Svyelun of Sea and Sky (Commander) - Optimized Merfolk

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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Champions of the Shoal
50%inclusion1 decks2 decks
50%synergy
High Synergy Cards
Master of the Pearl Trident
100%inclusion8 decks8 decks
98%synergy
Emperor Mihail II
88%inclusion7 decks8 decks
87%synergy
Merrow Commerce
88%inclusion7 decks8 decks
86%synergy
Deepchannel Mentor
88%inclusion7 decks8 decks
86%synergy
Seafloor Oracle
88%inclusion7 decks8 decks
86%synergy
Vodalian Hexcatcher
88%inclusion7 decks8 decks
86%synergy
Merrow Reejerey
88%inclusion7 decks8 decks
86%synergy
Merfolk Sovereign
88%inclusion7 decks8 decks
86%synergy
Triton Shorestalker
88%inclusion7 decks8 decks
85%synergy
Stonybrook Banneret
88%inclusion7 decks8 decks
84%synergy
Top Cards
Harbinger of the Seas
88%inclusion7 decks8 decks
79%synergy
Sapphire Medallion
88%inclusion7 decks8 decks
29%synergy
Kopala, Warden of Waves
75%inclusion6 decks8 decks
74%synergy
Tishana's Tidebinder
75%inclusion6 decks8 decks
70%synergy
Negate
75%inclusion6 decks8 decks
37%synergy
Mist-Cloaked Herald
75%inclusion6 decks8 decks
73%synergy
Lullmage Mentor
75%inclusion6 decks8 decks
73%synergy
Harbinger of the Tides
75%inclusion6 decks8 decks
74%synergy
Thada Adel, Acquisitor
75%inclusion6 decks8 decks
73%synergy
Mist Dancer
75%inclusion6 decks8 decks
74%synergy
Game Changers
Cyclonic Rift
75%inclusion6 decks8 decks
41%synergy
Rhystic Study
63%inclusion5 decks8 decks
30%synergy
Fierce Guardianship
50%inclusion4 decks8 decks
27%synergy
Thassa's Oracle
13%inclusion1 decks8 decks
0%synergy
Force of Will
13%inclusion1 decks8 decks
-5%synergy
Mystical Tutor
13%inclusion1 decks8 decks
-11%synergy
Creatures
Silvergill Adept
75%inclusion6 decks8 decks
74%synergy
Lord of Atlantis
75%inclusion6 decks8 decks
74%synergy
Tide Shaper
75%inclusion6 decks8 decks
74%synergy
Thieving Skydiver
75%inclusion6 decks8 decks
71%synergy
True-Name Nemesis
63%inclusion5 decks8 decks
62%synergy
Wanderwine Prophets
63%inclusion5 decks8 decks
62%synergy
Tempest Caller
63%inclusion5 decks8 decks
62%synergy
Merfolk Trickster
63%inclusion5 decks8 decks
61%synergy
Merrow Harbinger
50%inclusion4 decks8 decks
49%synergy
Master of Waves
50%inclusion4 decks8 decks
46%synergy
Coralhelm Commander
50%inclusion4 decks8 decks
49%synergy
Rishadan Dockhand
50%inclusion4 decks8 decks
49%synergy
Thassa, God of the Sea
50%inclusion4 decks8 decks
46%synergy
River Sneak
38%inclusion3 decks8 decks
37%synergy
Wake Thrasher
38%inclusion3 decks8 decks
37%synergy
Metallic Mimic
25%inclusion2 decks8 decks
24%synergy
Mindspring Merfolk
25%inclusion2 decks8 decks
24%synergy
Seahunter
25%inclusion2 decks8 decks
24%synergy
Kiora, the Rising Tide
25%inclusion2 decks8 decks
22%synergy
Streambed Aquitects
25%inclusion2 decks8 decks
24%synergy
Tidal Warrior
25%inclusion2 decks8 decks
24%synergy
Cursecatcher
25%inclusion2 decks8 decks
23%synergy
Glasspool Mimic
25%inclusion2 decks8 decks
19%synergy
Tidebinder Mage
25%inclusion2 decks8 decks
25%synergy
Summon: Leviathan
25%inclusion2 decks8 decks
23%synergy
Enclave Elite
13%inclusion1 decks8 decks
12%synergy
Roaming Throne
13%inclusion1 decks8 decks
8%synergy
Cosi's Trickster
13%inclusion1 decks8 decks
12%synergy
Salvager of Secrets
13%inclusion1 decks8 decks
12%synergy
Surgespanner
13%inclusion1 decks8 decks
12%synergy
Floodpits Drowner
13%inclusion1 decks8 decks
11%synergy
Merfolk Wayfinder
13%inclusion1 decks8 decks
12%synergy
Sigil Tracer
13%inclusion1 decks8 decks
11%synergy
Adaptive Automaton
13%inclusion1 decks8 decks
11%synergy
Tazeem Roilmage
13%inclusion1 decks8 decks
12%synergy
Scourge of Fleets
13%inclusion1 decks8 decks
0%synergy
Hydroelectric Specimen
13%inclusion1 decks8 decks
-1%synergy
Siren Stormtamer
13%inclusion1 decks8 decks
6%synergy
Merfolk Looter
13%inclusion1 decks8 decks
10%synergy
Slinn Voda, the Rising Deep
13%inclusion1 decks8 decks
11%synergy
Mistcaller
13%inclusion1 decks8 decks
12%synergy
Raving Visionary
13%inclusion1 decks8 decks
12%synergy
Saprazzan Heir
13%inclusion1 decks8 decks
12%synergy
Mistway Spy
13%inclusion1 decks8 decks
12%synergy
Brineborn Cutthroat
13%inclusion1 decks8 decks
12%synergy
Alandra, Sky Dreamer
13%inclusion1 decks8 decks
5%synergy
Vodalian Illusionist
13%inclusion1 decks8 decks
12%synergy
Enclave Cryptologist
13%inclusion1 decks8 decks
12%synergy
Emry, Lurker of the Loch
13%inclusion1 decks8 decks
1%synergy
Shipwreck Dowser
13%inclusion1 decks8 decks
10%synergy
Instants
Counterspell
75%inclusion6 decks8 decks
9%synergy
High Tide
75%inclusion6 decks8 decks
31%synergy
Pongify
63%inclusion5 decks8 decks
22%synergy
Reality Shift
63%inclusion5 decks8 decks
35%synergy
Mana Drain
63%inclusion5 decks8 decks
36%synergy
Aetherize
63%inclusion5 decks8 decks
33%synergy
Arcane Denial
63%inclusion5 decks8 decks
26%synergy
Rapid Hybridization
50%inclusion4 decks8 decks
15%synergy
Thassa's Rebuff
50%inclusion4 decks8 decks
49%synergy
An Offer You Can't Refuse
38%inclusion3 decks8 decks
0%synergy
Brainstorm
25%inclusion2 decks8 decks
-16%synergy
Resculpt
25%inclusion2 decks8 decks
7%synergy
Swan Song
25%inclusion2 decks8 decks
-1%synergy
Force of Negation
25%inclusion2 decks8 decks
10%synergy
Sink into Stupor
25%inclusion2 decks8 decks
3%synergy
Pact of Negation
25%inclusion2 decks8 decks
15%synergy
Spider-Sense
14%inclusion1 decks7 decks
11%synergy
Muddle the Mixture
13%inclusion1 decks8 decks
-3%synergy
Frantic Search
13%inclusion1 decks8 decks
-18%synergy
Flare of Denial
13%inclusion1 decks8 decks
6%synergy
Blink of an Eye
13%inclusion1 decks8 decks
11%synergy
Leadership Vacuum
13%inclusion1 decks8 decks
11%synergy
Strix Serenade
13%inclusion1 decks8 decks
3%synergy
Filter Out
13%inclusion1 decks8 decks
9%synergy
Cryptic Command
13%inclusion1 decks8 decks
1%synergy
Flow of Knowledge
13%inclusion1 decks8 decks
-4%synergy
Mana Leak
13%inclusion1 decks8 decks
6%synergy
Masterful Replication
13%inclusion1 decks8 decks
11%synergy
Mystic Confluence
13%inclusion1 decks8 decks
3%synergy
Narset's Reversal
13%inclusion1 decks8 decks
0%synergy
Abjure
13%inclusion1 decks8 decks
8%synergy
March of Swirling Mist
13%inclusion1 decks8 decks
5%synergy
Sorceries
Distant Melody
63%inclusion5 decks8 decks
57%synergy
Raise the Palisade
63%inclusion5 decks8 decks
59%synergy
Aquitect's Will
50%inclusion4 decks8 decks
45%synergy
Ponder
38%inclusion3 decks8 decks
8%synergy
Spectral Deluge
25%inclusion2 decks8 decks
14%synergy
Inundate
13%inclusion1 decks8 decks
11%synergy
Sleight of Hand
13%inclusion1 decks8 decks
10%synergy
Windfall
13%inclusion1 decks8 decks
-10%synergy
Walk the Aeons
13%inclusion1 decks8 decks
11%synergy
Rhythmic Water Vortex
13%inclusion1 decks8 decks
12%synergy
Sea Gate Restoration
13%inclusion1 decks8 decks
-2%synergy
Part the Waterveil
13%inclusion1 decks8 decks
12%synergy
Curse of the Swine
13%inclusion1 decks8 decks
1%synergy
Ancestral Vision
13%inclusion1 decks8 decks
11%synergy
Timetwister
13%inclusion1 decks8 decks
10%synergy
Solve the Equation
13%inclusion1 decks8 decks
0%synergy
Utility Artifacts
Bident of Thassa
75%inclusion6 decks8 decks
63%synergy
Kefnet's Monument
63%inclusion5 decks8 decks
56%synergy
Herald's Horn
50%inclusion4 decks8 decks
48%synergy
Swiftfoot Boots
50%inclusion4 decks8 decks
22%synergy
Vanquisher's Banner
38%inclusion3 decks8 decks
36%synergy
Coat of Arms
25%inclusion2 decks8 decks
23%synergy
Sword of Hearth and Home
25%inclusion2 decks8 decks
23%synergy
Lightning Greaves
25%inclusion2 decks8 decks
-1%synergy
Sword of the Animist
25%inclusion2 decks8 decks
19%synergy
Sword of Light and Shadow
13%inclusion1 decks8 decks
12%synergy
Zephyr Boots
13%inclusion1 decks8 decks
12%synergy
Nettlecyst
13%inclusion1 decks8 decks
10%synergy
Team Pennant
13%inclusion1 decks8 decks
12%synergy
Umezawa's Jitte
13%inclusion1 decks8 decks
12%synergy
Rogue's Gloves
13%inclusion1 decks8 decks
12%synergy
Wayfarer's Bauble
13%inclusion1 decks8 decks
-5%synergy
Masterwork of Ingenuity
13%inclusion1 decks8 decks
12%synergy
Leyline Axe
13%inclusion1 decks8 decks
10%synergy
Mantle of Tides
13%inclusion1 decks8 decks
12%synergy
Chariot of Victory
13%inclusion1 decks8 decks
12%synergy
Haunted Cloak
13%inclusion1 decks8 decks
12%synergy
Sword of Truth and Justice
13%inclusion1 decks8 decks
11%synergy
Armory of Iroas
13%inclusion1 decks8 decks
12%synergy
Fireshrieker
13%inclusion1 decks8 decks
7%synergy
Sanctuary Blade
13%inclusion1 decks8 decks
12%synergy
Sword of War and Peace
13%inclusion1 decks8 decks
12%synergy
Goldvein Pick
13%inclusion1 decks8 decks
12%synergy
Eldrazi Monument
13%inclusion1 decks8 decks
12%synergy
Sword of Sinew and Steel
13%inclusion1 decks8 decks
12%synergy
Sword of Feast and Famine
13%inclusion1 decks8 decks
11%synergy
Loxodon Warhammer
13%inclusion1 decks8 decks
11%synergy
Blackblade Reforged
13%inclusion1 decks8 decks
8%synergy
Hero's Blade
13%inclusion1 decks8 decks
12%synergy
Forebear's Blade
13%inclusion1 decks8 decks
12%synergy
Aether Vial
13%inclusion1 decks8 decks
12%synergy
Enchantments
Kindred Discovery
63%inclusion5 decks8 decks
56%synergy
Deeproot Pilgrimage
63%inclusion5 decks8 decks
61%synergy
Mystic Remora
50%inclusion4 decks8 decks
23%synergy
Deeproot Waters
50%inclusion4 decks8 decks
49%synergy
Spreading Seas
50%inclusion4 decks8 decks
49%synergy
Reflections of Littjara
50%inclusion4 decks8 decks
47%synergy
Reconnaissance Mission
38%inclusion3 decks8 decks
31%synergy
Imprisoned in the Moon
25%inclusion2 decks8 decks
13%synergy
Witness Protection
25%inclusion2 decks8 decks
19%synergy
Back to Basics
13%inclusion1 decks8 decks
5%synergy
Curiosity
13%inclusion1 decks8 decks
10%synergy
Aqueous Form
13%inclusion1 decks8 decks
7%synergy
Wizard Class
13%inclusion1 decks8 decks
-4%synergy
Unable to Scream
13%inclusion1 decks8 decks
9%synergy
Military Intelligence
13%inclusion1 decks8 decks
11%synergy
Steal Enchantment
13%inclusion1 decks8 decks
11%synergy
Octopus Umbra
13%inclusion1 decks8 decks
12%synergy
Amphibian Downpour
13%inclusion1 decks8 decks
7%synergy
Propaganda
13%inclusion1 decks8 decks
-18%synergy
Planeswalkers
Mu Yanling
13%inclusion1 decks8 decks
12%synergy
Utility Lands
Mystic Sanctuary
75%inclusion6 decks8 decks
25%synergy
Reliquary Tower
75%inclusion6 decks8 decks
19%synergy
Castle Vantress
50%inclusion4 decks8 decks
31%synergy
Nykthos, Shrine to Nyx
38%inclusion3 decks8 decks
21%synergy
Minamo, School at Water's Edge
25%inclusion2 decks8 decks
13%synergy
Scavenger Grounds
25%inclusion2 decks8 decks
18%synergy
Mutavault
25%inclusion2 decks8 decks
24%synergy
War Room
25%inclusion2 decks8 decks
9%synergy
Otawara, Soaring City
25%inclusion2 decks8 decks
0%synergy
Hall of Storm Giants
13%inclusion1 decks8 decks
10%synergy
Halimar Depths
13%inclusion1 decks8 decks
3%synergy
Riptide Laboratory
13%inclusion1 decks8 decks
2%synergy
Tolaria West
13%inclusion1 decks8 decks
7%synergy
Throne of the High City
13%inclusion1 decks8 decks
12%synergy
Cephalid Coliseum
13%inclusion1 decks8 decks
3%synergy
Three Tree City
13%inclusion1 decks8 decks
9%synergy
Rogue's Passage
13%inclusion1 decks8 decks
-3%synergy
Bonders' Enclave
13%inclusion1 decks8 decks
11%synergy
Field of Ruin
13%inclusion1 decks8 decks
10%synergy
Mana Artifacts
Sol Ring
88%inclusion7 decks8 decks
2%synergy
Arcane Signet
75%inclusion6 decks8 decks
10%synergy
Thought Vessel
75%inclusion6 decks8 decks
23%synergy
Patchwork Banner
63%inclusion5 decks8 decks
59%synergy
Sky Diamond
50%inclusion4 decks8 decks
27%synergy
Caged Sun
25%inclusion2 decks8 decks
14%synergy
Heraldic Banner
25%inclusion2 decks8 decks
19%synergy
Mind Stone
25%inclusion2 decks8 decks
-11%synergy
White Lotus Tile
17%inclusion1 decks6 decks
16%synergy
Hedron Archive
13%inclusion1 decks8 decks
7%synergy
Sol Talisman
13%inclusion1 decks8 decks
11%synergy
Fractured Powerstone
13%inclusion1 decks8 decks
12%synergy
Springleaf Drum
13%inclusion1 decks8 decks
9%synergy
Lands
Island
100%inclusion8 decks8 decks
6%synergy
Path of Ancestry
75%inclusion6 decks8 decks
71%synergy
Myriad Landscape
38%inclusion3 decks8 decks
11%synergy
Cavern of Souls
25%inclusion2 decks8 decks
20%synergy
Sink into Stupor
25%inclusion2 decks8 decks
3%synergy
Glasspool Mimic
25%inclusion2 decks8 decks
19%synergy
Sea Gate Restoration
13%inclusion1 decks8 decks
-2%synergy
Hydroelectric Specimen
13%inclusion1 decks8 decks
-1%synergy
Demolition Field
13%inclusion1 decks8 decks
7%synergy
Opal Palace
13%inclusion1 decks8 decks
12%synergy
Gemstone Caverns
13%inclusion1 decks8 decks
6%synergy
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