The deck centers on Captain Storm, Cosmium Raider, using a swarm of Pirates that generate Treasure tokens to trigger the commander's ability and rapidly stack +1/+1 counters across the board. Treasure production is the engine of the deck, fueling both mana acceleration and repeated artifact-enters triggers, while payoffs like Ingenious Artillerist and Reckless Fireweaver convert those artifact entries into direct damage. The deck wins by overwhelming opponents with a wide, growing Pirate board backed by consistent chip damage from treasure generation and combat pressure amplified through cards that reward attacking and stealing creatures.

Captain Storm, Cosmium Raider decklist

• Negate
• Izzet Guildgate
• 8× Mountain
• 6× Island
• Hornswoggle
• Protean Raider
• Pirate's Pillage
• Slippery Scoundrel
• Lookout's Dispersal
• Prying Blade
• Siren's Ruse
• Izzet Boilerworks
• Azure Fleet Admiral
• Fiery Cannonade
• Impulsive Pilferer
• Seize the Spoils
• Maestros Theater
• Sticky Fingers
• Ingenious Artillerist
• Cryptic Spires
• Beamtown Beatstick
• Collector's Vault
• Breeches, Eager Pillager
• Fiery Islet
• Frostboil Snarl
• Spyglass Siren
• Treasure Map
• Arcane Signet
• The Belligerent
• Kitesail Larcenist
• Enterprising Scallywag
• Magmatic Galleon
• Diamond Pick-Axe
• Corsair Captain
• Captivating Crew
• Coercive Recruiter
• Gemcutter Buccaneer
• Malcolm, Keen-Eyed Navigator
• Port Razer
• Secluded Courtyard
• Siren Stormtamer
• Storm Fleet Negotiator
• The Indomitable
• Thriving Isle
• Unclaimed Territory
• Zara, Renegade Recruiter
• Gleaming Geardrake
• Crime Novelist
• Library
• Detective's Satchel
• Silverbluff Bridge
• Double Down
• Malcolm, the Eyes
• Reckless Lackey
• Breeches, the Blastmaker
• Captain Lannery Storm
• Academy Manufactor
• Mary Read and Anne Bonny
• Bident of Thassa
• Thriving Bluff
• Brass's Bounty
• Goldvein Pick
• Reckless Fireweaver
• Terramorphic Expanse
• Command Tower
• Swiftwater Cliffs
• Exotic Orchard
• Abrade
• Prismari Command
• Izzet Signet
• Evolving Wilds
• Sulfur Falls
• Path of Ancestry
• Temple of Epiphany
• Helm of the Host
• Hellkite Tyrant
• Mechanized Production
• Glint-Horn Buccaneer
• 2× Professional Face-Breaker
• Xorn
• Goldspan Dragon
• Chaos Warp
• Chain Reaction
• Trash for Treasure
• Reality Shift
• Temporal Mastery