Svyelun of Sea and Sky (Commander) - Optimized

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
41%inclusion7 decks17 decks
41%synergy
Harmonized Crescendo
28%inclusion5 decks18 decks
25%synergy
Disruptor of Currents
17%inclusion3 decks18 decks
16%synergy
Silvergill Mentor
17%inclusion3 decks18 decks
16%synergy
Attuma, Atlantean Warlord
17%inclusion4 decks24 decks
16%synergy
High Synergy Cards
Master of the Pearl Trident
95%inclusion87 decks92 decks
93%synergy
Merrow Reejerey
92%inclusion85 decks92 decks
91%synergy
Emperor Mihail II
87%inclusion80 decks92 decks
86%synergy
Lord of Atlantis
86%inclusion79 decks92 decks
84%synergy
Vodalian Hexcatcher
86%inclusion79 decks92 decks
84%synergy
Kopala, Warden of Waves
85%inclusion78 decks92 decks
83%synergy
Merfolk Sovereign
85%inclusion78 decks92 decks
83%synergy
Harbinger of the Seas
88%inclusion81 decks92 decks
79%synergy
Merrow Commerce
79%inclusion73 decks92 decks
78%synergy
Stonybrook Banneret
80%inclusion74 decks92 decks
77%synergy
Top Cards
Counterspell
78%inclusion72 decks92 decks
12%synergy
Seafloor Oracle
77%inclusion71 decks92 decks
76%synergy
Deeproot Waters
77%inclusion71 decks92 decks
76%synergy
Deeproot Pilgrimage
75%inclusion69 decks92 decks
73%synergy
Sapphire Medallion
74%inclusion68 decks92 decks
16%synergy
Merrow Harbinger
73%inclusion67 decks92 decks
72%synergy
Lullmage Mentor
68%inclusion63 decks92 decks
67%synergy
Thieving Skydiver
68%inclusion63 decks92 decks
64%synergy
Tide Shaper
65%inclusion60 decks92 decks
64%synergy
Bident of Thassa
65%inclusion60 decks92 decks
53%synergy
Game Changers
Rhystic Study
53%inclusion49 decks92 decks
20%synergy
Cyclonic Rift
52%inclusion48 decks92 decks
18%synergy
Fierce Guardianship
42%inclusion39 decks92 decks
19%synergy
Thassa's Oracle
37%inclusion34 decks92 decks
24%synergy
Force of Will
25%inclusion23 decks92 decks
8%synergy
Mystical Tutor
23%inclusion21 decks92 decks
0%synergy
Ancient Tomb
8.7%inclusion8 decks92 decks
-3%synergy
Narset, Parter of Veils
8.7%inclusion8 decks92 decks
-3%synergy
Chrome Mox
5.4%inclusion5 decks92 decks
-4%synergy
Creatures
Tishana's Tidebinder
63%inclusion58 decks92 decks
58%synergy
Deepchannel Mentor
58%inclusion53 decks92 decks
56%synergy
Merfolk Trickster
58%inclusion53 decks92 decks
56%synergy
Mist Dancer
58%inclusion53 decks92 decks
57%synergy
Harbinger of the Tides
57%inclusion52 decks92 decks
55%synergy
True-Name Nemesis
54%inclusion50 decks92 decks
54%synergy
Coralhelm Commander
52%inclusion48 decks92 decks
51%synergy
Wanderwine Prophets
51%inclusion47 decks92 decks
50%synergy
Thada Adel, Acquisitor
49%inclusion45 decks92 decks
47%synergy
Silvergill Adept
49%inclusion45 decks92 decks
48%synergy
Triton Shorestalker
45%inclusion41 decks92 decks
42%synergy
Seahunter
42%inclusion39 decks92 decks
42%synergy
Thassa, God of the Sea
42%inclusion39 decks92 decks
39%synergy
Master of Waves
40%inclusion37 decks92 decks
37%synergy
Mist-Cloaked Herald
39%inclusion36 decks92 decks
37%synergy
Tempest Caller
37%inclusion34 decks92 decks
36%synergy
Rishadan Dockhand
33%inclusion30 decks92 decks
32%synergy
River Sneak
32%inclusion29 decks92 decks
31%synergy
Wake Thrasher
30%inclusion28 decks92 decks
30%synergy
Kiora, the Rising Tide
30%inclusion27 decks91 decks
27%synergy
Empress Galina
29%inclusion27 decks92 decks
28%synergy
Cosi's Trickster
29%inclusion27 decks92 decks
29%synergy
Mindspring Merfolk
28%inclusion25 decks90 decks
27%synergy
Streambed Aquitects
27%inclusion25 decks92 decks
27%synergy
Cursecatcher
26%inclusion24 decks92 decks
25%synergy
Talrand, Sky Summoner
25%inclusion23 decks92 decks
11%synergy
Floodpits Drowner
22%inclusion20 decks92 decks
20%synergy
Roaming Throne
21%inclusion19 decks92 decks
16%synergy
Summon: Leviathan
19%inclusion14 decks75 decks
17%synergy
Glasspool Mimic
18%inclusion17 decks92 decks
12%synergy
Mistcaller
17%inclusion16 decks92 decks
17%synergy
Stormtide Leviathan
15%inclusion14 decks92 decks
8%synergy
Tidal Warrior
15%inclusion14 decks92 decks
15%synergy
Merfolk Looter
15%inclusion14 decks92 decks
13%synergy
Metallic Mimic
14%inclusion13 decks92 decks
13%synergy
Alandra, Sky Dreamer
14%inclusion13 decks92 decks
7%synergy
Sea Scryer
13%inclusion12 decks92 decks
12%synergy
Benthic Biomancer
12%inclusion11 decks92 decks
11%synergy
Tideshaper Mystic
12%inclusion11 decks92 decks
12%synergy
Surgespanner
12%inclusion11 decks92 decks
11%synergy
Shipwreck Dowser
11%inclusion10 decks92 decks
8%synergy
Defiler of Dreams
11%inclusion10 decks92 decks
2%synergy
Sigil Tracer
10%inclusion9 decks92 decks
9%synergy
Library Larcenist
10%inclusion9 decks92 decks
9%synergy
Gray Harbor Merfolk
10%inclusion9 decks92 decks
9%synergy
Titan of Littjara
10%inclusion9 decks92 decks
8%synergy
Tidebinder Mage
10%inclusion9 decks92 decks
9%synergy
Thassa, Deep-Dwelling
10%inclusion9 decks92 decks
6%synergy
Slinn Voda, the Rising Deep
10%inclusion9 decks92 decks
9%synergy
Wonder
8.7%inclusion8 decks92 decks
3%synergy
Instants
High Tide
57%inclusion52 decks92 decks
12%synergy
Negate
48%inclusion44 decks92 decks
10%synergy
Pongify
48%inclusion44 decks92 decks
8%synergy
Rapid Hybridization
47%inclusion43 decks92 decks
12%synergy
Mana Drain
43%inclusion40 decks92 decks
17%synergy
Aetherize
42%inclusion39 decks92 decks
13%synergy
Swan Song
40%inclusion37 decks92 decks
14%synergy
Reality Shift
39%inclusion36 decks92 decks
12%synergy
Brainstorm
35%inclusion32 decks92 decks
-7%synergy
An Offer You Can't Refuse
33%inclusion30 decks92 decks
-4%synergy
Arcane Denial
32%inclusion29 decks92 decks
-5%synergy
Force of Negation
30%inclusion28 decks92 decks
15%synergy
Thassa's Rebuff
30%inclusion28 decks92 decks
29%synergy
Flare of Denial
29%inclusion27 decks92 decks
23%synergy
Sink into Stupor
17%inclusion16 decks92 decks
-4%synergy
Cryptic Command
16%inclusion15 decks92 decks
5%synergy
Flow of Knowledge
16%inclusion15 decks92 decks
0%synergy
Filter Out
16%inclusion15 decks92 decks
12%synergy
Spell Pierce
15%inclusion14 decks92 decks
7%synergy
Frantic Search
14%inclusion13 decks92 decks
-16%synergy
Pact of Negation
14%inclusion13 decks92 decks
4%synergy
Opt
13%inclusion12 decks92 decks
-12%synergy
Archmage's Charm
13%inclusion12 decks92 decks
-4%synergy
Resculpt
13%inclusion12 decks92 decks
-5%synergy
Mana Leak
13%inclusion12 decks92 decks
7%synergy
Dispel
11%inclusion10 decks92 decks
2%synergy
March of Swirling Mist
10%inclusion9 decks92 decks
2%synergy
Cancel
10%inclusion9 decks92 decks
5%synergy
Muddle the Mixture
10%inclusion9 decks92 decks
-6%synergy
Strix Serenade
10%inclusion9 decks92 decks
0%synergy
Engulf the Shore
10%inclusion9 decks92 decks
2%synergy
Unsummon
7.6%inclusion7 decks92 decks
3%synergy
Flusterstorm
7.6%inclusion7 decks92 decks
-2%synergy
Disallow
7.6%inclusion7 decks92 decks
1%synergy
Misdirection
7.6%inclusion7 decks92 decks
2%synergy
Rewind
6.5%inclusion6 decks92 decks
-6%synergy
Snap
6.5%inclusion6 decks92 decks
-12%synergy
Narset's Reversal
6.5%inclusion6 decks92 decks
-6%synergy
Mirrorform
5.6%inclusion1 decks18 decks
2%synergy
Familiar's Ruse
5.4%inclusion5 decks92 decks
4%synergy
Essence Scatter
5.4%inclusion5 decks92 decks
2%synergy
Wash Away
5.4%inclusion5 decks92 decks
1%synergy
Disdainful Stroke
5.4%inclusion5 decks92 decks
1%synergy
Wizard's Retort
5.4%inclusion5 decks92 decks
1%synergy
Mystic Confluence
5.4%inclusion5 decks92 decks
-4%synergy
Unwind
5.4%inclusion5 decks92 decks
-5%synergy
Thassa's Intervention
5.4%inclusion5 decks92 decks
4%synergy
Sorceries
Aquitect's Will
51%inclusion47 decks92 decks
46%synergy
Distant Melody
43%inclusion40 decks92 decks
38%synergy
Ponder
37%inclusion34 decks92 decks
7%synergy
Raise the Palisade
33%inclusion30 decks92 decks
30%synergy
Inundate
23%inclusion21 decks92 decks
21%synergy
Preordain
17%inclusion16 decks92 decks
-7%synergy
Spectral Deluge
16%inclusion15 decks92 decks
6%synergy
Sea Gate Restoration
14%inclusion13 decks92 decks
-1%synergy
Curse of the Swine
14%inclusion13 decks92 decks
3%synergy
Ravenform
14%inclusion13 decks92 decks
5%synergy
Crashing Tide
12%inclusion11 decks92 decks
12%synergy
Rite of Replication
11%inclusion10 decks92 decks
4%synergy
Chart a Course
10%inclusion9 decks92 decks
5%synergy
River's Rebuke
8.7%inclusion8 decks92 decks
5%synergy
Windfall
6.5%inclusion6 decks92 decks
-16%synergy
Consuming Tide
6.5%inclusion6 decks92 decks
3%synergy
Temporal Manipulation
6.5%inclusion6 decks92 decks
3%synergy
Step Through
6.5%inclusion6 decks92 decks
1%synergy
Solve the Equation
5.4%inclusion5 decks92 decks
-7%synergy
Divination
5.4%inclusion5 decks92 decks
4%synergy
Paradigm Shift
5.4%inclusion5 decks92 decks
5%synergy
Walk the Aeons
5.4%inclusion5 decks92 decks
3%synergy
Wash Out
5.4%inclusion5 decks92 decks
0%synergy
Utility Artifacts
Herald's Horn
38%inclusion35 decks92 decks
36%synergy
Kefnet's Monument
29%inclusion27 decks92 decks
23%synergy
Vanquisher's Banner
28%inclusion26 decks92 decks
27%synergy
Quicksilver Fountain
25%inclusion23 decks92 decks
23%synergy
Lightning Greaves
25%inclusion23 decks92 decks
-1%synergy
Swiftfoot Boots
24%inclusion22 decks92 decks
-4%synergy
Door of Destinies
22%inclusion20 decks92 decks
21%synergy
Coat of Arms
15%inclusion14 decks92 decks
14%synergy
Banner of Kinship
11%inclusion10 decks91 decks
8%synergy
Winter Moon
8.7%inclusion8 decks92 decks
4%synergy
Sword of the Animist
8.7%inclusion8 decks92 decks
3%synergy
Aether Vial
8.7%inclusion8 decks92 decks
8%synergy
Icon of Ancestry
7.6%inclusion7 decks92 decks
7%synergy
Wayfarer's Bauble
7.6%inclusion7 decks92 decks
-10%synergy
Commander's Plate
7.6%inclusion7 decks92 decks
3%synergy
Stoneforge Masterwork
5.4%inclusion5 decks92 decks
5%synergy
Urza's Incubator
5.4%inclusion5 decks92 decks
4%synergy
Enchantments
Kindred Discovery
59%inclusion54 decks92 decks
52%synergy
Reflections of Littjara
45%inclusion41 decks92 decks
41%synergy
Spreading Seas
35%inclusion32 decks92 decks
34%synergy
Mystic Remora
28%inclusion26 decks92 decks
1%synergy
Reconnaissance Mission
21%inclusion19 decks92 decks
14%synergy
Propaganda
20%inclusion18 decks92 decks
-11%synergy
Wizard Class
20%inclusion18 decks92 decks
3%synergy
Imprisoned in the Moon
18%inclusion17 decks92 decks
6%synergy
Back to Basics
14%inclusion13 decks92 decks
7%synergy
Intruder Alarm
13%inclusion12 decks92 decks
10%synergy
Eaten by Piranhas
10%inclusion9 decks92 decks
7%synergy
Coastal Piracy
10%inclusion9 decks92 decks
5%synergy
Witness Protection
8.7%inclusion8 decks92 decks
3%synergy
Aquatic Incursion
8.7%inclusion8 decks92 decks
8%synergy
Military Intelligence
7.6%inclusion7 decks92 decks
6%synergy
Leyline of Anticipation
7.6%inclusion7 decks92 decks
-2%synergy
Frogify
6.5%inclusion6 decks92 decks
5%synergy
Omniscience
6.5%inclusion6 decks92 decks
-2%synergy
Sea's Claim
6.5%inclusion6 decks92 decks
6%synergy
Unable to Scream
5.4%inclusion5 decks92 decks
2%synergy
Teferi's Ageless Insight
5.4%inclusion5 decks92 decks
-12%synergy
Curiosity
5.4%inclusion5 decks92 decks
3%synergy
Amphibian Downpour
5.4%inclusion5 decks92 decks
0%synergy
Planeswalkers
Teferi, Master of Time
5.4%inclusion5 decks92 decks
0%synergy
Utility Lands
Mystic Sanctuary
63%inclusion58 decks92 decks
13%synergy
Reliquary Tower
62%inclusion57 decks92 decks
6%synergy
Nykthos, Shrine to Nyx
41%inclusion38 decks92 decks
25%synergy
Castle Vantress
33%inclusion30 decks92 decks
14%synergy
Otawara, Soaring City
30%inclusion28 decks92 decks
5%synergy
Three Tree City
28%inclusion26 decks92 decks
25%synergy
Halimar Depths
27%inclusion25 decks92 decks
17%synergy
Mutavault
21%inclusion19 decks92 decks
20%synergy
Rogue's Passage
20%inclusion18 decks92 decks
4%synergy
Lonely Sandbar
17%inclusion16 decks92 decks
3%synergy
Minamo, School at Water's Edge
15%inclusion14 decks92 decks
3%synergy
War Room
13%inclusion12 decks92 decks
-3%synergy
Riptide Laboratory
13%inclusion12 decks92 decks
3%synergy
Rivendell
12%inclusion11 decks92 decks
1%synergy
Hall of Storm Giants
10%inclusion9 decks92 decks
7%synergy
Scavenger Grounds
8.7%inclusion8 decks92 decks
1%synergy
Svyelunite Temple
7.6%inclusion7 decks92 decks
7%synergy
Maze of Ith
6.5%inclusion6 decks92 decks
2%synergy
Coral Atoll
6.5%inclusion6 decks92 decks
3%synergy
Temple of the False God
6.5%inclusion6 decks92 decks
-4%synergy
Academy Ruins
5.4%inclusion5 decks92 decks
-13%synergy
Mana Artifacts
Sol Ring
86%inclusion79 decks92 decks
1%synergy
Arcane Signet
49%inclusion45 decks92 decks
-16%synergy
Thought Vessel
46%inclusion42 decks92 decks
-6%synergy
Patchwork Banner
23%inclusion21 decks92 decks
19%synergy
Sky Diamond
20%inclusion18 decks92 decks
-4%synergy
Mind Stone
18%inclusion17 decks92 decks
-17%synergy
Heraldic Banner
15%inclusion14 decks92 decks
9%synergy
Nyx Lotus
14%inclusion13 decks92 decks
10%synergy
White Lotus Tile
10%inclusion4 decks42 decks
9%synergy
Caged Sun
8.7%inclusion8 decks92 decks
-3%synergy
Decanter of Endless Water
7.6%inclusion7 decks92 decks
-7%synergy
Mox Amber
5.4%inclusion5 decks92 decks
-2%synergy
Midnight Clock
5.4%inclusion5 decks92 decks
-15%synergy
Gauntlet of Power
5.4%inclusion5 decks92 decks
1%synergy
Throne of Eldraine
5.4%inclusion5 decks92 decks
-4%synergy
Lands
Island
96%inclusion88 decks92 decks
2%synergy
Path of Ancestry
39%inclusion36 decks92 decks
35%synergy
Cavern of Souls
38%inclusion35 decks92 decks
33%synergy
Myriad Landscape
21%inclusion19 decks92 decks
-5%synergy
Glasspool Mimic
18%inclusion17 decks92 decks
12%synergy
Sink into Stupor
17%inclusion16 decks92 decks
-4%synergy
Sea Gate Restoration
14%inclusion13 decks92 decks
-1%synergy
Snow-Covered Island
7.6%inclusion7 decks92 decks
0%synergy
Flooded Strand
7.6%inclusion7 decks92 decks
-1%synergy
Terramorphic Expanse
6.5%inclusion6 decks92 decks
3%synergy
Evolving Wilds
6.5%inclusion6 decks92 decks
2%synergy
Command Tower
5.4%inclusion5 decks92 decks
1%synergy
Misty Rainforest
5.4%inclusion5 decks92 decks
-2%synergy
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