Overview:

This Miirym, Sentinel Wyrm deck is a Dragon tribal build focused on explosive value from cloning Dragons via Miirym's triggered ability. The commander enables a swarm of Dragon tokens that amplify enter-the-battlefield (ETB) damage effects like Dragon Tempest and Scourge of Valkas, while also generating combat pressure. Secondary themes include treasure generation for ramp and combat tricks, with a moderate interaction package. Miirym is critical to the strategy, acting as both an engine and force multiplier. The deck struggles to recover if Miirym is repeatedly removed but can pivot to direct damage via ETB triggers.

Primer:

Core Strategy Execution:

1. Early Setup (Turns 1-4): Prioritize ramp (Llanowar Elves, Farseek, Herald's Horn) to cast Miirym by turn 4-5. Use Urza's Incubator or Ruby Medallion to reduce Dragon costs.
2. Miirym Deployment (Turns 4-6): Cast Miirym and protect it with Teferi's Time Twist or Displace. Immediately follow with low-CMC Dragons (e.g., Swashbuckler Extraordinaire, Ganax, Astral Hunter) to generate tokens and treasure.
3. Value Amplification (Turns 5-8): Drop high-impact Dragons like Thrakkus the Butcher (doubles Dragon power) and Atarka, World Render (grants double strike). Use Savage Ventmaw for mana bursts. Activate Dragon Tempest and Scourge of Valkas to burn opponents with ETB triggers.
4. Win Conditions:
   • Combat Overkill: Swing with doubled Dragon tokens (via Thrakkus) and trample enablers.
   • ETB Burn: Chain Dragon casts with Wrathful Red Dragon and Thunderbreak Regent for direct damage.
   • Treasure Synergy: Use Goldspan Dragon and Cavern-Hoard Dragon to fuel Hellkite Charger for extra combats.

Mulligan Priorities:

• Keep hands with 3 lands (including green/blue sources) and 1-2 ramp pieces.
• Prioritize early Miirym enablers: Urza's Incubator, Herald's Horn, or Sakura-Tribe Elder.
• Avoid hands with only high-CMC Dragons and no protection.

Key Tips:

• Use blink effects (Displace, Planar Incision) to dodge removal and duplicate ETB triggers.
• Temur Ascendancy provides haste and critical card draw for gas.
• Blasphemous Act can clear boards while leaving your Dragons alive via Wrathful Red Dragon.

Weaknesses:

Critical

• Commander Dependency: Removing Miirym 2-3 times cripples the deck's cloning engine.
• Board Wipe Vulnerability: Lacks mass recursion; relies on rebuilding from hand.
• Anti-Token Tech: Cursed Totem/Torpor Orb disable key mechanics.

Moderate

• Slow against fast combo decks (limited early interaction).
• Struggles with flyer-heavy metas lacking trample enablers.

Minor

• Treasure synergies are disruptable but not essential.

Most Important Cards:

• Miirym, Sentinel Wyrm (Core engine for token generation)
• Dragon Tempest (Haste enabler + scalable burn)
• Scourge of Valkas (ETB damage amplifier)
• Urza's Incubator (Critical cost reduction)
• Thrakkus the Butcher (Combat damage multiplier)
• Temur Ascendancy (Haste + card draw)
• Savage Ventmaw (Mana acceleration for extra combats)
• Hellkite Charger (Wincon via infinite combats with sufficient mana)
• Wrathful Red Dragon (Punishes removal/board wipes)
• Herald's Horn (Ramp + card advantage)

Attribute Ratings:

Speed: 6/10
Can threaten wins via ETB burn or combat around turns 7-9 but lacks fast mana for earlier explosive plays.

Resilience: 5/10
Limited protection outside blink effects; struggles against repeated removal but has some card draw to rebuild.

Consistency: 6/10
Moderate tutor density (Eldritch Evolution, Neoform) and card draw, but heavily reliant on Miirym surviving.

Interaction: 5/10
Focused on protecting its own board (Stubborn Denial, Negate) with situational removal (Beast Within, Chaos Warp).

Rating Justification:

This deck operates at a 5.0 - 5.5 power level, capable of threatening wins via combat or ETB burns by turns 7-9 with optimized draws. While it has strong synergies and redundancy in Dragons, its reliance on Miirym and vulnerability to common disruption tools keep it below high-power tiers.

Power level: 5.0 - 5.5