Mono-blue Merfolk tempo-control built around Namor turning every blue noncreature spell into a swarm of 1/1 Merfolk. Heavy-pip counterspells, card draw and bounce double as token makers, while a deep suite of Merfolk lords and anthems grows the swarm and Namor's own power. Untap effects, tap triggers and convoke let the wide board turn itself into mana, cards and more tokens. How it wins: Flood the board with Merfolk tokens, stack lords and global anthems, then swing past blockers with islandwalk, unblockability or granted flying, often after a one-sided mass bounce clears the way, or close with commander damage from a huge flying Namor. Key roles: - Blue-pip token engine: Counters, draw spells and bounce with many blue symbols in their cost each make several Merfolk when cast through Namor the Sub-Mariner, and cost reducers keep the spell chain cheap. Other cast and counter triggers add still more bodies on top. (Cryptic Command, Geist of Saint Thalia, Lullmage Mentor) - Lords and anthems: Merfolk lords and type-based anthems turn 1/1 tokens into a real army and pump Namor the Sub-Mariner's power alongside them. (Lord of Atlantis, Coat of Arms, Banner of Kinship) - Evasion and finishers: Islandwalk, unblockability and mass flying get the wide board through. Islandwalk is backed by an all-Island mana base and effects that turn opposing lands into Islands. (Deepchannel Mentor, Archetype of Imagination, Harbinger of the Seas) - Tap and untap value loop: Convoke and Springleaf Drum tap the swarm for spells and mana. End-step untaps reset everything to block, and tap triggers spawn further tokens. (Invasion of Segovia, Deeproot Pilgrimage, Merrow Commerce) - Tribal card advantage: Merfolk entering or attacking draws cards, and second-card-drawn triggers make extra tokens, keeping the spell supply flowing. (Kindred Discovery, Attuma, Atlantean Warlord, Daughter of the Deep) - One-sided mass bounce and control: Sweeping bounce spells spare Merfolk and other sea creatures or hit only nonblue creatures. Steal effects and counters protect the board. (Summon: Leviathan, Slinn Voda, the Rising Deep, Inundate)

Namor the Sub-Mariner decklist

• Banner of Kinship
• Coat of Arms
• Lord of Atlantis
• Master of the Pearl Trident
• Merfolk Sovereign
• Merrow Reejerey
• Irenicus's Vile Duplication
• Consign to Memory
• Attuma, Atlantean Warlord
• Emperor Mihail II
• Kindred Discovery
• Kiora, the Rising Tide
• Lórien Revealed
• Meeting of Minds
• Mindspring Merfolk
• Ponder
• Season of Weaving
• Skullclamp
• Svyelun of Sea and Sky
• Unexpected Assistance
• Archetype of Imagination
• Deepchannel Mentor
• Mist Dancer
• Namor, Scourge of the Seas
• River Sneak
• 33× Island
• Mistrise Village
• Mystic Sanctuary
• Hydroelectric Specimen
• Arcane Signet
• Eluge, the Shoreless Sea
• Extraplanar Lens
• Geist of Saint Thalia
• Invasion of Segovia
• Midnight Clock
• Misleading Signpost
• Patchwork Banner
• Sapphire Medallion
• Sol Ring
• Springleaf Drum
• Amphibian Downpour
• An Offer You Can't Refuse
• Archmage's Charm
• Artistic Refusal
• Counterspell
• Cryptic Command
• Flare of Denial
• Harbinger of the Tides
• Imprisoned in the Moon
• Inundate
• Junk Winder
• Lullmage Mentor
• Narset's Reversal
• Perplexing Test
• Press the Enemy
• Reverse the Polarity
• Sink into Stupor
• Slinn Voda, the Rising Deep
• Sublime Epiphany
• Summon: Leviathan
• Swat Away
• Three Steps Ahead
• Tishana's Tidebinder
• Vodalian Hexcatcher
• Wanderwine Farewell
• Harbinger of the Seas
• Empress Galina
• Daughter of the Deep
• Deeproot Pilgrimage
• Deeproot Waters
• Talrand, Sky Summoner
• Merrow Commerce
• Unstoppable Plan