The Monstrous Serpent (Commander) - Upgraded

Original Name:

Koma, Cosmos SerpentKoma, Cosmos Serpent

The Monstrous Serpent
Rank #306
382decks
As CommanderAs CardAverage DeckDecks
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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 Unagi of Kyoshi Island
18%inclusion24 decks131 decks
13%synergy
Sodden Verdure
14%inclusion3 decks22 decks
11%synergy
Shared Roots
8.7%inclusion11 decks126 decks
5%synergy
Ember Island Production
5.7%inclusion7 decks123 decks
5%synergy
Badgermole Cub
5.1%inclusion7 decks136 decks
0%synergy
High Synergy Cards
Adrix and Nev, Twincasters
76%inclusion291 decks382 decks
68%synergy
Whelming Wave
76%inclusion291 decks382 decks
65%synergy
Elemental Bond
68%inclusion259 decks382 decks
62%synergy
Spark Double
66%inclusion251 decks382 decks
56%synergy
Koma, World-Eater
64%inclusion244 decks379 decks
51%synergy
Junk Winder
56%inclusion213 decks382 decks
49%synergy
Parallel Lives
55%inclusion210 decks382 decks
49%synergy
Serpent of Yawning Depths
54%inclusion208 decks382 decks
48%synergy
Irenicus's Vile Duplication
49%inclusion189 decks382 decks
43%synergy
Sakashima of a Thousand Faces
47%inclusion181 decks382 decks
42%synergy
Top Cards
Cultivate
75%inclusion285 decks382 decks
28%synergy
Counterspell
74%inclusion282 decks382 decks
24%synergy
Rampant Growth
70%inclusion267 decks382 decks
29%synergy
Kodama's Reach
68%inclusion259 decks382 decks
32%synergy
Beast Within
59%inclusion226 decks382 decks
9%synergy
Nature's Lore
57%inclusion219 decks382 decks
27%synergy
Farseek
55%inclusion211 decks382 decks
30%synergy
Heroic Intervention
53%inclusion201 decks382 decks
22%synergy
Growth Spiral
53%inclusion201 decks382 decks
8%synergy
Aesi, Tyrant of Gyre Strait
53%inclusion201 decks382 decks
35%synergy
Game Changers
Cyclonic Rift
38%inclusion144 decks382 decks
12%synergy
Rhystic Study
31%inclusion117 decks382 decks
9%synergy
Seedborn Muse
24%inclusion91 decks382 decks
8%synergy
Fierce Guardianship
23%inclusion89 decks382 decks
6%synergy
Worldly Tutor
17%inclusion64 decks382 decks
1%synergy
Consecrated Sphinx
16%inclusion62 decks382 decks
7%synergy
Gaea's Cradle
6.0%inclusion23 decks382 decks
-1%synergy
Force of Will
6.0%inclusion23 decks382 decks
-4%synergy
Ancient Tomb
5.2%inclusion20 decks382 decks
-4%synergy
Creatures
Llanowar Elves
47%inclusion181 decks382 decks
19%synergy
Spawning Kraken
45%inclusion171 decks382 decks
37%synergy
Arixmethes, Slumbering Isle
45%inclusion170 decks382 decks
31%synergy
Birds of Paradise
41%inclusion158 decks382 decks
14%synergy
Sakura-Tribe Elder
40%inclusion154 decks382 decks
21%synergy
Craterhoof Behemoth
38%inclusion144 decks382 decks
28%synergy
Sakashima the Impostor
37%inclusion142 decks382 decks
35%synergy
Tatyova, Benthic Druid
37%inclusion141 decks382 decks
6%synergy
Elvish Mystic
35%inclusion134 decks382 decks
11%synergy
Murkfiend Liege
32%inclusion122 decks382 decks
17%synergy
Garruk's Packleader
31%inclusion118 decks382 decks
29%synergy
Hullbreaker Horror
29%inclusion111 decks382 decks
11%synergy
Summon: Leviathan
29%inclusion84 decks291 decks
22%synergy
Ohran Frostfang
27%inclusion105 decks382 decks
24%synergy
Eternal Witness
27%inclusion103 decks382 decks
6%synergy
Roaming Throne
23%inclusion89 decks382 decks
15%synergy
Fyndhorn Elves
23%inclusion88 decks382 decks
7%synergy
Archetype of Imagination
23%inclusion87 decks382 decks
18%synergy
Enduring Vitality
22%inclusion85 decks379 decks
15%synergy
Fanatic of Rhonas
20%inclusion77 decks382 decks
14%synergy
Octomancer
20%inclusion76 decks381 decks
15%synergy
Coiling Oracle
20%inclusion75 decks382 decks
6%synergy
Slinn Voda, the Rising Deep
19%inclusion74 decks382 decks
13%synergy
Esix, Fractal Bloom
19%inclusion72 decks382 decks
15%synergy
Chameleon, Master of Disguise
17%inclusion32 decks191 decks
14%synergy
Starwinder
15%inclusion36 decks235 decks
9%synergy
Scourge of Fleets
15%inclusion58 decks382 decks
7%synergy
Reclamation Sage
14%inclusion53 decks382 decks
0%synergy
Saryth, the Viper's Fang
13%inclusion50 decks382 decks
11%synergy
Scute Swarm
13%inclusion49 decks382 decks
-8%synergy
Enduring Curiosity
12%inclusion47 decks380 decks
9%synergy
Curiosity Crafter
12%inclusion47 decks382 decks
9%synergy
Nadir Kraken
12%inclusion46 decks382 decks
8%synergy
Uro, Titan of Nature's Wrath
12%inclusion45 decks382 decks
2%synergy
Glasspool Mimic
12%inclusion44 decks382 decks
7%synergy
Avenger of Zendikar
11%inclusion42 decks382 decks
-7%synergy
Xolatoyac, the Smiling Flood
11%inclusion42 decks382 decks
4%synergy
Circle of Dreams Druid
11%inclusion41 decks382 decks
8%synergy
Stormtide Leviathan
10%inclusion40 decks382 decks
5%synergy
Tireless Provisioner
10%inclusion38 decks382 decks
-5%synergy
Toski, Bearer of Secrets
10%inclusion38 decks382 decks
7%synergy
Azusa, Lost but Seeking
10%inclusion37 decks382 decks
-4%synergy
Nezahal, Primal Tide
10%inclusion37 decks382 decks
-1%synergy
Delighted Halfling
10%inclusion37 decks382 decks
-2%synergy
Rampaging Baloths
9.4%inclusion36 decks382 decks
-7%synergy
Phyrexian Metamorph
9.4%inclusion36 decks382 decks
0%synergy
Clever Impersonator
9.2%inclusion35 decks382 decks
4%synergy
Lotus Cobra
9.2%inclusion35 decks382 decks
-5%synergy
Auton Soldier
8.6%inclusion33 decks382 decks
6%synergy
Progenitor Mimic
7.6%inclusion29 decks382 decks
3%synergy
Instants
Negate
41%inclusion156 decks382 decks
15%synergy
Double Major
40%inclusion154 decks382 decks
32%synergy
An Offer You Can't Refuse
38%inclusion146 decks382 decks
15%synergy
Pongify
38%inclusion144 decks382 decks
13%synergy
Arcane Denial
36%inclusion137 decks382 decks
13%synergy
Second Harvest
35%inclusion134 decks382 decks
29%synergy
Return of the Wildspeaker
33%inclusion126 decks382 decks
23%synergy
Mana Drain
32%inclusion124 decks382 decks
17%synergy
Rapid Hybridization
32%inclusion123 decks382 decks
6%synergy
Swan Song
27%inclusion103 decks382 decks
8%synergy
Reality Shift
23%inclusion86 decks382 decks
8%synergy
Krosan Grip
19%inclusion74 decks382 decks
12%synergy
Simic Charm
19%inclusion72 decks382 decks
11%synergy
Nature's Claim
16%inclusion63 decks382 decks
7%synergy
Voidslime
16%inclusion60 decks382 decks
11%synergy
Brainstorm
15%inclusion57 decks382 decks
1%synergy
Harrow
15%inclusion56 decks382 decks
3%synergy
Planar Genesis
15%inclusion56 decks382 decks
4%synergy
Plasm Capture
14%inclusion55 decks382 decks
11%synergy
Sink into Stupor
14%inclusion55 decks382 decks
3%synergy
Tamiyo's Safekeeping
14%inclusion54 decks382 decks
8%synergy
Snakeskin Veil
13%inclusion50 decks382 decks
7%synergy
Stubborn Denial
13%inclusion48 decks382 decks
10%synergy
Aetherize
12%inclusion47 decks382 decks
0%synergy
Return to Nature
12%inclusion45 decks382 decks
6%synergy
Eureka Moment
10%inclusion37 decks382 decks
-1%synergy
Entish Restoration
10%inclusion37 decks382 decks
0%synergy
Tyvar's Stand
9.4%inclusion36 decks382 decks
7%synergy
Mystic Reflection
9.2%inclusion35 decks382 decks
7%synergy
Disallow
9.2%inclusion35 decks382 decks
7%synergy
Collective Resistance
9.2%inclusion35 decks382 decks
6%synergy
Perplexing Test
8.9%inclusion34 decks382 decks
4%synergy
Archdruid's Charm
8.6%inclusion33 decks382 decks
2%synergy
Chord of Calling
8.6%inclusion33 decks382 decks
1%synergy
Force of Negation
8.4%inclusion32 decks382 decks
0%synergy
Resculpt
8.1%inclusion31 decks382 decks
2%synergy
Slip Out the Back
8.1%inclusion31 decks382 decks
4%synergy
Decisive Denial
7.9%inclusion30 decks382 decks
3%synergy
Auroral Procession
7.6%inclusion25 decks331 decks
4%synergy
Sublime Epiphany
7.3%inclusion28 decks382 decks
5%synergy
Fog
6.8%inclusion26 decks382 decks
3%synergy
Pact of Negation
6.5%inclusion25 decks382 decks
-1%synergy
Lazotep Plating
6.5%inclusion25 decks382 decks
6%synergy
Noxious Revival
6.3%inclusion24 decks382 decks
0%synergy
Refute
5.5%inclusion21 decks379 decks
3%synergy
Three Steps Ahead
5.2%inclusion20 decks382 decks
2%synergy
Force of Vigor
5.2%inclusion20 decks382 decks
1%synergy
Cackling Counterpart
5.2%inclusion20 decks382 decks
2%synergy
Sorceries
Three Visits
49%inclusion188 decks382 decks
26%synergy
Skyshroud Claim
37%inclusion141 decks382 decks
28%synergy
Overwhelming Stampede
27%inclusion103 decks382 decks
15%synergy
Quantum Misalignment
26%inclusion101 decks382 decks
24%synergy
Explore
24%inclusion91 decks382 decks
4%synergy
Migration Path
17%inclusion64 decks382 decks
13%synergy
Rite of Replication
15%inclusion58 decks382 decks
8%synergy
Shamanic Revelation
13%inclusion51 decks382 decks
8%synergy
Urban Evolution
13%inclusion49 decks382 decks
3%synergy
Rishkar's Expertise
13%inclusion48 decks382 decks
4%synergy
Bala Ged Recovery
12%inclusion47 decks382 decks
2%synergy
Ponder
11%inclusion43 decks382 decks
4%synergy
Triumph of the Hordes
11%inclusion42 decks382 decks
8%synergy
Explosive Vegetation
11%inclusion42 decks382 decks
5%synergy
Harmonize
11%inclusion41 decks382 decks
5%synergy
Finale of Devastation
10%inclusion39 decks382 decks
-2%synergy
Sea Gate Restoration
10%inclusion38 decks382 decks
5%synergy
Preordain
8.9%inclusion34 decks382 decks
1%synergy
Distant Melody
8.9%inclusion34 decks382 decks
6%synergy
Curse of the Swine
8.6%inclusion33 decks382 decks
-2%synergy
Search for Tomorrow
7.9%inclusion30 decks382 decks
3%synergy
Windfall
7.6%inclusion29 decks382 decks
4%synergy
Regrowth
7.6%inclusion29 decks382 decks
4%synergy
Into the North
6.3%inclusion24 decks382 decks
5%synergy
Overrun
6.3%inclusion24 decks382 decks
4%synergy
Raise the Palisade
6.0%inclusion23 decks382 decks
0%synergy
Bridgeworks Battle
6.0%inclusion23 decks382 decks
1%synergy
Tempt with Discovery
5.8%inclusion22 decks382 decks
2%synergy
Ezuri's Predation
5.8%inclusion22 decks382 decks
-2%synergy
Green Sun's Zenith
5.5%inclusion21 decks382 decks
-3%synergy
Circuitous Route
5.2%inclusion20 decks382 decks
3%synergy
Flare of Cultivation
5.2%inclusion20 decks382 decks
3%synergy
Preposterous Proportions
5.0%inclusion19 decks379 decks
4%synergy
Utility Artifacts
Lightning Greaves
43%inclusion163 decks382 decks
21%synergy
Helm of the Host
39%inclusion149 decks382 decks
34%synergy
Swiftfoot Boots
37%inclusion141 decks382 decks
11%synergy
Combine Chrysalis
26%inclusion98 decks382 decks
21%synergy
Mirror Box
17%inclusion66 decks382 decks
14%synergy
Emerald Medallion
14%inclusion55 decks382 decks
11%synergy
Eldrazi Monument
10%inclusion38 decks382 decks
9%synergy
Bident of Thassa
10%inclusion38 decks382 decks
3%synergy
Sapphire Medallion
10%inclusion37 decks382 decks
6%synergy
Idol of Oblivion
9.2%inclusion35 decks382 decks
6%synergy
The Great Henge
8.9%inclusion34 decks382 decks
0%synergy
Coat of Arms
7.1%inclusion27 decks382 decks
6%synergy
Banner of Kinship
5.0%inclusion19 decks379 decks
3%synergy
Enchantments
Doubling Season
51%inclusion195 decks382 decks
41%synergy
Tribute to the World Tree
45%inclusion173 decks382 decks
39%synergy
Kindred Discovery
32%inclusion124 decks382 decks
23%synergy
Mystic Remora
26%inclusion100 decks382 decks
11%synergy
Primal Vigor
20%inclusion78 decks382 decks
17%synergy
Cryptolith Rite
19%inclusion71 decks382 decks
15%synergy
Growing Rites of Itlimoc
18%inclusion70 decks382 decks
12%synergy
Garruk's Uprising
17%inclusion65 decks382 decks
0%synergy
Wild Growth
15%inclusion56 decks382 decks
6%synergy
Paradox Haze
14%inclusion54 decks382 decks
14%synergy
Beastmaster Ascension
13%inclusion50 decks382 decks
10%synergy
Utopia Sprawl
13%inclusion49 decks382 decks
6%synergy
Exploration
13%inclusion48 decks382 decks
-1%synergy
Propaganda
12%inclusion45 decks382 decks
5%synergy
Defense of the Heart
11%inclusion42 decks382 decks
9%synergy
Extravagant Replication
11%inclusion41 decks382 decks
8%synergy
Imprisoned in the Moon
11%inclusion41 decks382 decks
7%synergy
Wilderness Reclamation
10%inclusion40 decks382 decks
2%synergy
Sylvan Library
10%inclusion39 decks382 decks
1%synergy
Unnatural Growth
10%inclusion38 decks382 decks
6%synergy
Moonlit Meditation
8.5%inclusion20 decks235 decks
7%synergy
Kenrith's Transformation
7.6%inclusion29 decks382 decks
3%synergy
Impostor Syndrome
7.3%inclusion14 decks191 decks
5%synergy
Asceticism
6.8%inclusion26 decks382 decks
3%synergy
Ominous Seas
6.3%inclusion24 decks382 decks
2%synergy
Burgeoning
6.3%inclusion24 decks382 decks
-1%synergy
Verity Circle
5.8%inclusion22 decks382 decks
5%synergy
Dismiss into Dream
5.8%inclusion22 decks382 decks
5%synergy
Opposition
5.8%inclusion22 decks382 decks
5%synergy
Planeswalkers
Oko, Thief of Crowns
21%inclusion79 decks382 decks
14%synergy
Kiora, the Crashing Wave
7.1%inclusion27 decks382 decks
4%synergy
Utility Lands
Reliquary Tower
62%inclusion235 decks382 decks
12%synergy
Yavimaya, Cradle of Growth
22%inclusion83 decks382 decks
0%synergy
Temple of the False God
21%inclusion82 decks382 decks
6%synergy
Boseiju, Who Endures
20%inclusion78 decks382 decks
-2%synergy
Mosswort Bridge
19%inclusion73 decks382 decks
2%synergy
Command Beacon
18%inclusion68 decks382 decks
14%synergy
Otawara, Soaring City
18%inclusion68 decks382 decks
-1%synergy
Alchemist's Refuge
17%inclusion66 decks382 decks
0%synergy
Mistrise Village
17%inclusion55 decks331 decks
6%synergy
Mystic Sanctuary
16%inclusion62 decks382 decks
4%synergy
Rogue's Passage
16%inclusion60 decks382 decks
-6%synergy
Castle Garenbrig
14%inclusion54 decks382 decks
10%synergy
Three Tree City
12%inclusion46 decks381 decks
7%synergy
Evendo, Waking Haven
10%inclusion24 decks237 decks
5%synergy
Castle Vantress
8.1%inclusion31 decks382 decks
1%synergy
Lumbering Falls
6.5%inclusion25 decks382 decks
0%synergy
Restless Vinestalk
6.3%inclusion24 decks382 decks
1%synergy
Scavenger Grounds
5.2%inclusion20 decks382 decks
1%synergy
Mana Artifacts
Sol Ring
93%inclusion354 decks382 decks
12%synergy
Arcane Signet
75%inclusion288 decks382 decks
12%synergy
Simic Signet
37%inclusion143 decks382 decks
6%synergy
Thought Vessel
36%inclusion139 decks382 decks
16%synergy
Talisman of Curiosity
30%inclusion114 decks382 decks
8%synergy
Fellwar Stone
13%inclusion50 decks382 decks
3%synergy
Commander's Sphere
10%inclusion38 decks382 decks
2%synergy
Thran Dynamo
6.5%inclusion25 decks382 decks
4%synergy
Mind Stone
6.5%inclusion25 decks382 decks
2%synergy
Decanter of Endless Water
6.3%inclusion24 decks382 decks
1%synergy
Lands
Island
94%inclusion359 decks382 decks
-1%synergy
Forest
93%inclusion356 decks382 decks
-2%synergy
Command Tower
91%inclusion347 decks382 decks
6%synergy
Hinterland Harbor
65%inclusion250 decks382 decks
6%synergy
Breeding Pool
58%inclusion223 decks382 decks
12%synergy
Yavimaya Coast
58%inclusion220 decks382 decks
5%synergy
Rejuvenating Springs
55%inclusion211 decks382 decks
11%synergy
Flooded Grove
50%inclusion191 decks382 decks
9%synergy
Simic Growth Chamber
49%inclusion188 decks382 decks
1%synergy
Dreamroot Cascade
47%inclusion181 decks382 decks
5%synergy
Misty Rainforest
41%inclusion157 decks382 decks
10%synergy
Temple of Mystery
37%inclusion142 decks382 decks
-1%synergy
Vineglimmer Snarl
37%inclusion142 decks382 decks
-1%synergy
Barkchannel Pathway
34%inclusion130 decks382 decks
14%synergy
Waterlogged Grove
28%inclusion106 decks382 decks
7%synergy
Exotic Orchard
26%inclusion99 decks382 decks
2%synergy
Evolving Wilds
26%inclusion99 decks382 decks
1%synergy
Hedge Maze
24%inclusion93 decks382 decks
5%synergy
Myriad Landscape
22%inclusion85 decks382 decks
0%synergy
Thornwood Falls
21%inclusion82 decks382 decks
4%synergy
Willowrush Verge
21%inclusion80 decks373 decks
5%synergy
Tangled Islet
20%inclusion78 decks382 decks
4%synergy
Rimewood Falls
19%inclusion73 decks382 decks
10%synergy
Terramorphic Expanse
18%inclusion68 decks382 decks
-2%synergy
Botanical Sanctum
17%inclusion64 decks382 decks
4%synergy
Overflowing Basin
16%inclusion63 decks382 decks
-3%synergy
Fabled Passage
15%inclusion59 decks382 decks
1%synergy
Tropical Island
14%inclusion55 decks382 decks
0%synergy
Sink into Stupor
14%inclusion55 decks382 decks
3%synergy
Snow-Covered Forest
13%inclusion51 decks382 decks
7%synergy
Snow-Covered Island
13%inclusion51 decks382 decks
7%synergy
Path of Ancestry
13%inclusion51 decks382 decks
-4%synergy
Bala Ged Recovery
12%inclusion47 decks382 decks
2%synergy
Glasspool Mimic
12%inclusion44 decks382 decks
7%synergy
Simic Guildgate
11%inclusion41 decks382 decks
1%synergy
Sea Gate Restoration
10%inclusion38 decks382 decks
5%synergy
Blighted Woodland
8.1%inclusion31 decks382 decks
1%synergy
Littjara Mirrorlake
8.1%inclusion31 decks382 decks
4%synergy
Prismatic Vista
7.6%inclusion29 decks382 decks
0%synergy
Windswept Heath
7.6%inclusion29 decks382 decks
-3%synergy
Flooded Strand
7.6%inclusion29 decks382 decks
-4%synergy
Polluted Delta
7.1%inclusion27 decks382 decks
-3%synergy
Scalding Tarn
7.1%inclusion27 decks382 decks
-3%synergy
Verdant Catacombs
6.8%inclusion26 decks382 decks
-3%synergy
Quandrix Campus
6.5%inclusion25 decks382 decks
0%synergy
Wooded Foothills
6.3%inclusion24 decks382 decks
-3%synergy
Bridgeworks Battle
6.0%inclusion23 decks382 decks
1%synergy
Woodland Stream
6.0%inclusion23 decks382 decks
1%synergy
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