Overview:

This Miirym, Sentinel Wyrm deck is a Dragon tribal build leveraging token duplication for explosive value. The commander amplifies every Dragon ETB by creating nonlegendary copies, enabling massive board states through cards like Utvara Hellkite and Lathliss, Dragon Queen. Secondary win conditions include direct damage via Terror of the Peaks/Scourge of Valkas, infinite combat with Aggravated Assault + Savage Ventmaw, and planeswalker ultimatums (e.g., Sarkhan Unbroken). Miirym is critical to the strategy, reducing the need for traditional card advantage by doubling Dragon value, though its 6 CMC and reliance on board presence make it vulnerable to removal.

Primer:

Core Strategy Execution:

1. Early Setup (Turns 1-4): Deploy cost reducers (Urza's Incubator, Dragonspeaker Shaman), ramp (Birds of Paradise, Somberwald Sage), and setup pieces like Parallel Lives/Doubling Season.
2. Commander Deployment (Turns 4-5): Cast Miirym with protection (Deflecting Swat, Ward 2) to enable token doubling. Prioritize Dragons with immediate impact: Ancient Copper Dragon (Treasure burst), Terror of the Peaks (damage triggers), or Roaming Throne (double triggers).
3. Value Engine Activation (Turns 5+): Chain Dragon ETBs with token doublers to flood the board. Use Klauth, Unrivaled Ancient or Savage Ventmaw to fuel massive spells like Dragonstorm or Will of the Temur.
4. Win Conditions:
   • Combat Overkill: Swing with exponentially growing Dragon armies (Thrakkus the Butcher doubles power, Twinflame Tyrant doubles damage).
   • Infinite Combat: Aggravated Assault + Savage Ventmaw for unlimited attack phases.
   • Burn: Scourge of Valkas/Terror of the Peaks with token spam.

Mulligan Priorities:

• Keep hands with 3+ lands (prioritize color-fixing like Cavern of Souls).
• Ensure early ramp (Birds of Paradise, Orb of Dragonkind) or cost reducers.
• Look for at least one Dragon with immediate impact (e.g., Ancient Copper Dragon, Ganax, Astral Hunter).
• Avoid hands lacking ramp or with only high-CMC Dragons.

Key Tips:

• Use Roaming Throne (naming Dragon) to double Miirym’s token triggers and other Dragon ETBs.
• Reflections of Littjara copies Dragon spells for additional token generation.
• Protect Miirym with Deflecting Swat and Fierce Guardianship—losing it stalls the engine.
• Dragon Tempest gives haste and scales damage with Dragon count.

Weaknesses:

Critical

• Board wipes (e.g., Blasphemous Act, Toxic Deluge) cripple the board-dependent strategy.
• Torpor Orb effects nullify ETB damage from Terror of the Peaks and clone triggers from Miirym.
• Enchantment removal targeting Doubling Season/Parallel Lives halves token output.

Moderate

• Countermagic on key Dragons or Miirym delays the engine.
• Graveyard hate disrupts recursion via Haven of the Spirit Dragon/Bala Ged Recovery.
• Artifact destruction removes critical mana sources (Urza's Incubator, Dragon's Hoard).

Minor

• Single-target removal is mitigated by token redundancy.
• Stax pieces like Blood Moon minimally impact the mana base.

Most Important Cards:

• Miirym, Sentinel Wyrm (Core engine for token duplication)
• Utvara Hellkite (Exponential Dragon token generation)
• Parallel Lives/Doubling Season (Doubles token output)
• Terror of the Peaks (Burn win condition)
• Aggravated Assault + Savage Ventmaw (Infinite combat combo)
• Ancient Copper Dragon (Mana acceleration)
• Roaming Throne (Doubles Dragon triggers)
• Klauth, Unrivaled Ancient (Mana for explosive turns)
• Fierce Guardianship (Protection for critical spells)
• Urza's Incubator (Cost reduction for Dragons)

Attribute Ratings:

Speed: 7/10

• Can threaten lethal via combat or combo by turns 6-7 with ideal ramp, but high average CMC slows early aggression.

Resilience: 5/10

• Limited protection beyond a few free counterspells; struggles to rebuild after board wipes.

Consistency: 7/10

• Multiple tutors (Sarkhan's Triumph, Magda, Brazen Outlaw) and card draw (The One Ring, Dragon's Hoard) ensure Dragon access.

Interaction: 5/10

• Spot removal (Beast Within, Chaos Warp) and countermagic (Fierce Guardianship) are present but sparse.

Rating Justification:

This deck operates as a focused Dragon tribal build with explosive token synergies and a T6-7 win potential via combat or combo. While it lacks the speed and resilience of cEDH decks, its consistency and high ceiling place it above casual tiers.

Power level: 6.5 - 7.0