The Monstrous Serpent (Commander) - Core

Original Name:

Koma, Cosmos SerpentKoma, Cosmos Serpent

The Monstrous Serpent
Rank #307
593decks
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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
20%inclusion11 decks56 decks
14%synergy
Shared Roots
9.4%inclusion5 decks53 decks
6%synergy
Meditation Pools
5.8%inclusion3 decks52 decks
5%synergy
Ember Island Production
3.8%inclusion2 decks52 decks
3%synergy
Octopus Form
3.6%inclusion2 decks56 decks
3%synergy
High Synergy Cards
Whelming Wave
74%inclusion438 decks593 decks
63%synergy
Adrix and Nev, Twincasters
64%inclusion379 decks593 decks
55%synergy
Junk Winder
62%inclusion365 decks593 decks
55%synergy
Elemental Bond
55%inclusion328 decks593 decks
50%synergy
Koma, World-Eater
62%inclusion246 decks395 decks
49%synergy
Irenicus's Vile Duplication
48%inclusion282 decks593 decks
41%synergy
Serpent of Yawning Depths
43%inclusion255 decks593 decks
37%synergy
Garruk's Packleader
38%inclusion227 decks593 decks
36%synergy
Kodama's Reach
72%inclusion424 decks593 decks
36%synergy
Arixmethes, Slumbering Isle
49%inclusion289 decks593 decks
35%synergy
Top Cards
Cultivate
80%inclusion474 decks593 decks
33%synergy
Rampant Growth
72%inclusion426 decks593 decks
31%synergy
Counterspell
66%inclusion390 decks593 decks
16%synergy
Growth Spiral
66%inclusion389 decks593 decks
21%synergy
Beast Within
60%inclusion356 decks593 decks
10%synergy
Negate
55%inclusion324 decks593 decks
29%synergy
Aesi, Tyrant of Gyre Strait
48%inclusion284 decks593 decks
31%synergy
Tatyova, Benthic Druid
47%inclusion281 decks593 decks
16%synergy
Nature's Lore
46%inclusion271 decks593 decks
15%synergy
Farseek
46%inclusion270 decks593 decks
20%synergy
Game Changers
Seedborn Muse
10%inclusion61 decks593 decks
-5%synergy
Creatures
Spark Double
44%inclusion261 decks593 decks
34%synergy
Sakura-Tribe Elder
44%inclusion260 decks593 decks
24%synergy
Murkfiend Liege
43%inclusion256 decks593 decks
29%synergy
Llanowar Elves
43%inclusion254 decks593 decks
15%synergy
Spawning Kraken
40%inclusion240 decks593 decks
33%synergy
Slinn Voda, the Rising Deep
36%inclusion216 decks593 decks
30%synergy
Elvish Mystic
34%inclusion203 decks593 decks
10%synergy
Coiling Oracle
33%inclusion197 decks593 decks
20%synergy
Hullbreaker Horror
31%inclusion184 decks593 decks
13%synergy
Esix, Fractal Bloom
26%inclusion157 decks593 decks
23%synergy
Octomancer
26%inclusion130 decks500 decks
21%synergy
Eternal Witness
26%inclusion152 decks593 decks
5%synergy
Scourge of Fleets
26%inclusion152 decks593 decks
18%synergy
Archetype of Imagination
25%inclusion151 decks593 decks
21%synergy
Summon: Leviathan
24%inclusion41 decks168 decks
17%synergy
Fyndhorn Elves
24%inclusion143 decks593 decks
8%synergy
Sakashima the Impostor
24%inclusion142 decks593 decks
21%synergy
Nadir Kraken
23%inclusion139 decks593 decks
19%synergy
Sakashima of a Thousand Faces
23%inclusion137 decks593 decks
18%synergy
Ohran Frostfang
23%inclusion136 decks593 decks
19%synergy
Birds of Paradise
21%inclusion126 decks593 decks
-7%synergy
Reclamation Sage
21%inclusion125 decks593 decks
7%synergy
Xolatoyac, the Smiling Flood
19%inclusion112 decks593 decks
12%synergy
Enduring Vitality
18%inclusion85 decks467 decks
11%synergy
Rampaging Baloths
18%inclusion105 decks593 decks
1%synergy
Stormtide Leviathan
18%inclusion104 decks593 decks
12%synergy
Avenger of Zendikar
17%inclusion102 decks593 decks
-1%synergy
Nezahal, Primal Tide
17%inclusion102 decks593 decks
6%synergy
Troyan, Gutsy Explorer
16%inclusion95 decks593 decks
13%synergy
Curiosity Crafter
16%inclusion95 decks593 decks
13%synergy
Scute Swarm
16%inclusion94 decks593 decks
-5%synergy
Inga and Esika
14%inclusion82 decks593 decks
11%synergy
Kiora, Sovereign of the Deep
13%inclusion80 decks593 decks
12%synergy
Fanatic of Rhonas
13%inclusion71 decks527 decks
8%synergy
Reef Worm
13%inclusion77 decks593 decks
9%synergy
Tromokratis
13%inclusion77 decks593 decks
8%synergy
Starwinder
12%inclusion14 decks117 decks
5%synergy
Saryth, the Viper's Fang
11%inclusion68 decks593 decks
10%synergy
Toski, Bearer of Secrets
11%inclusion67 decks593 decks
8%synergy
Roaming Throne
11%inclusion67 decks593 decks
3%synergy
Progenitor Mimic
11%inclusion65 decks593 decks
6%synergy
Tireless Provisioner
11%inclusion63 decks593 decks
-5%synergy
Lotus Cobra
10%inclusion61 decks593 decks
-3%synergy
Enduring Curiosity
10%inclusion46 decks472 decks
7%synergy
Jaheira, Friend of the Forest
9.1%inclusion54 decks593 decks
5%synergy
Craterhoof Behemoth
9.1%inclusion54 decks593 decks
-1%synergy
Simic Sky Swallower
8.9%inclusion53 decks593 decks
5%synergy
Stormsurge Kraken
8.6%inclusion51 decks593 decks
4%synergy
Loot, Exuberant Explorer
8.5%inclusion33 decks389 decks
1%synergy
Shipbreaker Kraken
8.1%inclusion48 decks593 decks
5%synergy
Instants
Double Major
42%inclusion249 decks593 decks
34%synergy
Return of the Wildspeaker
36%inclusion212 decks593 decks
25%synergy
Second Harvest
35%inclusion205 decks593 decks
28%synergy
Arcane Denial
31%inclusion185 decks593 decks
9%synergy
Heroic Intervention
30%inclusion177 decks593 decks
0%synergy
Pongify
29%inclusion171 decks593 decks
4%synergy
Rapid Hybridization
28%inclusion165 decks593 decks
2%synergy
Simic Charm
28%inclusion164 decks593 decks
20%synergy
An Offer You Can't Refuse
25%inclusion148 decks593 decks
1%synergy
Krosan Grip
24%inclusion141 decks593 decks
16%synergy
Reality Shift
23%inclusion134 decks593 decks
8%synergy
Planar Genesis
21%inclusion113 decks527 decks
11%synergy
Eureka Moment
20%inclusion118 decks593 decks
9%synergy
Snakeskin Veil
19%inclusion113 decks593 decks
13%synergy
Harrow
18%inclusion106 decks593 decks
6%synergy
Return to Nature
18%inclusion106 decks593 decks
12%synergy
Brainstorm
16%inclusion97 decks593 decks
2%synergy
Aetherize
16%inclusion97 decks593 decks
4%synergy
Nature's Claim
16%inclusion94 decks593 decks
6%synergy
Tamiyo's Safekeeping
14%inclusion85 decks593 decks
9%synergy
Voidslime
13%inclusion77 decks593 decks
8%synergy
Perplexing Test
12%inclusion69 decks593 decks
7%synergy
Decisive Denial
12%inclusion69 decks593 decks
7%synergy
Plasm Capture
12%inclusion69 decks593 decks
8%synergy
Entish Restoration
11%inclusion67 decks593 decks
2%synergy
Mystic Reflection
10%inclusion57 decks593 decks
7%synergy
Swan Song
8.8%inclusion52 decks593 decks
-10%synergy
Resculpt
8.4%inclusion50 decks593 decks
2%synergy
Saw It Coming
8.3%inclusion49 decks593 decks
7%synergy
Collective Resistance
7.8%inclusion41 decks528 decks
4%synergy
Joint Exploration
7.8%inclusion46 decks593 decks
2%synergy
Stubborn Denial
7.4%inclusion44 decks593 decks
5%synergy
Disdainful Stroke
7.3%inclusion43 decks593 decks
6%synergy
Tyvar's Stand
7.1%inclusion42 decks593 decks
4%synergy
Sublime Epiphany
6.6%inclusion39 decks593 decks
5%synergy
Sink into Stupor
6.3%inclusion33 decks528 decks
-5%synergy
Cancel
6.2%inclusion37 decks593 decks
4%synergy
Fact or Fiction
6.1%inclusion36 decks593 decks
3%synergy
Archdruid's Charm
5.9%inclusion35 decks592 decks
0%synergy
Opt
5.7%inclusion34 decks593 decks
-2%synergy
Mana Drain
5.7%inclusion34 decks593 decks
-10%synergy
Roiling Regrowth
5.6%inclusion33 decks593 decks
1%synergy
Dispel
5.6%inclusion33 decks593 decks
1%synergy
Mana Leak
5.2%inclusion31 decks593 decks
3%synergy
Rewind
5.1%inclusion30 decks593 decks
2%synergy
Sorceries
Explore
38%inclusion228 decks593 decks
18%synergy
Three Visits
32%inclusion188 decks593 decks
9%synergy
Skyshroud Claim
31%inclusion185 decks593 decks
22%synergy
Overwhelming Stampede
27%inclusion161 decks593 decks
15%synergy
Urban Evolution
26%inclusion157 decks593 decks
17%synergy
Shamanic Revelation
23%inclusion138 decks593 decks
18%synergy
Migration Path
22%inclusion129 decks593 decks
18%synergy
Quantum Misalignment
20%inclusion121 decks593 decks
18%synergy
Rite of Replication
17%inclusion103 decks593 decks
10%synergy
Explosive Vegetation
16%inclusion96 decks593 decks
11%synergy
Harmonize
16%inclusion95 decks593 decks
11%synergy
Search for Tomorrow
16%inclusion95 decks593 decks
11%synergy
Rishkar's Expertise
15%inclusion89 decks593 decks
7%synergy
Curse of the Swine
13%inclusion80 decks593 decks
3%synergy
Distant Melody
13%inclusion77 decks593 decks
10%synergy
Ravenform
10%inclusion61 decks593 decks
6%synergy
Ezuri's Predation
9.4%inclusion56 decks593 decks
2%synergy
Bala Ged Recovery
8.9%inclusion53 decks593 decks
-1%synergy
Broken Bond
8.4%inclusion50 decks593 decks
4%synergy
Doppelgang
8.3%inclusion49 decks592 decks
2%synergy
Preordain
7.8%inclusion46 decks593 decks
0%synergy
Preposterous Proportions
7.7%inclusion30 decks390 decks
6%synergy
Ponder
7.4%inclusion44 decks593 decks
0%synergy
Spitting Image
6.9%inclusion41 decks593 decks
5%synergy
Overrun
6.7%inclusion40 decks593 decks
5%synergy
Triumph of the Hordes
6.4%inclusion38 decks593 decks
3%synergy
Regrowth
6.1%inclusion36 decks593 decks
2%synergy
Circuitous Route
5.7%inclusion34 decks593 decks
4%synergy
Croaking Counterpart
5.6%inclusion33 decks593 decks
1%synergy
Bridgeworks Battle
5.5%inclusion29 decks528 decks
1%synergy
Vastwood Surge
5.4%inclusion32 decks593 decks
4%synergy
Aggressive Biomancy
5.3%inclusion28 decks526 decks
0%synergy
Finale of Revelation
5.1%inclusion30 decks593 decks
0%synergy
Repudiate // Replicate
5.1%inclusion30 decks593 decks
3%synergy
Utility Artifacts
Swiftfoot Boots
44%inclusion262 decks593 decks
19%synergy
Helm of the Host
34%inclusion199 decks593 decks
28%synergy
Combine Chrysalis
33%inclusion193 decks593 decks
28%synergy
Lightning Greaves
27%inclusion162 decks593 decks
6%synergy
Idol of Oblivion
18%inclusion107 decks593 decks
15%synergy
Mirror Box
16%inclusion96 decks593 decks
13%synergy
Bident of Thassa
15%inclusion88 decks593 decks
8%synergy
Emerald Medallion
9.3%inclusion55 decks593 decks
6%synergy
Sapphire Medallion
8.3%inclusion49 decks593 decks
5%synergy
Eldrazi Monument
6.4%inclusion38 decks593 decks
6%synergy
Kefnet's Monument
5.1%inclusion30 decks593 decks
4%synergy
Enchantments
Parallel Lives
29%inclusion174 decks593 decks
23%synergy
Garruk's Uprising
28%inclusion165 decks593 decks
11%synergy
Tribute to the World Tree
27%inclusion162 decks593 decks
21%synergy
Doubling Season
26%inclusion154 decks593 decks
16%synergy
Kindred Discovery
21%inclusion124 decks593 decks
11%synergy
Wild Growth
17%inclusion99 decks593 decks
8%synergy
Beastmaster Ascension
16%inclusion97 decks593 decks
13%synergy
Primal Vigor
15%inclusion88 decks593 decks
12%synergy
Growing Rites of Itlimoc
13%inclusion80 decks593 decks
8%synergy
Utopia Sprawl
13%inclusion78 decks593 decks
7%synergy
Wilderness Reclamation
13%inclusion77 decks593 decks
4%synergy
Ominous Seas
11%inclusion68 decks593 decks
7%synergy
Unnatural Growth
11%inclusion67 decks593 decks
8%synergy
Propaganda
10%inclusion61 decks593 decks
4%synergy
Mystic Remora
10%inclusion60 decks593 decks
-5%synergy
Kenrith's Transformation
9.4%inclusion56 decks593 decks
5%synergy
Extravagant Replication
9.3%inclusion55 decks593 decks
7%synergy
Imprisoned in the Moon
8.9%inclusion53 decks593 decks
5%synergy
Khalni Heart Expedition
8.9%inclusion53 decks593 decks
5%synergy
Paradox Haze
7.9%inclusion47 decks593 decks
8%synergy
Exploration
7.8%inclusion46 decks593 decks
-5%synergy
Verity Circle
7.4%inclusion44 decks593 decks
7%synergy
Cryptolith Rite
6.9%inclusion41 decks593 decks
4%synergy
Moonlit Meditation
6.8%inclusion8 decks117 decks
5%synergy
Quest for Ula's Temple
6.1%inclusion36 decks593 decks
3%synergy
Reconnaissance Mission
5.7%inclusion34 decks593 decks
4%synergy
Impostor Syndrome
5.7%inclusion5 decks88 decks
4%synergy
Asceticism
5.4%inclusion32 decks593 decks
2%synergy
Battles
Invasion of Segovia
7.1%inclusion42 decks593 decks
6%synergy
Invasion of Zendikar
6.2%inclusion37 decks593 decks
5%synergy
Planeswalkers
Oko, Thief of Crowns
12%inclusion71 decks593 decks
5%synergy
Kiora, the Crashing Wave
10%inclusion59 decks593 decks
7%synergy
Kiora, Behemoth Beckoner
9.3%inclusion55 decks593 decks
3%synergy
Kiora, Master of the Depths
5.1%inclusion30 decks593 decks
3%synergy
Utility Lands
Reliquary Tower
51%inclusion300 decks593 decks
1%synergy
Temple of the False God
23%inclusion139 decks593 decks
8%synergy
Mosswort Bridge
20%inclusion116 decks593 decks
2%synergy
Rogue's Passage
19%inclusion115 decks593 decks
-2%synergy
Mystic Sanctuary
12%inclusion73 decks593 decks
0%synergy
Yavimaya, Cradle of Growth
9.1%inclusion54 decks593 decks
-13%synergy
Castle Garenbrig
8.8%inclusion52 decks593 decks
4%synergy
Alchemist's Refuge
8.4%inclusion50 decks593 decks
-9%synergy
Command Beacon
8.4%inclusion50 decks593 decks
4%synergy
Lumbering Falls
8.4%inclusion50 decks593 decks
2%synergy
Restless Vinestalk
7.6%inclusion45 decks593 decks
2%synergy
Three Tree City
7.3%inclusion37 decks505 decks
2%synergy
Castle Vantress
7.1%inclusion42 decks593 decks
0%synergy
Mistrise Village
6.1%inclusion13 decks213 decks
-5%synergy
Boseiju, Who Endures
6.1%inclusion36 decks593 decks
-16%synergy
Evendo, Waking Haven
5.8%inclusion7 decks120 decks
1%synergy
Otawara, Soaring City
5.1%inclusion30 decks593 decks
-14%synergy
Mana Artifacts
Sol Ring
86%inclusion511 decks593 decks
6%synergy
Arcane Signet
72%inclusion425 decks593 decks
9%synergy
Simic Signet
46%inclusion274 decks593 decks
14%synergy
Thought Vessel
34%inclusion199 decks593 decks
13%synergy
Talisman of Curiosity
29%inclusion170 decks593 decks
7%synergy
Commander's Sphere
19%inclusion110 decks593 decks
11%synergy
Fellwar Stone
12%inclusion70 decks593 decks
2%synergy
Decanter of Endless Water
8.3%inclusion49 decks593 decks
3%synergy
Mind Stone
8.3%inclusion49 decks593 decks
4%synergy
Thran Dynamo
7.8%inclusion46 decks593 decks
5%synergy
Lands
Island
96%inclusion569 decks593 decks
0%synergy
Forest
96%inclusion568 decks593 decks
0%synergy
Command Tower
84%inclusion500 decks593 decks
-1%synergy
Simic Growth Chamber
55%inclusion325 decks593 decks
7%synergy
Hinterland Harbor
55%inclusion324 decks593 decks
-5%synergy
Yavimaya Coast
50%inclusion296 decks593 decks
-3%synergy
Temple of Mystery
46%inclusion272 decks593 decks
8%synergy
Vineglimmer Snarl
42%inclusion252 decks593 decks
4%synergy
Dreamroot Cascade
39%inclusion230 decks593 decks
-4%synergy
Flooded Grove
38%inclusion228 decks593 decks
-3%synergy
Evolving Wilds
33%inclusion198 decks593 decks
8%synergy
Myriad Landscape
31%inclusion186 decks593 decks
10%synergy
Rejuvenating Springs
31%inclusion183 decks593 decks
-13%synergy
Thornwood Falls
30%inclusion179 decks593 decks
13%synergy
Exotic Orchard
27%inclusion158 decks593 decks
3%synergy
Tangled Islet
27%inclusion158 decks593 decks
10%synergy
Terramorphic Expanse
24%inclusion142 decks593 decks
4%synergy
Breeding Pool
23%inclusion134 decks593 decks
-24%synergy
Rimewood Falls
21%inclusion123 decks593 decks
12%synergy
Barkchannel Pathway
20%inclusion116 decks593 decks
-1%synergy
Simic Guildgate
19%inclusion111 decks593 decks
9%synergy
Overflowing Basin
17%inclusion95 decks573 decks
-3%synergy
Waterlogged Grove
15%inclusion87 decks593 decks
-6%synergy
Path of Ancestry
14%inclusion81 decks593 decks
-3%synergy
Blighted Woodland
12%inclusion74 decks593 decks
5%synergy
Hedge Maze
11%inclusion64 decks593 decks
-9%synergy
Willowrush Verge
11%inclusion30 decks283 decks
-6%synergy
Misty Rainforest
10%inclusion61 decks593 decks
-21%synergy
Fabled Passage
10%inclusion59 decks593 decks
-5%synergy
Littjara Mirrorlake
10%inclusion58 decks593 decks
6%synergy
Botanical Sanctum
10%inclusion58 decks593 decks
-3%synergy
Bala Ged Recovery
8.9%inclusion53 decks593 decks
-1%synergy
Woodland Stream
8.6%inclusion51 decks593 decks
3%synergy
Quandrix Campus
7.8%inclusion46 decks593 decks
1%synergy
Snow-Covered Island
7.3%inclusion43 decks593 decks
0%synergy
Glasspool Mimic
7.3%inclusion43 decks593 decks
3%synergy
Snow-Covered Forest
7.3%inclusion43 decks593 decks
1%synergy
Sink into Stupor
6.3%inclusion33 decks528 decks
-5%synergy
Lush Oasis
6.1%inclusion34 decks557 decks
0%synergy
Bridgeworks Battle
5.5%inclusion29 decks528 decks
1%synergy
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