Koma, Cosmos Serpent (Commander) - Budget Optimized Control

Alternate Names:

The Monstrous SerpentThe Monstrous Serpent

Koma, Cosmos Serpent
Rank #307
3decks
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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Back to Top
Rhystic Study
67%inclusion2 decks3 decks
45%synergy
Narset, Parter of Veils
33%inclusion1 decks3 decks
32%synergy
Fierce Guardianship
33%inclusion1 decks3 decks
16%synergy
Cyclonic Rift
33%inclusion1 decks3 decks
8%synergy
Worldly Tutor
33%inclusion1 decks3 decks
18%synergy
Mystical Tutor
33%inclusion1 decks3 decks
24%synergy
Creatures
Tatyova, Benthic Druid
67%inclusion2 decks3 decks
36%synergy
Serpent of Yawning Depths
67%inclusion2 decks3 decks
60%synergy
Maraleaf Pixie
33%inclusion1 decks3 decks
28%synergy
Rashmi, Eternities Crafter
33%inclusion1 decks3 decks
30%synergy
Reclamation Sage
33%inclusion1 decks3 decks
19%synergy
Collector Ouphe
33%inclusion1 decks3 decks
32%synergy
Adrix and Nev, Twincasters
33%inclusion1 decks3 decks
25%synergy
Stormtide Leviathan
33%inclusion1 decks3 decks
28%synergy
Koma, World-Eater
33%inclusion1 decks3 decks
20%synergy
Acidic Slime
33%inclusion1 decks3 decks
28%synergy
Sludge Monster
33%inclusion1 decks3 decks
33%synergy
Rampaging Baloths
33%inclusion1 decks3 decks
16%synergy
Eternal Witness
33%inclusion1 decks3 decks
12%synergy
Gandalf, Westward Voyager
33%inclusion1 decks3 decks
32%synergy
Kenessos, Priest of Thassa
33%inclusion1 decks3 decks
31%synergy
Tishana, Voice of Thunder
33%inclusion1 decks3 decks
28%synergy
Ramunap Excavator
33%inclusion1 decks3 decks
22%synergy
Scourge of Fleets
33%inclusion1 decks3 decks
25%synergy
Hydroelectric Specimen
33%inclusion1 decks3 decks
27%synergy
Junk Winder
33%inclusion1 decks3 decks
27%synergy
Trickster's Elk
33%inclusion1 decks3 decks
33%synergy
Thrashing Brontodon
33%inclusion1 decks3 decks
33%synergy
Murkfiend Liege
33%inclusion1 decks3 decks
19%synergy
Aesi, Tyrant of Gyre Strait
33%inclusion1 decks3 decks
16%synergy
Hakbal of the Surging Soul
33%inclusion1 decks3 decks
29%synergy
Llanowar Elves
33%inclusion1 decks3 decks
5%synergy
Arasta of the Endless Web
33%inclusion1 decks3 decks
32%synergy
Azusa, Lost but Seeking
33%inclusion1 decks3 decks
19%synergy
Verdant Sun's Avatar
33%inclusion1 decks3 decks
32%synergy
Haywire Mite
33%inclusion1 decks3 decks
31%synergy
Nimble Obstructionist
33%inclusion1 decks3 decks
33%synergy
Slinn Voda, the Rising Deep
33%inclusion1 decks3 decks
27%synergy
Harbinger of the Seas
33%inclusion1 decks3 decks
30%synergy
Colossal Skyturtle
33%inclusion1 decks3 decks
28%synergy
Fathom Mage
33%inclusion1 decks3 decks
26%synergy
Kiora, Sovereign of the Deep
33%inclusion1 decks3 decks
31%synergy
Esix, Fractal Bloom
33%inclusion1 decks3 decks
30%synergy
Predator Ooze
33%inclusion1 decks3 decks
33%synergy
The Watcher in the Water
33%inclusion1 decks3 decks
32%synergy
Geode Golem
33%inclusion1 decks3 decks
33%synergy
Manglehorn
33%inclusion1 decks3 decks
30%synergy
Freestrider Lookout
33%inclusion1 decks3 decks
33%synergy
Nezahal, Primal Tide
33%inclusion1 decks3 decks
22%synergy
Trygon Predator
33%inclusion1 decks3 decks
27%synergy
Arixmethes, Slumbering Isle
33%inclusion1 decks3 decks
20%synergy
Gala Greeters
33%inclusion1 decks3 decks
32%synergy
Hullbreaker Horror
33%inclusion1 decks3 decks
16%synergy
Rug of Smothering
33%inclusion1 decks3 decks
33%synergy
Sakura-Tribe Elder
33%inclusion1 decks3 decks
14%synergy
Snapping Voidcraw
33%inclusion1 decks3 decks
32%synergy
Instants
Counterspell
100%inclusion3 decks3 decks
50%synergy
Pongify
67%inclusion2 decks3 decks
42%synergy
An Offer You Can't Refuse
67%inclusion2 decks3 decks
43%synergy
Beast Within
67%inclusion2 decks3 decks
17%synergy
Strix Serenade
67%inclusion2 decks3 decks
63%synergy
Filter Out
67%inclusion2 decks3 decks
64%synergy
Arcane Denial
67%inclusion2 decks3 decks
44%synergy
Sink into Stupor
67%inclusion2 decks3 decks
55%synergy
Rapid Hybridization
33%inclusion1 decks3 decks
7%synergy
Eureka Moment
33%inclusion1 decks3 decks
22%synergy
Disdainful Stroke
33%inclusion1 decks3 decks
32%synergy
Snakeskin Veil
33%inclusion1 decks3 decks
27%synergy
Refute
33%inclusion1 decks3 decks
31%synergy
Return of the Wildspeaker
33%inclusion1 decks3 decks
23%synergy
Negate
33%inclusion1 decks3 decks
7%synergy
Growth Spiral
33%inclusion1 decks3 decks
-11%synergy
Brainstorm
33%inclusion1 decks3 decks
19%synergy
Stubborn Denial
33%inclusion1 decks3 decks
31%synergy
Archdruid's Charm
33%inclusion1 decks3 decks
27%synergy
Tyvar's Stand
33%inclusion1 decks3 decks
31%synergy
Fact or Fiction
33%inclusion1 decks3 decks
31%synergy
Brainsurge
33%inclusion1 decks3 decks
31%synergy
Mystic Reflection
33%inclusion1 decks3 decks
31%synergy
Blinding Fog
33%inclusion1 decks3 decks
33%synergy
Time Stop
33%inclusion1 decks3 decks
33%synergy
Keep Safe
33%inclusion1 decks3 decks
33%synergy
Defabricate
33%inclusion1 decks3 decks
33%synergy
Roiling Regrowth
33%inclusion1 decks3 decks
29%synergy
Peel from Reality
33%inclusion1 decks3 decks
33%synergy
Nature's Claim
33%inclusion1 decks3 decks
23%synergy
Harrow
33%inclusion1 decks3 decks
21%synergy
Reality Shift
33%inclusion1 decks3 decks
19%synergy
Opt
33%inclusion1 decks3 decks
26%synergy
Return to Nature
33%inclusion1 decks3 decks
28%synergy
Farsight Ritual
33%inclusion1 decks3 decks
33%synergy
Bane's Contingency
33%inclusion1 decks3 decks
33%synergy
Unsummon
33%inclusion1 decks3 decks
32%synergy
Blessed Respite
33%inclusion1 decks3 decks
32%synergy
Into the Flood Maw
33%inclusion1 decks3 decks
29%synergy
Swan Song
33%inclusion1 decks3 decks
14%synergy
Noxious Revival
33%inclusion1 decks3 decks
27%synergy
Delay
33%inclusion1 decks3 decks
31%synergy
Quandrix Command
33%inclusion1 decks3 decks
28%synergy
Joint Exploration
33%inclusion1 decks3 decks
28%synergy
Wash Away
33%inclusion1 decks3 decks
32%synergy
Planar Incision
33%inclusion1 decks3 decks
31%synergy
Snap
33%inclusion1 decks3 decks
29%synergy
Planar Genesis
33%inclusion1 decks3 decks
23%synergy
Rewind
33%inclusion1 decks3 decks
30%synergy
Collective Resistance
33%inclusion1 decks3 decks
30%synergy
Sorceries
Kodama's Reach
67%inclusion2 decks3 decks
31%synergy
Rampant Growth
67%inclusion2 decks3 decks
26%synergy
Cultivate
67%inclusion2 decks3 decks
20%synergy
Whelming Wave
67%inclusion2 decks3 decks
55%synergy
Quantum Misalignment
33%inclusion1 decks3 decks
30%synergy
Three Visits
33%inclusion1 decks3 decks
10%synergy
Gitaxian Probe
33%inclusion1 decks3 decks
31%synergy
Atraxa's Fall
33%inclusion1 decks3 decks
33%synergy
Consuming Tide
33%inclusion1 decks3 decks
31%synergy
Skyshroud Claim
33%inclusion1 decks3 decks
24%synergy
Farseek
33%inclusion1 decks3 decks
8%synergy
Lórien Revealed
33%inclusion1 decks3 decks
30%synergy
Nature's Lore
33%inclusion1 decks3 decks
3%synergy
Titania's Command
33%inclusion1 decks3 decks
32%synergy
Rishkar's Expertise
33%inclusion1 decks3 decks
25%synergy
Search for Tomorrow
33%inclusion1 decks3 decks
29%synergy
Irenicus's Vile Duplication
33%inclusion1 decks3 decks
27%synergy
River's Rebuke
33%inclusion1 decks3 decks
31%synergy
Bala Ged Recovery
33%inclusion1 decks3 decks
23%synergy
Migration Path
33%inclusion1 decks3 decks
30%synergy
Overwhelming Stampede
33%inclusion1 decks3 decks
21%synergy
Utility Artifacts
Swiftfoot Boots
67%inclusion2 decks3 decks
41%synergy
Giant's Amulet
33%inclusion1 decks3 decks
33%synergy
Sensei's Divining Top
33%inclusion1 decks3 decks
30%synergy
Glaring Spotlight
33%inclusion1 decks3 decks
33%synergy
Weathered Runestone
33%inclusion1 decks3 decks
33%synergy
Vexing Bauble
33%inclusion1 decks3 decks
33%synergy
Torpor Orb
33%inclusion1 decks3 decks
33%synergy
Combine Chrysalis
33%inclusion1 decks3 decks
29%synergy
Winter Moon
33%inclusion1 decks3 decks
33%synergy
Enchantments
Verity Circle
67%inclusion2 decks3 decks
66%synergy
Tribute to the World Tree
67%inclusion2 decks3 decks
60%synergy
Kenrith's Transformation
67%inclusion2 decks3 decks
62%synergy
Elemental Bond
67%inclusion2 decks3 decks
61%synergy
Doubling Season
33%inclusion1 decks3 decks
24%synergy
Back to Basics
33%inclusion1 decks3 decks
33%synergy
Counterbalance
33%inclusion1 decks3 decks
33%synergy
Spelunking
33%inclusion1 decks3 decks
28%synergy
Imprisoned in the Moon
33%inclusion1 decks3 decks
29%synergy
Unable to Scream
33%inclusion1 decks3 decks
32%synergy
Hall of Gemstone
33%inclusion1 decks3 decks
33%synergy
Utter Insignificance
33%inclusion1 decks3 decks
33%synergy
Stasis Field
33%inclusion1 decks3 decks
33%synergy
Kiora Bests the Sea God
33%inclusion1 decks3 decks
32%synergy
Mystic Remora
33%inclusion1 decks3 decks
18%synergy
Sylvan Library
33%inclusion1 decks3 decks
24%synergy
Witness Protection
33%inclusion1 decks3 decks
31%synergy
Stasis
33%inclusion1 decks3 decks
33%synergy
Kasmina's Transmutation
33%inclusion1 decks3 decks
32%synergy
Khalni Heart Expedition
33%inclusion1 decks3 decks
29%synergy
Retreat to Coralhelm
33%inclusion1 decks3 decks
24%synergy
Confounding Conundrum
33%inclusion1 decks3 decks
33%synergy
Planeswalkers
Oko, Thief of Crowns
33%inclusion1 decks3 decks
26%synergy
Utility Lands
Castle Vantress
67%inclusion2 decks3 decks
60%synergy
Mystic Sanctuary
33%inclusion1 decks3 decks
21%synergy
Alchemist's Refuge
33%inclusion1 decks3 decks
16%synergy
Mosswort Bridge
33%inclusion1 decks3 decks
16%synergy
Boseiju, Who Endures
33%inclusion1 decks3 decks
11%synergy
Reliquary Tower
33%inclusion1 decks3 decks
-16%synergy
Cephalid Coliseum
33%inclusion1 decks3 decks
29%synergy
Temple of the False God
33%inclusion1 decks3 decks
18%synergy
Rogue's Passage
33%inclusion1 decks3 decks
12%synergy
Jungle Basin
33%inclusion1 decks3 decks
31%synergy
Mana Artifacts
Arcane Signet
33%inclusion1 decks3 decks
-30%synergy
Simic Signet
33%inclusion1 decks3 decks
1%synergy
Sol Ring
33%inclusion1 decks3 decks
-47%synergy
Lands
Island
100%inclusion3 decks3 decks
5%synergy
Forest
100%inclusion3 decks3 decks
5%synergy
Hinterland Harbor
100%inclusion3 decks3 decks
40%synergy
Simic Growth Chamber
67%inclusion2 decks3 decks
19%synergy
Command Tower
67%inclusion2 decks3 decks
-19%synergy
Vineglimmer Snarl
67%inclusion2 decks3 decks
28%synergy
Yavimaya Coast
67%inclusion2 decks3 decks
14%synergy
Temple of Mystery
67%inclusion2 decks3 decks
29%synergy
Evolving Wilds
67%inclusion2 decks3 decks
42%synergy
Sink into Stupor
67%inclusion2 decks3 decks
55%synergy
Rejuvenating Springs
67%inclusion2 decks3 decks
23%synergy
Flooded Grove
67%inclusion2 decks3 decks
25%synergy
Terramorphic Expanse
33%inclusion1 decks3 decks
14%synergy
Breeding Pool
33%inclusion1 decks3 decks
-13%synergy
Myriad Landscape
33%inclusion1 decks3 decks
12%synergy
Tangled Islet
33%inclusion1 decks3 decks
17%synergy
Hydroelectric Specimen
33%inclusion1 decks3 decks
27%synergy
Barkchannel Pathway
33%inclusion1 decks3 decks
13%synergy
Waterlogged Grove
33%inclusion1 decks3 decks
13%synergy
Secluded Courtyard
33%inclusion1 decks3 decks
26%synergy
Rimewood Falls
33%inclusion1 decks3 decks
24%synergy
Hedge Maze
33%inclusion1 decks3 decks
14%synergy
Bala Ged Recovery
33%inclusion1 decks3 decks
23%synergy
Dreamroot Cascade
33%inclusion1 decks3 decks
-9%synergy
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