfang
36%inclusion9 decks25 decks
32%synergy
Arixmethes, Slumbering Isle
36%inclusion9 decks25 decks
23%synergy
Eternal Witness
32%inclusion8 decks25 decks
11%synergy
Elvish Mystic
32%inclusion8 decks25 decks
8%synergy
Llanowar Elves
32%inclusion8 decks25 decks
4%synergy
Archetype of Imagination
32%inclusion8 decks25 decks
28%synergy
Sakashima the Impostor
32%inclusion8 decks25 decks
29%synergy
Hullbreaker Horror
32%inclusion8 decks25 decks
14%synergy
Sakura-Tribe Elder
32%inclusion8 decks25 decks
13%synergy
Roaming Throne
28%inclusion7 decks25 decks
20%synergy
Enduring Vitality
26%inclusion5 decks19 decks
19%synergy
Slinn Voda, the Rising Deep
24%inclusion6 decks25 decks
18%synergy
Fanatic of Rhonas
24%inclusion5 decks21 decks
18%synergy
Tatyova, Benthic Druid
20%inclusion5 decks25 decks
-11%synergy
Phyrexian Metamorph
20%inclusion5 decks25 decks
11%synergy
Gala Greeters
20%inclusion5 decks25 decks
18%synergy
Guardian Augmenter
20%inclusion5 decks25 decks
19%synergy
Fyndhorn Elves
20%inclusion5 decks25 decks
4%synergy
Ouroboroid
20%inclusion2 decks10 decks
17%synergy
Starwinder
20%inclusion2 decks10 decks
13%synergy
Octomancer
19%inclusion4 decks21 decks
14%synergy
Solemn Simulacrum
16%inclusion4 decks25 decks
9%synergy
Curiosity Crafter
16%inclusion4 decks25 decks
13%synergy
Circle of Dreams Druid
16%inclusion4 decks25 decks
14%synergy
Saryth, the Viper's Fang
16%inclusion4 decks25 decks
14%synergy
Auton Soldier
16%inclusion4 decks25 decks
13%synergy
Clever Impersonator
16%inclusion4 decks25 decks
11%synergy
Reef Worm
16%inclusion4 decks25 decks
12%synergy
Enduring Curiosity
16%inclusion3 decks19 decks
13%synergy
Loot, Exuberant Explorer
16%inclusion3 decks19 decks
8%synergy
Hydroelectric Specimen
14%inclusion3 decks21 decks
8%synergy
Bloom Tender
12%inclusion3 decks25 decks
8%synergy
Troyan, Gutsy Explorer
12%inclusion3 decks25 decks
9%synergy
Coiling Oracle
12%inclusion3 decks25 decks
-1%synergy
Esix, Fractal Bloom
12%inclusion3 decks25 decks
8%synergy
Toski, Bearer of Secrets
12%inclusion3 decks25 decks
9%synergy
Geode Golem
12%inclusion3 decks25 decks
12%synergy
Tireless Provisioner
12%inclusion3 decks25 decks
-3%synergy
Glasspool Mimic
12%inclusion3 decks25 decks
8%synergy
Kona, Rescue Beastie
11%inclusion2 decks19 decks
9%synergy
Frenzied Baloth
10%inclusion1 decks10 decks
8%synergy
Disciple of Freyalise
10%inclusion2 decks21 decks
5%synergy
Canopy Gargantuan
8.3%inclusion1 decks12 decks
7%synergy
Reclamation Sage
8.0%inclusion2 decks25 decks
-6%synergy
Instants
An Offer You Can't Refuse
44%inclusion11 decks25 decks
21%synergy
Beast Within
44%inclusion11 decks25 decks
-6%synergy
Double Major
44%inclusion11 decks25 decks
36%synergy
Negate
40%inclusion10 decks25 decks
14%synergy
Return of the Wildspeaker
36%inclusion9 decks25 decks
26%synergy
Growth Spiral
36%inclusion9 decks25 decks
-9%synergy
Mana Drain
36%inclusion9 decks25 decks
20%synergy
Arcane Denial
36%inclusion9 decks25 decks
13%synergy
Rapid Hybridization
32%inclusion8 decks25 decks
6%synergy
Pongify
28%inclusion7 decks25 decks
3%synergy
Krosan Grip
24%inclusion6 decks25 decks
16%synergy
Nature's Claim
24%inclusion6 decks25 decks
14%synergy
Reality Shift
20%inclusion5 decks25 decks
5%synergy
Swan Song
20%inclusion5 decks25 decks
1%synergy
Voidslime
20%inclusion5 decks25 decks
15%synergy
Brainstorm
16%inclusion4 decks25 decks
2%synergy
Harrow
16%inclusion4 decks25 decks
4%synergy
Aetherize
16%inclusion4 decks25 decks
4%synergy
Noxious Revival
16%inclusion4 decks25 decks
10%synergy
Tamiyo's Safekeeping
16%inclusion4 decks25 decks
10%synergy
Simic Charm
16%inclusion4 decks25 decks
8%synergy
Planar Genesis
14%inclusion3 decks21 decks
3%synergy
Mizzium Skin
12%inclusion3 decks25 decks
12%synergy
Frantic Search
12%inclusion3 decks25 decks
6%synergy
Snakeskin Veil
12%inclusion3 decks25 decks
6%synergy
Plasm Capture
12%inclusion3 decks25 decks
9%synergy
Archdruid's Charm
12%inclusion3 decks25 decks
6%synergy
Mindbreak Trap
12%inclusion3 decks25 decks
7%synergy
Force of Vigor
12%inclusion3 decks25 decks
7%synergy
Entish Restoration
12%inclusion3 decks25 decks
3%synergy
Return to Nature
12%inclusion3 decks25 decks
6%synergy
Resculpt
12%inclusion3 decks25 decks
6%synergy
Disallow
12%inclusion3 decks25 decks
10%synergy
Cackling Counterpart
12%inclusion3 decks25 decks
9%synergy
Flare of Denial
10%inclusion2 decks21 decks
6%synergy
Heritage Reclamation
8.3%inclusion1 decks12 decks
6%synergy
Muddle the Mixture
8.0%inclusion2 decks25 decks
4%synergy
Stubborn Denial
8.0%inclusion2 decks25 decks
5%synergy
Complete the Circuit
8.0%inclusion2 decks25 decks
8%synergy
Repulsive Mutation
8.0%inclusion2 decks25 decks
3%synergy
Perplexing Test
8.0%inclusion2 decks25 decks
3%synergy
Flusterstorm
8.0%inclusion2 decks25 decks
1%synergy
Filter Out
8.0%inclusion2 decks25 decks
6%synergy
Rewind
8.0%inclusion2 decks25 decks
5%synergy
Naturalize
8.0%inclusion2 decks25 decks
6%synergy
Obscuring Haze
8.0%inclusion2 decks25 decks
6%synergy
Miscast
8.0%inclusion2 decks25 decks
6%synergy
Sorceries
Quantum Misalignment
40%inclusion10 decks25 decks
37%synergy
Farseek
40%inclusion10 decks25 decks
15%synergy
Triumph of the Hordes
36%inclusion9 decks25 decks
33%synergy
Nature's Lore
36%inclusion9 decks25 decks
6%synergy
Three Visits
32%inclusion8 decks25 decks
9%synergy
Skyshroud Claim
28%inclusion7 decks25 decks
19%synergy
Shamanic Revelation
24%inclusion6 decks25 decks
19%synergy
Bala Ged Recovery
24%inclusion6 decks25 decks
14%synergy
Overwhelming Stampede
24%inclusion6 decks25 decks
12%synergy
Rite of Replication
24%inclusion6 decks25 decks
17%synergy
Finale of Devastation
20%inclusion5 decks25 decks
8%synergy
Explore
20%inclusion5 decks25 decks
0%synergy
Green Sun's Zenith
16%inclusion4 decks25 decks
7%synergy
Last March of the Ents
16%inclusion4 decks25 decks
12%synergy
Migration Path
16%inclusion4 decks25 decks
13%synergy
Regrowth
16%inclusion4 decks25 decks
12%synergy
Raise the Palisade
16%inclusion4 decks25 decks
10%synergy
Rally the Galadhrim
12%inclusion3 decks25 decks
11%synergy
Search for Tomorrow
12%inclusion3 decks25 decks
7%synergy
Distant Melody
12%inclusion3 decks25 decks
9%synergy
Doppelgang
12%inclusion3 decks25 decks
5%synergy
Glimpse the Core
12%inclusion3 decks25 decks
11%synergy
Flare of Cultivation
8.7%inclusion2 decks23 decks
7%synergy
Traverse the Outlands
8.0%inclusion2 decks25 decks
4%synergy
Oversimplify
8.0%inclusion2 decks25 decks
4%synergy
Fabricate
8.0%inclusion2 decks25 decks
1%synergy
Tempt with Discovery
8.0%inclusion2 decks25 decks
4%synergy
Clone Legion
8.0%inclusion2 decks25 decks
7%synergy
Quasiduplicate
8.0%inclusion2 decks25 decks
5%synergy
River's Rebuke
8.0%inclusion2 decks25 decks
5%synergy
Ezuri's Predation
8.0%inclusion2 decks25 decks
0%synergy
Body of Research
8.0%inclusion2 decks25 decks
6%synergy
Preposterous Proportions
5.3%inclusion1 decks19 decks
4%synergy
Utility Artifacts
Helm of the Host
40%inclusion10 decks25 decks
35%synergy
Swiftfoot Boots
40%inclusion10 decks25 decks
14%synergy
Mirror Box
32%inclusion8 decks25 decks
29%synergy
Combine Chrysalis
24%inclusion6 decks25 decks
20%synergy
Monster Manual
16%inclusion4 decks25 decks
14%synergy
Eldrazi Monument
16%inclusion4 decks25 decks
15%synergy
Emerald Medallion
16%inclusion4 decks25 decks
13%synergy
Coat of Arms
12%inclusion3 decks25 decks
11%synergy
The Great Henge
12%inclusion3 decks25 decks
3%synergy
Bident of Thassa
12%inclusion3 decks25 decks
5%synergy
Sensei's Divining Top
8.0%inclusion2 decks25 decks
4%synergy
The One Ring
8.0%inclusion2 decks25 decks
0%synergy
The Immortal Sun
8.0%inclusion2 decks25 decks
8%synergy
Kaldra Compleat
8.0%inclusion2 decks25 decks
8%synergy
Idol of Oblivion
8.0%inclusion2 decks25 decks
5%synergy
Conduit of Worlds
8.0%inclusion2 decks25 decks
2%synergy
Venser's Journal
8.0%inclusion2 decks25 decks
7%synergy
Thunderous Velocipede
5.9%inclusion1 decks17 decks
5%synergy
Enchantments
Tribute to the World Tree
44%inclusion11 decks25 decks
38%synergy
Cryptolith Rite
32%inclusion8 decks25 decks
29%synergy
Primal Vigor
32%inclusion8 decks25 decks
29%synergy
Exploration
28%inclusion7 decks25 decks
15%synergy
Mystic Remora
28%inclusion7 decks25 decks
13%synergy
Beastmaster Ascension
20%inclusion5 decks25 decks
17%synergy
Garruk's Uprising
20%inclusion5 decks25 decks
4%synergy
Wilderness Reclamation
20%inclusion5 decks25 decks
11%synergy
Paradox Haze
20%inclusion5 decks25 decks
20%synergy
Growing Rites of Itlimoc
20%inclusion5 decks25 decks
14%synergy
Unnatural Growth
16%inclusion4 decks25 decks
13%synergy
Opposition
16%inclusion4 decks25 decks
16%synergy
Defense of the Heart
16%inclusion4 decks25 decks
14%synergy
Propaganda
16%inclusion4 decks25 decks
9%synergy
Simic Ascendancy
12%inclusion3 decks25 decks
-1%synergy
Sylvan Library
12%inclusion3 decks25 decks
3%synergy
Leyline of Anticipation
12%inclusion3 decks25 decks
8%synergy
Dismiss into Dream
12%inclusion3 decks25 decks
12%synergy
Death's Presence
12%inclusion3 decks25 decks
12%synergy
Unstoppable Plan
12%inclusion2 decks17 decks
10%synergy
Impostor Syndrome
11%inclusion1 decks9 decks
9%synergy
Mirror Room // Fractured Realm
11%inclusion2 decks19 decks
9%synergy
Terrasymbiosis
10%inclusion1 decks10 decks
5%synergy
Loading Zone
10%inclusion1 decks10 decks
8%synergy
Moonlit Meditation
10%inclusion1 decks10 decks
9%synergy
Utopia Sprawl
8.0%inclusion2 decks25 decks
1%synergy
Verity Circle
8.0%inclusion2 decks25 decks
7%synergy
Primal Empathy
8.0%inclusion2 decks25 decks
6%synergy
Imprisoned in the Moon
8.0%inclusion2 decks25 decks
4%synergy
Wizard Class
8.0%inclusion2 decks25 decks
3%synergy
Extravagant Replication
8.0%inclusion2 decks25 decks
6%synergy
Quest for Ula's Temple
8.0%inclusion2 decks25 decks
5%synergy
Elven Chorus
8.0%inclusion2 decks25 decks
5%synergy
Ominous Seas
8.0%inclusion2 decks25 decks
4%synergy
Vesuvan Duplimancy
8.0%inclusion2 decks25 decks
6%synergy
Followed Footsteps
8.0%inclusion2 decks25 decks
7%synergy
Glorious Sunrise
8.0%inclusion2 decks25 decks
7%synergy
Burgeoning
8.0%inclusion2 decks25 decks
1%synergy
Eaten by Piranhas
8.0%inclusion2 decks25 decks
6%synergy
Court of Bounty
8.0%inclusion2 decks25 decks
7%synergy
Overgrowth
8.0%inclusion2 decks25 decks
7%synergy
Shielding Plax
8.0%inclusion2 decks25 decks
6%synergy
March of the World Ooze
5.9%inclusion1 decks17 decks
5%synergy
Battles
Invasion of Segovia
8.0%inclusion2 decks25 decks
7%synergy
Invasion of Arcavios
8.0%inclusion2 decks25 decks
8%synergy
Planeswalkers
Oko, Thief of Crowns
28%inclusion7 decks25 decks
21%synergy
Jace, Wielder of Mysteries
8.0%inclusion2 decks25 decks
3%synergy
Vivien Reid
8.0%inclusion2 decks25 decks
6%synergy
Kaito, Cunning Infiltrator
5.3%inclusion1 decks19 decks
5%synergy
Utility Lands
Reliquary Tower
68%inclusion17 decks25 decks
18%synergy
Evendo, Waking Haven
50%inclusion5 decks10 decks
45%synergy
Command Beacon
36%inclusion9 decks25 decks
32%synergy
Boseiju, Who Endures
32%inclusion8 decks25 decks
10%synergy
Otawara, Soaring City
32%inclusion8 decks25 decks
13%synergy
Mistrise Village
31%inclusion4 decks13 decks
20%synergy
Yavimaya, Cradle of Growth
24%inclusion6 decks25 decks
2%synergy
Temple of the False God
24%inclusion6 decks25 decks
8%synergy
Three Tree City
24%inclusion5 decks21 decks
19%synergy
Mystic Sanctuary
20%inclusion5 decks25 decks
8%synergy
Rogue's Passage
20%inclusion5 decks25 decks
-2%synergy
Alchemist's Refuge
16%inclusion4 decks25 decks
-1%synergy
Urza's Saga
12%inclusion3 decks25 decks
6%synergy
Mosswort Bridge
12%inclusion3 decks25 decks
-5%synergy
Arcane Lighthouse
8.0%inclusion2 decks25 decks
7%synergy
Scavenger Grounds
8.0%inclusion2 decks25 decks
4%synergy
Emergence Zone
8.0%inclusion2 decks25 decks
4%synergy
Gaea's Cradle
8.0%inclusion2 decks25 decks
1%synergy
Cascading Cataracts
8.0%inclusion2 decks25 decks
7%synergy
Mana Artifacts
Sol Ring
96%inclusion24 decks25 decks
15%synergy
Arcane Signet
76%inclusion19 decks25 decks
13%synergy
Thought Vessel
44%inclusion11 decks25 decks
24%synergy
Simic Signet
36%inclusion9 decks25 decks
4%synergy
Talisman of Curiosity
32%inclusion8 decks25 decks
10%synergy
Decanter of Endless Water
20%inclusion5 decks25 decks
15%synergy
Chromatic Lantern
16%inclusion4 decks25 decks
14%synergy
Fellwar Stone
16%inclusion4 decks25 decks
6%synergy
Jeweled Lotus
12%inclusion3 decks25 decks
10%synergy
Herd Heirloom
8.3%inclusion1 decks12 decks
6%synergy
Moss Diamond
8.0%inclusion2 decks25 decks
7%synergy
Mana Vault
8.0%inclusion2 decks25 decks
2%synergy
Mox Opal
8.0%inclusion2 decks25 decks
3%synergy
Skyclave Relic
8.0%inclusion2 decks25 decks
7%synergy
Lands
Command Tower
92%inclusion23 decks25 decks
7%synergy
Island
92%inclusion23 decks25 decks
-3%synergy
Forest
92%inclusion23 decks25 decks
-3%synergy
Hinterland Harbor
80%inclusion20 decks25 decks
21%synergy
Breeding Pool
64%inclusion16 decks25 decks
18%synergy
Rejuvenating Springs
64%inclusion16 decks25 decks
20%synergy
Yavimaya Coast
60%inclusion15 decks25 decks
8%synergy
Dreamroot Cascade
52%inclusion13 decks25 decks
10%synergy
Misty Rainforest
40%inclusion10 decks25 decks
9%synergy
Flooded Grove
40%inclusion10 decks25 decks
-1%synergy
Simic Growth Chamber
36%inclusion9 decks25 decks
-12%synergy
Myriad Landscape
36%inclusion9 decks25 decks
14%synergy
Waterlogged Grove
36%inclusion9 decks25 decks
15%synergy
Temple of Mystery
36%inclusion9 decks25 decks
-2%synergy
Fabled Passage
28%inclusion7 decks25 decks
14%synergy
Exotic Orchard
28%inclusion7 decks25 decks
4%synergy
Vineglimmer Snarl
28%inclusion7 decks25 decks
-11%synergy
Evolving Wilds
28%inclusion7 decks25 decks
3%synergy
Barkchannel Pathway
24%inclusion6 decks25 decks
4%synergy
Bala Ged Recovery
24%inclusion6 decks25 decks
14%synergy
Overflowing Basin
22%inclusion5 decks23 decks
2%synergy
Tangled Islet
20%inclusion5 decks25 decks
4%synergy
Prismatic Vista
16%inclusion4 decks25 decks
9%synergy
Terramorphic Expanse
16%inclusion4 decks25 decks
-4%synergy
Littjara Mirrorlake
16%inclusion4 decks25 decks
12%synergy
Tropical Island
16%inclusion4 decks25 decks
2%synergy
Rimewood Falls
16%inclusion4 decks25 decks
7%synergy
Path of Ancestry
16%inclusion4 decks25 decks
-1%synergy
Hedge Maze
16%inclusion4 decks25 decks
-4%synergy
Hydroelectric Specimen
14%inclusion3 decks21 decks
8%synergy
Tanglepool Bridge
12%inclusion3 decks25 decks
7%synergy
Glasspool Mimic
12%inclusion3 decks25 decks
8%synergy
Mana Confluence
12%inclusion3 decks25 decks
6%synergy
Willowrush Verge
12%inclusion2 decks17 decks
-5%synergy
Disciple of Freyalise
10%inclusion2 decks21 decks
5%synergy
Escape Tunnel
8.0%inclusion2 decks25 decks
5%synergy
Blighted Woodland
8.0%inclusion2 decks25 decks
1%synergy
Windswept Heath
8.0%inclusion2 decks25 decks
-2%synergy
Snow-Covered Island
8.0%inclusion2 decks25 decks
1%synergy
Snow-Covered Forest
8.0%inclusion2 decks25 decks
1%synergy
Wooded Foothills
8.0%inclusion2 decks25 decks
-2%synergy
Reflecting Pool
8.0%inclusion2 decks25 decks
5%synergy
Botanical Sanctum
8.0%inclusion2 decks25 decks
-5%synergy
Gemstone Caverns
8.0%inclusion2 decks25 decks
2%synergy
Simic Guildgate
8.0%inclusion2 decks25 decks
-2%synergy
City of Brass
8.0%inclusion2 decks25 decks
2%synergy
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