The Exponential Echo

Miirym, Sentinel Wyrm Commander Deck

Miirym, Sentinel Wyrm is the engine of this deck, doubling every nontoken Dragon that enters the battlefield and creating a cascading flood of Dragon tokens that grow increasingly dangerous with each new addition. The deck leverages cost-reduction effects, mana dorks, and combat-triggered mana production to deploy massive Dragons ahead of schedule, while damage amplifiers like Terror of the Peaks and Scourge of Valkas turn each entering Dragon into direct damage scaled to the size of the growing horde. The deck wins primarily through combat with an overwhelming army of doubled Dragons, or by assembling infinite combat phase loops using Savage Ventmaw or Old Gnawbone paired with Aggravated Assault or Hellkite Charger to generate unlimited damage.

Decklist

• Ancient Copper Dragon
• Bear Umbra
• Bloodstained Mire
• Breeding Pool
• Cavern of Souls
• Deflecting Swat
• Dragonspeaker Shaman
• Fierce Guardianship
• 3× Forest
• Goreclaw, Terror of Qal Sisma
• Guardian Project
• Haven of the Spirit Dragon
• Hellkite Charger
• Hinterland Harbor
• Kindred Discovery
• Lathliss, Dragon Queen
• Maelstrom of the Spirit Dragon
• Mana Drain
• Otawara, Soaring City
• Rejuvenating Springs
• Rhythm of the Wild
• Sarkhan, Soul Aflame
• Sneak Attack
• Selvala, Heart of the Wilds
• Stormcarved Coast
• Temur Ascendancy
• Terror of the Peaks
• The Great Henge
• Three Tree City
• Three Visits
• Training Center
• Ureni of the Unwritten
• Urza's Incubator
• Llanowar Elves
• Talisman of Impulse
• Somberwald Sage
• Dragon's Hoard
• Skyshroud Claim
• Seedborn Muse
• Scourge of the Throne
• Aggravated Assault
• Birds of Paradise
• Bloom Tender
• Cascade Bluffs
• Command Tower
• Arcane Signet
• Arid Mesa
• Dragon Tempest
• Cyclonic Rift
• Exotic Orchard
• Utvara Hellkite
• Worldly Tutor
• Wooded Foothills
• Stomping Ground
• Steam Vents
• Scourge of Valkas
• Spire Garden
• Spirebluff Canal
• Sol Ring
• Rootbound Crag
• Scalding Tarn
• Savage Ventmaw
• Swiftfoot Boots
• Sulfur Falls
• Panharmonicon
• Old Gnawbone
• Nature's Lore
• 4× Mountain
• Misty Rainforest
• Mistrise Village
• Klauth, Unrivaled Ancient
• Kindred Summons
• Ketria Triome
• 3× Island
• Heroic Intervention
• Garruk's Uprising
• Finale of Devastation
• Fellwar Stone
• Adrix and Nev, Twincasters
• Counterspell
• Twinflame Tyrant
• Goldspan Dragon
• Sylvan Library
• Mox Jasper
• Fyndhorn Elves
• Farseek
• Tireless Provisioner
• Jeska's Will
• Dragonborn Champion
• Sarkhan's Triumph
• Magda, Brazen Outlaw
• Roaming Throne