Svyelun of Sea and Sky (Commander) - Upgraded

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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Namor the Sub-Mariner
100%inclusion1 decks1 decks
100%synergy
Attuma, Atlantean Warlord
100%inclusion1 decks1 decks
98%synergy
Waterbender Ascension
7.7%inclusion1 decks13 decks
4%synergy
Agna Qel'a
7.7%inclusion1 decks13 decks
1%synergy
High Synergy Cards
Master of the Pearl Trident
94%inclusion66 decks70 decks
93%synergy
Seafloor Oracle
90%inclusion63 decks70 decks
89%synergy
Merrow Reejerey
90%inclusion63 decks70 decks
88%synergy
Merfolk Sovereign
90%inclusion63 decks70 decks
88%synergy
Stonybrook Banneret
90%inclusion63 decks70 decks
86%synergy
Emperor Mihail II
87%inclusion61 decks70 decks
86%synergy
Kopala, Warden of Waves
86%inclusion60 decks70 decks
84%synergy
Vodalian Hexcatcher
86%inclusion60 decks70 decks
84%synergy
Lord of Atlantis
83%inclusion58 decks70 decks
82%synergy
Thieving Skydiver
77%inclusion54 decks70 decks
73%synergy
Top Cards
Counterspell
76%inclusion53 decks70 decks
9%synergy
Sapphire Medallion
74%inclusion52 decks70 decks
17%synergy
Deeproot Pilgrimage
73%inclusion51 decks70 decks
71%synergy
Bident of Thassa
71%inclusion50 decks70 decks
60%synergy
Merrow Harbinger
69%inclusion48 decks70 decks
68%synergy
Deeproot Waters
69%inclusion48 decks70 decks
67%synergy
Lullmage Mentor
64%inclusion45 decks70 decks
63%synergy
Merrow Commerce
64%inclusion45 decks70 decks
63%synergy
Tide Shaper
63%inclusion44 decks70 decks
62%synergy
Kindred Discovery
61%inclusion43 decks70 decks
55%synergy
Game Changers
Cyclonic Rift
31%inclusion22 decks70 decks
-3%synergy
Thassa's Oracle
29%inclusion20 decks70 decks
16%synergy
Rhystic Study
24%inclusion17 decks70 decks
-9%synergy
Fierce Guardianship
16%inclusion11 decks70 decks
-7%synergy
Force of Will
14%inclusion10 decks70 decks
-3%synergy
Mystical Tutor
8.6%inclusion6 decks70 decks
-15%synergy
Creatures
Tishana's Tidebinder
61%inclusion43 decks70 decks
57%synergy
Merfolk Trickster
61%inclusion43 decks70 decks
60%synergy
Mist Dancer
60%inclusion42 decks70 decks
59%synergy
Harbinger of the Tides
60%inclusion42 decks70 decks
59%synergy
Deepchannel Mentor
59%inclusion41 decks70 decks
57%synergy
Silvergill Adept
56%inclusion39 decks70 decks
55%synergy
Harbinger of the Seas
54%inclusion37 decks69 decks
45%synergy
Thada Adel, Acquisitor
53%inclusion37 decks70 decks
51%synergy
Coralhelm Commander
53%inclusion37 decks70 decks
52%synergy
Seahunter
49%inclusion34 decks70 decks
48%synergy
Triton Shorestalker
44%inclusion31 decks70 decks
42%synergy
Wanderwine Prophets
44%inclusion31 decks70 decks
44%synergy
True-Name Nemesis
43%inclusion30 decks70 decks
42%synergy
Master of Waves
43%inclusion30 decks70 decks
39%synergy
Mist-Cloaked Herald
39%inclusion27 decks70 decks
36%synergy
Streambed Aquitects
37%inclusion26 decks70 decks
37%synergy
Tempest Caller
36%inclusion25 decks70 decks
35%synergy
Wake Thrasher
36%inclusion25 decks70 decks
35%synergy
Rishadan Dockhand
33%inclusion23 decks70 decks
32%synergy
Cosi's Trickster
31%inclusion22 decks70 decks
31%synergy
Sea Scryer
31%inclusion22 decks70 decks
30%synergy
Thassa, God of the Sea
30%inclusion21 decks70 decks
26%synergy
Cursecatcher
30%inclusion21 decks70 decks
28%synergy
Summon: Leviathan
30%inclusion14 decks47 decks
28%synergy
Floodpits Drowner
29%inclusion20 decks68 decks
28%synergy
Mistcaller
29%inclusion20 decks70 decks
28%synergy
Kiora, the Rising Tide
28%inclusion19 decks68 decks
25%synergy
River Sneak
27%inclusion19 decks70 decks
26%synergy
Mindspring Merfolk
27%inclusion18 decks67 decks
26%synergy
Surgespanner
24%inclusion17 decks70 decks
24%synergy
Merfolk Looter
23%inclusion16 decks70 decks
21%synergy
Empress Galina
21%inclusion15 decks70 decks
21%synergy
Stormtide Leviathan
21%inclusion15 decks70 decks
14%synergy
Tidal Warrior
20%inclusion14 decks70 decks
19%synergy
Talrand, Sky Summoner
20%inclusion14 decks70 decks
6%synergy
Reef Shaman
19%inclusion13 decks70 decks
18%synergy
Sigil Tracer
19%inclusion13 decks70 decks
17%synergy
Alandra, Sky Dreamer
19%inclusion13 decks70 decks
12%synergy
Glasspool Mimic
19%inclusion13 decks70 decks
12%synergy
Enduring Curiosity
16%inclusion11 decks69 decks
10%synergy
Forensic Researcher
16%inclusion11 decks70 decks
15%synergy
Metallic Mimic
14%inclusion10 decks70 decks
13%synergy
Enclave Cryptologist
14%inclusion10 decks70 decks
14%synergy
Defiler of Dreams
13%inclusion9 decks70 decks
4%synergy
Gray Harbor Merfolk
13%inclusion9 decks70 decks
12%synergy
Tidebinder Mage
13%inclusion9 decks70 decks
13%synergy
Roaming Throne
13%inclusion9 decks70 decks
8%synergy
Benthic Biomancer
13%inclusion9 decks70 decks
12%synergy
Fallowsage
13%inclusion9 decks70 decks
12%synergy
Hydroelectric Specimen
12%inclusion8 decks69 decks
-2%synergy
Instants
High Tide
53%inclusion37 decks70 decks
9%synergy
Pongify
50%inclusion35 decks70 decks
10%synergy
Negate
47%inclusion33 decks70 decks
9%synergy
Rapid Hybridization
44%inclusion31 decks70 decks
10%synergy
An Offer You Can't Refuse
36%inclusion25 decks70 decks
-1%synergy
Aetherize
34%inclusion24 decks70 decks
6%synergy
Reality Shift
33%inclusion23 decks70 decks
5%synergy
Resculpt
33%inclusion23 decks70 decks
14%synergy
Arcane Denial
33%inclusion23 decks70 decks
-3%synergy
Sink into Stupor
32%inclusion22 decks69 decks
10%synergy
Swan Song
27%inclusion19 decks70 decks
1%synergy
Flare of Denial
26%inclusion18 decks69 decks
19%synergy
Brainstorm
26%inclusion18 decks70 decks
-16%synergy
Thassa's Rebuff
26%inclusion18 decks70 decks
24%synergy
Filter Out
23%inclusion16 decks70 decks
19%synergy
Archmage's Charm
20%inclusion14 decks70 decks
4%synergy
Flow of Knowledge
20%inclusion14 decks70 decks
4%synergy
Cryptic Command
17%inclusion12 decks70 decks
6%synergy
March of Swirling Mist
16%inclusion11 decks70 decks
8%synergy
Frantic Search
14%inclusion10 decks70 decks
-15%synergy
Opt
14%inclusion10 decks70 decks
-11%synergy
Spell Pierce
14%inclusion10 decks70 decks
6%synergy
Engulf the Shore
14%inclusion10 decks70 decks
6%synergy
Strix Serenade
13%inclusion9 decks69 decks
3%synergy
Mana Drain
13%inclusion9 decks70 decks
-14%synergy
Saw It Coming
11%inclusion8 decks70 decks
8%synergy
Disallow
11%inclusion8 decks70 decks
5%synergy
Narset's Reversal
10%inclusion7 decks70 decks
-2%synergy
Three Steps Ahead
8.7%inclusion6 decks69 decks
-1%synergy
Into the Flood Maw
8.7%inclusion6 decks69 decks
3%synergy
Foil
8.6%inclusion6 decks70 decks
3%synergy
Jwari Disruption
8.6%inclusion6 decks70 decks
4%synergy
Aetherspouts
8.6%inclusion6 decks70 decks
1%synergy
Wash Away
8.6%inclusion6 decks70 decks
4%synergy
Force of Negation
8.6%inclusion6 decks70 decks
-7%synergy
Misdirection
7.1%inclusion5 decks70 decks
2%synergy
Thassa's Intervention
7.1%inclusion5 decks70 decks
6%synergy
Muddle the Mixture
7.1%inclusion5 decks70 decks
-9%synergy
Slip Out the Back
7.1%inclusion5 decks70 decks
0%synergy
Mystic Confluence
7.1%inclusion5 decks70 decks
-2%synergy
Snap
7.1%inclusion5 decks70 decks
-11%synergy
Dispel
5.7%inclusion4 decks70 decks
-4%synergy
Mystic Reflection
5.7%inclusion4 decks70 decks
4%synergy
Flusterstorm
5.7%inclusion4 decks70 decks
-4%synergy
Sorceries
Aquitect's Will
49%inclusion34 decks70 decks
43%synergy
Distant Melody
43%inclusion30 decks70 decks
38%synergy
Raise the Palisade
33%inclusion23 decks70 decks
30%synergy
Ponder
30%inclusion21 decks70 decks
0%synergy
Spectral Deluge
27%inclusion19 decks70 decks
16%synergy
Preordain
17%inclusion12 decks70 decks
-7%synergy
Rite of Replication
17%inclusion12 decks70 decks
10%synergy
Sea Gate Restoration
16%inclusion11 decks70 decks
1%synergy
Ravenform
14%inclusion10 decks70 decks
5%synergy
Step Through
10%inclusion7 decks70 decks
5%synergy
Windfall
10%inclusion7 decks70 decks
-13%synergy
River's Rebuke
8.6%inclusion6 decks70 decks
5%synergy
Flow of Ideas
8.6%inclusion6 decks70 decks
4%synergy
Crashing Tide
8.6%inclusion6 decks70 decks
8%synergy
Chart a Course
8.6%inclusion6 decks70 decks
4%synergy
Curse of the Swine
8.6%inclusion6 decks70 decks
-3%synergy
Inundate
7.1%inclusion5 decks70 decks
5%synergy
Wash Out
7.1%inclusion5 decks70 decks
2%synergy
Lórien Revealed
7.1%inclusion5 decks70 decks
-2%synergy
Treasure Cruise
5.7%inclusion4 decks70 decks
-6%synergy
Quasiduplicate
5.7%inclusion4 decks70 decks
3%synergy
Retraced Image
5.7%inclusion4 decks70 decks
3%synergy
Utility Artifacts
Herald's Horn
33%inclusion23 decks70 decks
31%synergy
Vanquisher's Banner
29%inclusion20 decks70 decks
27%synergy
Quicksilver Fountain
26%inclusion18 decks70 decks
24%synergy
Kefnet's Monument
24%inclusion17 decks70 decks
18%synergy
Lightning Greaves
24%inclusion17 decks70 decks
-2%synergy
Aether Vial
19%inclusion13 decks70 decks
18%synergy
Banner of Kinship
18%inclusion12 decks68 decks
15%synergy
Wayfarer's Bauble
16%inclusion11 decks70 decks
-3%synergy
Coat of Arms
16%inclusion11 decks70 decks
14%synergy
Door of Destinies
13%inclusion9 decks70 decks
12%synergy
Swiftfoot Boots
10%inclusion7 decks70 decks
-18%synergy
Urza's Incubator
8.6%inclusion6 decks70 decks
7%synergy
The Indomitable
8.6%inclusion6 decks70 decks
6%synergy
The Water Crystal
6.5%inclusion3 decks46 decks
-4%synergy
Icon of Ancestry
5.7%inclusion4 decks70 decks
5%synergy
Helm of the Host
5.7%inclusion4 decks70 decks
2%synergy
Sword of the Animist
5.7%inclusion4 decks70 decks
0%synergy
Enchantments
Reflections of Littjara
49%inclusion34 decks70 decks
45%synergy
Spreading Seas
41%inclusion29 decks70 decks
40%synergy
Mystic Remora
30%inclusion21 decks70 decks
3%synergy
Reconnaissance Mission
29%inclusion20 decks70 decks
22%synergy
Coastal Piracy
23%inclusion16 decks70 decks
19%synergy
Imprisoned in the Moon
19%inclusion13 decks70 decks
7%synergy
Curiosity
16%inclusion11 decks70 decks
13%synergy
Military Intelligence
13%inclusion9 decks70 decks
12%synergy
Intruder Alarm
11%inclusion8 decks70 decks
8%synergy
Sea's Claim
11%inclusion8 decks70 decks
11%synergy
Wizard Class
11%inclusion8 decks70 decks
-5%synergy
Aquatic Incursion
11%inclusion8 decks70 decks
11%synergy
Propaganda
10%inclusion7 decks70 decks
-20%synergy
Back to Basics
10%inclusion7 decks70 decks
2%synergy
Leyline of Anticipation
8.6%inclusion6 decks70 decks
-1%synergy
Amphibian Downpour
5.8%inclusion4 decks69 decks
0%synergy
Teferi's Ageless Insight
5.7%inclusion4 decks70 decks
-11%synergy
Eaten by Piranhas
5.7%inclusion4 decks70 decks
2%synergy
Combat Research
5.7%inclusion4 decks70 decks
3%synergy
Ominous Seas
5.7%inclusion4 decks70 decks
-5%synergy
Utility Lands
Mystic Sanctuary
61%inclusion43 decks70 decks
11%synergy
Reliquary Tower
60%inclusion42 decks70 decks
4%synergy
Nykthos, Shrine to Nyx
33%inclusion23 decks70 decks
17%synergy
Castle Vantress
31%inclusion22 decks70 decks
12%synergy
Otawara, Soaring City
29%inclusion20 decks70 decks
3%synergy
Three Tree City
26%inclusion18 decks69 decks
23%synergy
Mutavault
24%inclusion17 decks70 decks
23%synergy
Rogue's Passage
24%inclusion17 decks70 decks
9%synergy
Scavenger Grounds
20%inclusion14 decks70 decks
13%synergy
Minamo, School at Water's Edge
19%inclusion13 decks70 decks
6%synergy
Halimar Depths
17%inclusion12 decks70 decks
7%synergy
Lonely Sandbar
17%inclusion12 decks70 decks
3%synergy
Riptide Laboratory
14%inclusion10 decks70 decks
4%synergy
Rivendell
13%inclusion9 decks70 decks
1%synergy
War Room
11%inclusion8 decks70 decks
-5%synergy
Temple of the False God
11%inclusion8 decks70 decks
1%synergy
Cephalid Coliseum
8.6%inclusion6 decks70 decks
0%synergy
Ghost Quarter
8.6%inclusion6 decks70 decks
6%synergy
Mistrise Village
8.2%inclusion5 decks61 decks
-1%synergy
Archway of Innovation
7.2%inclusion5 decks69 decks
-4%synergy
Remote Isle
7.1%inclusion5 decks70 decks
2%synergy
Svyelunite Temple
7.1%inclusion5 decks70 decks
6%synergy
Academy Ruins
5.7%inclusion4 decks70 decks
-13%synergy
Terrain Generator
5.7%inclusion4 decks70 decks
-2%synergy
Saprazzan Skerry
5.7%inclusion4 decks70 decks
3%synergy
Hall of Storm Giants
5.7%inclusion4 decks70 decks
3%synergy
Mana Artifacts
Sol Ring
80%inclusion56 decks70 decks
-5%synergy
Arcane Signet
66%inclusion46 decks70 decks
1%synergy
Thought Vessel
39%inclusion27 decks70 decks
-13%synergy
Patchwork Banner
35%inclusion24 decks69 decks
31%synergy
Heraldic Banner
27%inclusion19 decks70 decks
21%synergy
Caged Sun
20%inclusion14 decks70 decks
8%synergy
Sky Diamond
19%inclusion13 decks70 decks
-5%synergy
Mind Stone
19%inclusion13 decks70 decks
-18%synergy
Fellwar Stone
14%inclusion10 decks70 decks
-6%synergy
Nyx Lotus
11%inclusion8 decks70 decks
7%synergy
Midnight Clock
11%inclusion8 decks70 decks
-9%synergy
Decanter of Endless Water
10%inclusion7 decks70 decks
-4%synergy
Gauntlet of Power
8.6%inclusion6 decks70 decks
4%synergy
Springleaf Drum
8.6%inclusion6 decks70 decks
5%synergy
Commander's Sphere
7.1%inclusion5 decks70 decks
-3%synergy
Gilded Lotus
7.1%inclusion5 decks70 decks
-4%synergy
Lands
Island
97%inclusion68 decks70 decks
4%synergy
Path of Ancestry
36%inclusion25 decks70 decks
32%synergy
Sink into Stupor
32%inclusion22 decks69 decks
10%synergy
Cavern of Souls
23%inclusion16 decks70 decks
18%synergy
Myriad Landscape
20%inclusion14 decks70 decks
-7%synergy
Glasspool Mimic
19%inclusion13 decks70 decks
12%synergy
Sea Gate Restoration
16%inclusion11 decks70 decks
1%synergy
Hydroelectric Specimen
12%inclusion8 decks69 decks
-2%synergy
Jwari Disruption
8.6%inclusion6 decks70 decks
4%synergy
Umara Wizard
7.1%inclusion5 decks70 decks
7%synergy
Demolition Field
7.1%inclusion5 decks70 decks
2%synergy
Polluted Delta
7.1%inclusion5 decks70 decks
-1%synergy
Flooded Strand
7.1%inclusion5 decks70 decks
-1%synergy
Terramorphic Expanse
5.7%inclusion4 decks70 decks
3%synergy
Misty Rainforest
5.7%inclusion4 decks70 decks
-2%synergy
Snow-Covered Island
5.7%inclusion4 decks70 decks
-2%synergy
Scalding Tarn
5.7%inclusion4 decks70 decks
-2%synergy
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