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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Spider-Sense
33%inclusion1 decks3 decks
31%synergy
High Synergy Cards
Deepchannel Mentor
100%inclusion4 decks4 decks
99%synergy
Master of the Pearl Trident
100%inclusion4 decks4 decks
98%synergy
Game Changers
Cyclonic Rift
50%inclusion2 decks4 decks
14%synergy
Force of Will
25%inclusion1 decks4 decks
7%synergy
Fierce Guardianship
25%inclusion1 decks4 decks
2%synergy
Mystical Tutor
25%inclusion1 decks4 decks
0%synergy
Rhystic Study
25%inclusion1 decks4 decks
-9%synergy
Creatures
Kopala, Warden of Waves
75%inclusion3 decks4 decks
74%synergy
Stonybrook Banneret
75%inclusion3 decks4 decks
71%synergy
Merfolk Sovereign
75%inclusion3 decks4 decks
73%synergy
Vodalian Hexcatcher
75%inclusion3 decks4 decks
73%synergy
Merrow Reejerey
75%inclusion3 decks4 decks
73%synergy
Emperor Mihail II
75%inclusion3 decks4 decks
74%synergy
Triton Shorestalker
75%inclusion3 decks4 decks
73%synergy
Harbinger of the Seas
75%inclusion3 decks4 decks
66%synergy
Thada Adel, Acquisitor
75%inclusion3 decks4 decks
73%synergy
Seafloor Oracle
75%inclusion3 decks4 decks
74%synergy
Master of Waves
50%inclusion2 decks4 decks
46%synergy
Metallic Mimic
50%inclusion2 decks4 decks
49%synergy
Tishana's Tidebinder
50%inclusion2 decks4 decks
45%synergy
Mindspring Merfolk
50%inclusion2 decks4 decks
49%synergy
Kiora, the Rising Tide
50%inclusion2 decks4 decks
47%synergy
Thassa, God of the Sea
50%inclusion2 decks4 decks
46%synergy
Mist-Cloaked Herald
50%inclusion2 decks4 decks
48%synergy
Lullmage Mentor
50%inclusion2 decks4 decks
48%synergy
Tidal Warrior
50%inclusion2 decks4 decks
49%synergy
Wanderwine Prophets
50%inclusion2 decks4 decks
49%synergy
Harbinger of the Tides
50%inclusion2 decks4 decks
49%synergy
Tempest Caller
50%inclusion2 decks4 decks
49%synergy
Mist Dancer
50%inclusion2 decks4 decks
49%synergy
Silvergill Adept
50%inclusion2 decks4 decks
49%synergy
Lord of Atlantis
50%inclusion2 decks4 decks
49%synergy
Tide Shaper
50%inclusion2 decks4 decks
49%synergy
Thieving Skydiver
50%inclusion2 decks4 decks
46%synergy
Summon: Leviathan
50%inclusion2 decks4 decks
48%synergy
Merrow Harbinger
25%inclusion1 decks4 decks
24%synergy
Coralhelm Commander
25%inclusion1 decks4 decks
24%synergy
True-Name Nemesis
25%inclusion1 decks4 decks
24%synergy
Enclave Elite
25%inclusion1 decks4 decks
25%synergy
Roaming Throne
25%inclusion1 decks4 decks
21%synergy
Cosi's Trickster
25%inclusion1 decks4 decks
24%synergy
Rishadan Dockhand
25%inclusion1 decks4 decks
24%synergy
Salvager of Secrets
25%inclusion1 decks4 decks
24%synergy
Surgespanner
25%inclusion1 decks4 decks
25%synergy
Floodpits Drowner
25%inclusion1 decks4 decks
24%synergy
Merfolk Wayfinder
25%inclusion1 decks4 decks
25%synergy
Adaptive Automaton
25%inclusion1 decks4 decks
24%synergy
Tazeem Roilmage
25%inclusion1 decks4 decks
25%synergy
Scourge of Fleets
25%inclusion1 decks4 decks
12%synergy
Siren Stormtamer
25%inclusion1 decks4 decks
19%synergy
Streambed Aquitects
25%inclusion1 decks4 decks
24%synergy
Merfolk Looter
25%inclusion1 decks4 decks
23%synergy
River Sneak
25%inclusion1 decks4 decks
24%synergy
Slinn Voda, the Rising Deep
25%inclusion1 decks4 decks
24%synergy
Breaching Leviathan
25%inclusion1 decks4 decks
24%synergy
Mistcaller
25%inclusion1 decks4 decks
24%synergy
Raving Visionary
25%inclusion1 decks4 decks
25%synergy
Instants
Mana Drain
75%inclusion3 decks4 decks
48%synergy
Aetherize
75%inclusion3 decks4 decks
47%synergy
High Tide
75%inclusion3 decks4 decks
31%synergy
Pongify
50%inclusion2 decks4 decks
10%synergy
Negate
50%inclusion2 decks4 decks
11%synergy
Reality Shift
50%inclusion2 decks4 decks
22%synergy
Arcane Denial
50%inclusion2 decks4 decks
14%synergy
Counterspell
50%inclusion2 decks4 decks
-17%synergy
Rapid Hybridization
25%inclusion1 decks4 decks
-9%synergy
Muddle the Mixture
25%inclusion1 decks4 decks
9%synergy
An Offer You Can't Refuse
25%inclusion1 decks4 decks
-11%synergy
Flare of Denial
25%inclusion1 decks4 decks
18%synergy
Blink of an Eye
25%inclusion1 decks4 decks
23%synergy
Leadership Vacuum
25%inclusion1 decks4 decks
24%synergy
Strix Serenade
25%inclusion1 decks4 decks
15%synergy
Resculpt
25%inclusion1 decks4 decks
5%synergy
Filter Out
25%inclusion1 decks4 decks
20%synergy
Flow of Knowledge
25%inclusion1 decks4 decks
8%synergy
Thassa's Rebuff
25%inclusion1 decks4 decks
24%synergy
Sink into Stupor
25%inclusion1 decks4 decks
4%synergy
Masterful Replication
25%inclusion1 decks4 decks
24%synergy
Mystic Confluence
25%inclusion1 decks4 decks
15%synergy
Narset's Reversal
25%inclusion1 decks4 decks
13%synergy
Abjure
25%inclusion1 decks4 decks
20%synergy
March of Swirling Mist
25%inclusion1 decks4 decks
17%synergy
Pact of Negation
25%inclusion1 decks4 decks
15%synergy
Sorceries
Distant Melody
50%inclusion2 decks4 decks
45%synergy
Spectral Deluge
50%inclusion2 decks4 decks
39%synergy
Sleight of Hand
25%inclusion1 decks4 decks
22%synergy
Walk the Aeons
25%inclusion1 decks4 decks
23%synergy
Rhythmic Water Vortex
25%inclusion1 decks4 decks
25%synergy
Part the Waterveil
25%inclusion1 decks4 decks
24%synergy
Curse of the Swine
25%inclusion1 decks4 decks
13%synergy
Ancestral Vision
25%inclusion1 decks4 decks
24%synergy
Aquitect's Will
25%inclusion1 decks4 decks
20%synergy
Solve the Equation
25%inclusion1 decks4 decks
11%synergy
Raise the Palisade
25%inclusion1 decks4 decks
22%synergy
Utility Artifacts
Sword of Hearth and Home
50%inclusion2 decks4 decks
48%synergy
Swiftfoot Boots
50%inclusion2 decks4 decks
22%synergy
Sword of the Animist
50%inclusion2 decks4 decks
44%synergy
Bident of Thassa
50%inclusion2 decks4 decks
38%synergy
Sapphire Medallion
50%inclusion2 decks4 decks
-6%synergy
Zephyr Boots
25%inclusion1 decks4 decks
25%synergy
Nettlecyst
25%inclusion1 decks4 decks
22%synergy
Team Pennant
25%inclusion1 decks4 decks
25%synergy
Umezawa's Jitte
25%inclusion1 decks4 decks
25%synergy
Rogue's Gloves
25%inclusion1 decks4 decks
25%synergy
Wayfarer's Bauble
25%inclusion1 decks4 decks
6%synergy
Masterwork of Ingenuity
25%inclusion1 decks4 decks
24%synergy
Leyline Axe
25%inclusion1 decks4 decks
23%synergy
Mantle of Tides
25%inclusion1 decks4 decks
25%synergy
Chariot of Victory
25%inclusion1 decks4 decks
25%synergy
Coat of Arms
25%inclusion1 decks4 decks
23%synergy
Haunted Cloak
25%inclusion1 decks4 decks
24%synergy
Sword of Truth and Justice
25%inclusion1 decks4 decks
24%synergy
Armory of Iroas
25%inclusion1 decks4 decks
25%synergy
Door of Destinies
25%inclusion1 decks4 decks
24%synergy
Fireshrieker
25%inclusion1 decks4 decks
20%synergy
Sanctuary Blade
25%inclusion1 decks4 decks
25%synergy
Sword of War and Peace
25%inclusion1 decks4 decks
24%synergy
Kefnet's Monument
25%inclusion1 decks4 decks
18%synergy
Goldvein Pick
25%inclusion1 decks4 decks
25%synergy
Eldrazi Monument
25%inclusion1 decks4 decks
24%synergy
Lightning Greaves
25%inclusion1 decks4 decks
-1%synergy
Loxodon Warhammer
25%inclusion1 decks4 decks
24%synergy
Blackblade Reforged
25%inclusion1 decks4 decks
20%synergy
Hero's Blade
25%inclusion1 decks4 decks
25%synergy
Forebear's Blade
25%inclusion1 decks4 decks
25%synergy
Aether Vial
25%inclusion1 decks4 decks
25%synergy
Enchantments
Merrow Commerce
75%inclusion3 decks4 decks
74%synergy
Kindred Discovery
50%inclusion2 decks4 decks
43%synergy
Deeproot Pilgrimage
50%inclusion2 decks4 decks
49%synergy
Imprisoned in the Moon
50%inclusion2 decks4 decks
38%synergy
Mystic Remora
50%inclusion2 decks4 decks
22%synergy
Witness Protection
50%inclusion2 decks4 decks
44%synergy
Back to Basics
25%inclusion1 decks4 decks
17%synergy
Curiosity
25%inclusion1 decks4 decks
22%synergy
Aqueous Form
25%inclusion1 decks4 decks
20%synergy
Eldrazi Conscription
25%inclusion1 decks4 decks
24%synergy
Wizard Class
25%inclusion1 decks4 decks
9%synergy
Unable to Scream
25%inclusion1 decks4 decks
21%synergy
Steal Enchantment
25%inclusion1 decks4 decks
24%synergy
Octopus Umbra
25%inclusion1 decks4 decks
24%synergy
Deeproot Waters
25%inclusion1 decks4 decks
24%synergy
Amphibian Downpour
25%inclusion1 decks4 decks
19%synergy
Spreading Seas
25%inclusion1 decks4 decks
24%synergy
Reflections of Littjara
25%inclusion1 decks4 decks
21%synergy
Propaganda
25%inclusion1 decks4 decks
-4%synergy
Planeswalkers
Mu Yanling
25%inclusion1 decks4 decks
25%synergy
Utility Lands
Reliquary Tower
75%inclusion3 decks4 decks
19%synergy
Mystic Sanctuary
50%inclusion2 decks4 decks
-1%synergy
Minamo, School at Water's Edge
25%inclusion1 decks4 decks
13%synergy
Riptide Laboratory
25%inclusion1 decks4 decks
14%synergy
Tolaria West
25%inclusion1 decks4 decks
19%synergy
Scavenger Grounds
25%inclusion1 decks4 decks
18%synergy
Mutavault
25%inclusion1 decks4 decks
24%synergy
Lonely Sandbar
25%inclusion1 decks4 decks
10%synergy
Throne of the High City
25%inclusion1 decks4 decks
25%synergy
Cephalid Coliseum
25%inclusion1 decks4 decks
16%synergy
Castle Vantress
25%inclusion1 decks4 decks
6%synergy
Three Tree City
25%inclusion1 decks4 decks
22%synergy
Rogue's Passage
25%inclusion1 decks4 decks
10%synergy
Mana Artifacts
Sol Ring
100%inclusion4 decks4 decks
14%synergy
Sky Diamond
75%inclusion3 decks4 decks
51%synergy
Caged Sun
50%inclusion2 decks4 decks
38%synergy
Arcane Signet
50%inclusion2 decks4 decks
-15%synergy
Heraldic Banner
50%inclusion2 decks4 decks
44%synergy
Patchwork Banner
50%inclusion2 decks4 decks
47%synergy
Thought Vessel
50%inclusion2 decks4 decks
-2%synergy
Hedron Archive
25%inclusion1 decks4 decks
19%synergy
Sol Talisman
25%inclusion1 decks4 decks
24%synergy
Fractured Powerstone
25%inclusion1 decks4 decks
24%synergy
Springleaf Drum
25%inclusion1 decks4 decks
22%synergy
Mind Stone
25%inclusion1 decks4 decks
-12%synergy
Lands
Island
100%inclusion4 decks4 decks
7%synergy
Myriad Landscape
75%inclusion3 decks4 decks
48%synergy
Path of Ancestry
75%inclusion3 decks4 decks
71%synergy
Opal Palace
25%inclusion1 decks4 decks
24%synergy
Sink into Stupor
25%inclusion1 decks4 decks
4%synergy
Glasspool Mimic
25%inclusion1 decks4 decks
19%synergy
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