Svyelun of Sea and Sky (Commander) - Aggro

Svyelun of Sea and Sky
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Background image for 21 Best Merfolk Cards for Commander
Chris Guest
Jul 9, 2025
Chris Guest
21 Best Merfolk Cards for Commander
As one of Magic's oldest creature types, there are no shortage of excellent Merfolk to brew with. Chris breaks down the best of the best in this list.
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Attuma, Atlantean Warlord
75%inclusion3 decks4 decks
73%synergy
Namor the Sub-Mariner
25%inclusion1 decks4 decks
25%synergy
Agna Qel'a
11%inclusion1 decks9 decks
4%synergy
Waterbender Ascension
11%inclusion1 decks9 decks
7%synergy
Waterbending Scroll
11%inclusion1 decks9 decks
2%synergy
High Synergy Cards
Emperor Mihail II
100%inclusion36 decks36 decks
99%synergy
Master of the Pearl Trident
100%inclusion36 decks36 decks
98%synergy
Merrow Reejerey
97%inclusion35 decks36 decks
96%synergy
Lord of Atlantis
94%inclusion34 decks36 decks
93%synergy
Stonybrook Banneret
94%inclusion34 decks36 decks
91%synergy
Kopala, Warden of Waves
92%inclusion33 decks36 decks
90%synergy
Vodalian Hexcatcher
92%inclusion33 decks36 decks
90%synergy
Merfolk Sovereign
92%inclusion33 decks36 decks
90%synergy
Deeproot Waters
89%inclusion32 decks36 decks
88%synergy
Tide Shaper
86%inclusion31 decks36 decks
85%synergy
Top Cards
Deeproot Pilgrimage
86%inclusion31 decks36 decks
85%synergy
Sapphire Medallion
86%inclusion31 decks36 decks
29%synergy
Seafloor Oracle
86%inclusion31 decks36 decks
85%synergy
Counterspell
81%inclusion29 decks36 decks
14%synergy
Lullmage Mentor
78%inclusion28 decks36 decks
76%synergy
Thieving Skydiver
78%inclusion28 decks36 decks
74%synergy
Merfolk Trickster
78%inclusion28 decks36 decks
76%synergy
Merrow Harbinger
75%inclusion27 decks36 decks
74%synergy
Mist Dancer
75%inclusion27 decks36 decks
74%synergy
Silvergill Adept
75%inclusion27 decks36 decks
74%synergy
Game Changers
Cyclonic Rift
39%inclusion14 decks36 decks
4%synergy
Rhystic Study
36%inclusion13 decks36 decks
3%synergy
Thassa's Oracle
22%inclusion8 decks36 decks
9%synergy
Force of Will
22%inclusion8 decks36 decks
5%synergy
Fierce Guardianship
19%inclusion7 decks36 decks
-4%synergy
Mystical Tutor
17%inclusion6 decks36 decks
-7%synergy
Ancient Tomb
8.3%inclusion3 decks36 decks
-4%synergy
The One Ring
8.3%inclusion3 decks36 decks
-4%synergy
Chrome Mox
8.3%inclusion3 decks36 decks
-1%synergy
Mana Vault
5.6%inclusion2 decks36 decks
-5%synergy
Creatures
Harbinger of the Seas
74%inclusion26 decks35 decks
65%synergy
Harbinger of the Tides
69%inclusion25 decks36 decks
68%synergy
Tishana's Tidebinder
64%inclusion23 decks36 decks
59%synergy
Wanderwine Prophets
64%inclusion23 decks36 decks
63%synergy
Thada Adel, Acquisitor
64%inclusion23 decks36 decks
62%synergy
Deepchannel Mentor
56%inclusion20 decks36 decks
54%synergy
Coralhelm Commander
53%inclusion19 decks36 decks
52%synergy
Mistcaller
53%inclusion19 decks36 decks
52%synergy
Cursecatcher
53%inclusion19 decks36 decks
51%synergy
Triton Shorestalker
50%inclusion18 decks36 decks
48%synergy
Mist-Cloaked Herald
50%inclusion18 decks36 decks
48%synergy
Master of Waves
47%inclusion17 decks36 decks
43%synergy
True-Name Nemesis
47%inclusion17 decks36 decks
46%synergy
Seahunter
47%inclusion17 decks36 decks
47%synergy
Tempest Caller
42%inclusion15 decks36 decks
41%synergy
River Sneak
39%inclusion14 decks36 decks
38%synergy
Floodpits Drowner
37%inclusion10 decks27 decks
36%synergy
Empress Galina
36%inclusion13 decks36 decks
35%synergy
Sea Scryer
36%inclusion13 decks36 decks
35%synergy
Wake Thrasher
33%inclusion12 decks36 decks
33%synergy
Rishadan Dockhand
31%inclusion11 decks36 decks
30%synergy
Streambed Aquitects
31%inclusion11 decks36 decks
30%synergy
Mindspring Merfolk
29%inclusion7 decks24 decks
28%synergy
Glasspool Mimic
28%inclusion10 decks36 decks
22%synergy
Cosi's Trickster
25%inclusion9 decks36 decks
24%synergy
Thassa, God of the Sea
25%inclusion9 decks36 decks
21%synergy
Tidal Warrior
25%inclusion9 decks36 decks
24%synergy
Merfolk Looter
22%inclusion8 decks36 decks
20%synergy
Enduring Curiosity
22%inclusion6 decks27 decks
16%synergy
Talrand, Sky Summoner
22%inclusion8 decks36 decks
8%synergy
Summon: Leviathan
22%inclusion4 decks18 decks
21%synergy
Benthic Biomancer
19%inclusion7 decks36 decks
19%synergy
Gray Harbor Merfolk
19%inclusion7 decks36 decks
19%synergy
Kiora, the Rising Tide
19%inclusion5 decks26 decks
16%synergy
Roaming Throne
17%inclusion6 decks36 decks
12%synergy
Sigil Tracer
17%inclusion6 decks36 decks
15%synergy
Stormtide Leviathan
14%inclusion5 decks36 decks
7%synergy
Tideshaper Mystic
14%inclusion5 decks36 decks
14%synergy
Surgespanner
14%inclusion5 decks36 decks
13%synergy
Titan of Littjara
14%inclusion5 decks36 decks
12%synergy
Tidebinder Mage
14%inclusion5 decks36 decks
14%synergy
Seasinger
11%inclusion4 decks36 decks
11%synergy
Metallic Mimic
11%inclusion4 decks36 decks
10%synergy
Reef Shaman
11%inclusion4 decks36 decks
11%synergy
Rootwater Thief
11%inclusion4 decks36 decks
11%synergy
Slinn Voda, the Rising Deep
11%inclusion4 decks36 decks
10%synergy
Forensic Researcher
11%inclusion4 decks36 decks
10%synergy
Alandra, Sky Dreamer
11%inclusion4 decks36 decks
4%synergy
Defiler of Dreams
11%inclusion4 decks36 decks
2%synergy
Drowner of Secrets
11%inclusion4 decks36 decks
11%synergy
Instants
Negate
58%inclusion21 decks36 decks
20%synergy
High Tide
53%inclusion19 decks36 decks
8%synergy
Rapid Hybridization
47%inclusion17 decks36 decks
13%synergy
Pongify
44%inclusion16 decks36 decks
4%synergy
Aetherize
44%inclusion16 decks36 decks
16%synergy
Reality Shift
39%inclusion14 decks36 decks
11%synergy
Brainstorm
36%inclusion13 decks36 decks
-5%synergy
Flare of Denial
34%inclusion12 decks35 decks
28%synergy
An Offer You Can't Refuse
33%inclusion12 decks36 decks
-3%synergy
Sink into Stupor
31%inclusion11 decks35 decks
10%synergy
Cryptic Command
31%inclusion11 decks36 decks
19%synergy
Swan Song
28%inclusion10 decks36 decks
2%synergy
Thassa's Rebuff
28%inclusion10 decks36 decks
27%synergy
Mana Drain
25%inclusion9 decks36 decks
-2%synergy
Resculpt
25%inclusion9 decks36 decks
6%synergy
Filter Out
25%inclusion9 decks36 decks
21%synergy
Arcane Denial
19%inclusion7 decks36 decks
-17%synergy
Foil
14%inclusion5 decks36 decks
8%synergy
Archmage's Charm
14%inclusion5 decks36 decks
-3%synergy
Flusterstorm
14%inclusion5 decks36 decks
4%synergy
Spell Pierce
14%inclusion5 decks36 decks
5%synergy
Mystic Reflection
11%inclusion4 decks36 decks
9%synergy
Force of Negation
11%inclusion4 decks36 decks
-4%synergy
Snap
11%inclusion4 decks36 decks
-7%synergy
Muddle the Mixture
8.3%inclusion3 decks36 decks
-8%synergy
Frantic Search
8.3%inclusion3 decks36 decks
-21%synergy
Aetherspouts
8.3%inclusion3 decks36 decks
1%synergy
Opt
8.3%inclusion3 decks36 decks
-17%synergy
Submerge
8.3%inclusion3 decks36 decks
7%synergy
Wash Away
8.3%inclusion3 decks36 decks
4%synergy
Mana Leak
8.3%inclusion3 decks36 decks
2%synergy
March of Swirling Mist
8.3%inclusion3 decks36 decks
0%synergy
Consult the Star Charts
6.3%inclusion1 decks16 decks
2%synergy
Strix Serenade
5.7%inclusion2 decks35 decks
-4%synergy
Disdainful Stroke
5.6%inclusion2 decks36 decks
1%synergy
Transcendent Message
5.6%inclusion2 decks36 decks
3%synergy
Chain of Vapor
5.6%inclusion2 decks36 decks
0%synergy
Cyber Conversion
5.6%inclusion2 decks36 decks
2%synergy
Stubborn Denial
5.6%inclusion2 decks36 decks
3%synergy
Essence Scatter
5.6%inclusion2 decks36 decks
2%synergy
Turnabout
5.6%inclusion2 decks36 decks
2%synergy
Cancel
5.6%inclusion2 decks36 decks
0%synergy
Jwari Disruption
5.6%inclusion2 decks36 decks
1%synergy
Engulf the Shore
5.6%inclusion2 decks36 decks
-3%synergy
Flow of Knowledge
5.6%inclusion2 decks36 decks
-11%synergy
Wizard's Retort
5.6%inclusion2 decks36 decks
1%synergy
Rewind
5.6%inclusion2 decks36 decks
-7%synergy
Mystic Confluence
5.6%inclusion2 decks36 decks
-4%synergy
Shimmering Mirage
5.6%inclusion2 decks36 decks
3%synergy
Boomerang
5.6%inclusion2 decks36 decks
4%synergy
Sorceries
Distant Melody
42%inclusion15 decks36 decks
37%synergy
Aquitect's Will
42%inclusion15 decks36 decks
36%synergy
Raise the Palisade
42%inclusion15 decks36 decks
39%synergy
Ponder
25%inclusion9 decks36 decks
-5%synergy
Sea Gate Restoration
22%inclusion8 decks36 decks
7%synergy
Windfall
19%inclusion7 decks36 decks
-3%synergy
Inundate
17%inclusion6 decks36 decks
15%synergy
Curse of the Swine
17%inclusion6 decks36 decks
5%synergy
Ravenform
17%inclusion6 decks36 decks
7%synergy
Spectral Deluge
14%inclusion5 decks36 decks
3%synergy
Rite of Replication
14%inclusion5 decks36 decks
7%synergy
River's Rebuke
11%inclusion4 decks36 decks
8%synergy
Preordain
8.3%inclusion3 decks36 decks
-16%synergy
Step Through
8.3%inclusion3 decks36 decks
3%synergy
Echo of Eons
5.6%inclusion2 decks36 decks
3%synergy
Fabricate
5.6%inclusion2 decks36 decks
-16%synergy
Crashing Tide
5.6%inclusion2 decks36 decks
5%synergy
Serum Visions
5.6%inclusion2 decks36 decks
-5%synergy
Time Stretch
5.6%inclusion2 decks36 decks
1%synergy
Retraced Image
5.6%inclusion2 decks36 decks
3%synergy
Time Spiral
5.6%inclusion2 decks36 decks
4%synergy
Utility Artifacts
Bident of Thassa
72%inclusion26 decks36 decks
60%synergy
Kefnet's Monument
42%inclusion15 decks36 decks
35%synergy
Vanquisher's Banner
31%inclusion11 decks36 decks
29%synergy
Quicksilver Fountain
28%inclusion10 decks36 decks
26%synergy
Herald's Horn
28%inclusion10 decks36 decks
26%synergy
Lightning Greaves
28%inclusion10 decks36 decks
2%synergy
Door of Destinies
25%inclusion9 decks36 decks
24%synergy
Swiftfoot Boots
17%inclusion6 decks36 decks
-11%synergy
Banner of Kinship
15%inclusion4 decks26 decks
13%synergy
Wayfarer's Bauble
14%inclusion5 decks36 decks
-4%synergy
Sword of the Animist
14%inclusion5 decks36 decks
8%synergy
The Indomitable
11%inclusion4 decks36 decks
9%synergy
Winter Moon
8.6%inclusion3 decks35 decks
4%synergy
Commander's Plate
8.3%inclusion3 decks36 decks
4%synergy
Sword of Feast and Famine
8.3%inclusion3 decks36 decks
7%synergy
Thrumming Hivepool
6.3%inclusion1 decks16 decks
6%synergy
Soul-Guide Lantern
5.6%inclusion2 decks36 decks
1%synergy
Robe of the Archmagi
5.6%inclusion2 decks36 decks
4%synergy
Horn of the Mark
5.6%inclusion2 decks36 decks
6%synergy
Sword of Forge and Frontier
5.6%inclusion2 decks36 decks
5%synergy
Empyrial Plate
5.6%inclusion2 decks36 decks
4%synergy
Throne of the God-Pharaoh
5.6%inclusion2 decks36 decks
5%synergy
Aether Vial
5.6%inclusion2 decks36 decks
5%synergy
Enchantments
Kindred Discovery
72%inclusion26 decks36 decks
65%synergy
Merrow Commerce
72%inclusion26 decks36 decks
71%synergy
Reflections of Littjara
47%inclusion17 decks36 decks
44%synergy
Spreading Seas
33%inclusion12 decks36 decks
32%synergy
Reconnaissance Mission
28%inclusion10 decks36 decks
21%synergy
Mystic Remora
28%inclusion10 decks36 decks
0%synergy
Coastal Piracy
22%inclusion8 decks36 decks
18%synergy
Imprisoned in the Moon
17%inclusion6 decks36 decks
5%synergy
Wizard Class
17%inclusion6 decks36 decks
0%synergy
Aquatic Incursion
14%inclusion5 decks36 decks
14%synergy
Intruder Alarm
11%inclusion4 decks36 decks
8%synergy
Propaganda
11%inclusion4 decks36 decks
-19%synergy
Back to Basics
8.3%inclusion3 decks36 decks
1%synergy
Sea's Claim
8.3%inclusion3 decks36 decks
8%synergy
Counterbalance
5.6%inclusion2 decks36 decks
2%synergy
Curiosity
5.6%inclusion2 decks36 decks
3%synergy
Leyline of Anticipation
5.6%inclusion2 decks36 decks
-4%synergy
Telepathy
5.6%inclusion2 decks36 decks
3%synergy
Utility Lands
Mystic Sanctuary
69%inclusion25 decks36 decks
19%synergy
Reliquary Tower
50%inclusion18 decks36 decks
-6%synergy
Otawara, Soaring City
44%inclusion16 decks36 decks
19%synergy
Nykthos, Shrine to Nyx
42%inclusion15 decks36 decks
26%synergy
Castle Vantress
39%inclusion14 decks36 decks
20%synergy
Three Tree City
31%inclusion9 decks29 decks
28%synergy
Minamo, School at Water's Edge
25%inclusion9 decks36 decks
13%synergy
Mutavault
25%inclusion9 decks36 decks
24%synergy
Lonely Sandbar
25%inclusion9 decks36 decks
11%synergy
Halimar Depths
22%inclusion8 decks36 decks
12%synergy
Riptide Laboratory
22%inclusion8 decks36 decks
12%synergy
Scavenger Grounds
22%inclusion8 decks36 decks
15%synergy
War Room
19%inclusion7 decks36 decks
3%synergy
Rivendell
17%inclusion6 decks36 decks
5%synergy
Svyelunite Temple
14%inclusion5 decks36 decks
13%synergy
Hall of Storm Giants
11%inclusion4 decks36 decks
9%synergy
Rogue's Passage
11%inclusion4 decks36 decks
-4%synergy
Remote Isle
8.3%inclusion3 decks36 decks
3%synergy
Maze of Ith
8.3%inclusion3 decks36 decks
3%synergy
Academy Ruins
8.3%inclusion3 decks36 decks
-10%synergy
Saprazzan Skerry
8.3%inclusion3 decks36 decks
5%synergy
Sunken Palace
5.9%inclusion2 decks34 decks
2%synergy
Coral Atoll
5.6%inclusion2 decks36 decks
2%synergy
Tolaria West
5.6%inclusion2 decks36 decks
0%synergy
Urza's Saga
5.6%inclusion2 decks36 decks
-11%synergy
Emergence Zone
5.6%inclusion2 decks36 decks
1%synergy
Cephalid Coliseum
5.6%inclusion2 decks36 decks
-3%synergy
Strip Mine
5.6%inclusion2 decks36 decks
3%synergy
Mana Artifacts
Sol Ring
75%inclusion27 decks36 decks
-10%synergy
Arcane Signet
67%inclusion24 decks36 decks
2%synergy
Thought Vessel
39%inclusion14 decks36 decks
-13%synergy
Patchwork Banner
29%inclusion8 decks28 decks
25%synergy
Sky Diamond
28%inclusion10 decks36 decks
4%synergy
Fellwar Stone
22%inclusion8 decks36 decks
2%synergy
Heraldic Banner
19%inclusion7 decks36 decks
14%synergy
Lotus Petal
11%inclusion4 decks36 decks
-1%synergy
Jeweled Lotus
8.3%inclusion3 decks36 decks
5%synergy
Throne of Eldraine
8.3%inclusion3 decks36 decks
-1%synergy
Springleaf Drum
8.3%inclusion3 decks36 decks
5%synergy
Mind Stone
8.3%inclusion3 decks36 decks
-28%synergy
Nyx Lotus
8.3%inclusion3 decks36 decks
4%synergy
Mana Crypt
5.6%inclusion2 decks36 decks
2%synergy
Mox Amber
5.6%inclusion2 decks36 decks
-2%synergy
Decanter of Endless Water
5.6%inclusion2 decks36 decks
-9%synergy
Liquimetal Torque
5.6%inclusion2 decks36 decks
-1%synergy
Lands
Island
94%inclusion34 decks36 decks
1%synergy
Cavern of Souls
42%inclusion15 decks36 decks
37%synergy
Path of Ancestry
33%inclusion12 decks36 decks
29%synergy
Sink into Stupor
31%inclusion11 decks35 decks
10%synergy
Glasspool Mimic
28%inclusion10 decks36 decks
22%synergy
Myriad Landscape
25%inclusion9 decks36 decks
-1%synergy
Sea Gate Restoration
22%inclusion8 decks36 decks
7%synergy
Demolition Field
14%inclusion5 decks36 decks
9%synergy
Misty Rainforest
8.3%inclusion3 decks36 decks
0%synergy
Snow-Covered Island
8.3%inclusion3 decks36 decks
0%synergy
Scalding Tarn
8.3%inclusion3 decks36 decks
0%synergy
Abstergo Entertainment
5.9%inclusion2 decks34 decks
5%synergy
Urza's Cave
5.7%inclusion2 decks35 decks
2%synergy
Hydroelectric Specimen
5.7%inclusion2 decks35 decks
-8%synergy
Jwari Disruption
5.6%inclusion2 decks36 decks
1%synergy
Gemstone Caverns
5.6%inclusion2 decks36 decks
-1%synergy
Flooded Strand
5.6%inclusion2 decks36 decks
-3%synergy
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