Miirym, Sentinel Wyrm is the engine of this deck, doubling every nontoken Dragon that enters by creating a free token copy, rapidly flooding the board with massive flying threats. The deck accelerates into this gameplan through cost reduction for Dragon spells, mana ramp, and enchantments that generate card advantage whenever large creatures enter or attack, while blink effects and clone spells pile on even more enter-the-battlefield triggers. The primary win conditions involve casting a kicked Rite of Replication targeting a Dragon with a damage-on-entry trigger like Scourge of Valkas or Terror of the Peaks, unleashing a cascade of lethal damage across the table as each copy triggers off the others entering simultaneously.

Miirym, Sentinel Wyrm decklist

• Astral Dragon
• Bloom Tender
• Bonehoard Dracosaur
• Chomping Changeling
• Clever Impersonator
• Deceptive Frostkite
• Dragon Broodmother
• Dragonhawk, Fate's Tempest
• Dragonlord's Servant
• Dragonspeaker Shaman
• Earthquake Dragon
• Ganax, Astral Hunter
• Glasspool Mimic
• Klauth, Unrivaled Ancient
• Kolaghan Warmonger
• Lathliss, Dragon Queen
• Niv-Mizzet, Parun
• Omni-Changeling
• Reckless Barbarian
• Roaming Throne
• Sakashima of a Thousand Faces
• Sarkhan, Soul Aflame
• Scourge of Valkas
• Spark Double
• Terror of the Peaks
• Thrakkus the Butcher
• Ureni of the Unwritten
• Wrathful Red Dragon
• Arcane Signet
• Cursed Mirror
• Mirror of Life Trapping
• Orb of Dragonkind
• Sol Ring
• Talisman of Creativity
• Talisman of Impulse
• Beast Within
• Chaos Warp
• Cyclonic Rift
• Displace
• Essence Flux
• Ghostly Flicker
• Heroic Intervention
• Kindred Summons
• Klauth's Will
• Magmaquake
• Stubborn Denial
• Blasphemous Act
• Farseek
• Genesis Ultimatum
• Nature's Lore
• Rishkar's Expertise
• Rite of Replication
• Three Visits
• Defense of the Heart
• Dracogenesis
• Dragon Tempest
• Elemental Bond
• Frontier Siege
• Greater Good
• Kindred Discovery
• Reflections of Littjara
• Rhythm of the Wild
• Temur Ascendancy
• Breeding Pool
• Command Tower
• Commercial District
• Dreamroot Cascade
• Exotic Orchard
• 3× Forest
• Haven of the Spirit Dragon
• Hedge Maze
• Hinterland Harbor
• 2× Island
• Karplusan Forest
• Maelstrom of the Spirit Dragon
• Misty Rainforest
• Mosswort Bridge
• 3× Mountain
• Rejuvenating Springs
• Rockfall Vale
• Rootbound Crag
• Scalding Tarn
• Secluded Courtyard
• Shivan Reef
• Spire Garden
• Steam Vents
• Stomping Ground
• Stormcarved Coast
• Sulfur Falls
• Temple of the Dragon Queen
• Thundering Falls
• Training Center
• Wooded Foothills
• Yavimaya Coast