Overview:

This 5-color Dragon tribal deck leverages The Ur-Dragon's Eminence ability to deploy massive flying threats at reduced costs, using combat damage as its primary win condition. The deck combines explosive ramp (Mana Crypt, Chrome Mox, 10 fetchlands) with powerful Dragon synergies like Miirym, Sentinel Wyrm token duplication and Scourge of Valkas burn triggers. The Ur-Dragon serves as both a cost reducer and card advantage engine, enabling the deck to refuel while attacking with overwhelming aerial forces. Secondary win paths include Terror of the Peaks/Scourge of Valkas damage amplification and Old Gnawbone treasure-fueled explosive turns.

Primer:

Core Strategy Execution:

1. Early Acceleration (Turns 1-3): Deploy fast mana (Mana Crypt, Sol Ring), cost reducers (Dragonlord's Servant, Herald's Horn), and land-based ramp (Three Visits, Farseek).
2. Midgame Threats (Turns 4-6): Cast discounted Dragons like Miirym, Sentinel Wyrm (creating token copies) or Savage Ventmaw (mana generation). Use Hellkite Courser to cheat The Ur-Dragon into play temporarily for card advantage.
3. Endgame Dominance (Turns 6+): Overwhelm with Dragon swarms enhanced by Atarka, World Render (double strike), Twinflame Tyrant (damage doubling), and Utvara Hellkite (token generation). Leverage Tiamat tutor turns to assemble key Dragons.

Mulligan Priorities:

• Keep hands with 2-3 lands including at least one green source
• Prioritize hands containing cost reducers (Dragonspeaker Shaman) or fast mana (Mana Crypt)
• Ensure access to at least one Dragon payoff (Dragon Tempest, Terror of the Peaks)
• Avoid hands with multiple 6+ CMC Dragons without ramp

Key Tips:

• Use Scion of the Ur-Dragon as a flexible toolbox - copy Ancient Silver Dragon for card draw or Balefire Dragon for board control
• Rivaz of the Claw enables graveyard recursion for key Dragons like Miirym
• Sarkhan, Soul Aflame can become a copy of your best Dragon while maintaining cost reduction
• The World Tree's late-game ability fetches all 5 Ancient Dragons simultaneously

Weaknesses:

Critical

• Extreme vulnerability to board wipes (only Crux of Fate as sweeper protection)
• Heavy reliance on commander's Eminence ability with no way to protect it in command zone
• Limited stack interaction (only Swords to Plowshares and Dragon Tempest for removal)

Moderate

• Struggles against flying hate (Archon of Valor's Reach choosing Dragons)
• Slow recovery from early mana denial (Blood Moon/Back to Basics with only basic fetches)
• Torpor Orb effects nullify ETB triggers from 14 Dragons

Minor

• High-value Dragon targets attract single-target removal
• Limited card draw outside combat triggers
• Some color fixing relies on fragile artifacts (Chromatic Lantern)

Most Important Cards:

• Miirym, Sentinel Wyrm (Token duplication engine)
• The Ur-Dragon (Cost reduction & card advantage)
• Scion of the Ur-Dragon (Flexible Dragon toolbox)
• Terror of the Peaks (Non-combat damage amplifier)
• Mana Crypt (Critical early acceleration)
• Old Gnawbone (Treasure-based mana explosion)
• Sarkhan's Triumph (Key Dragon tutor)
• Utvara Hellkite (Token swarm generator)
• Dragon Tempest (Haste enabler & burn)
• Cavern of Souls (Ensures uncounterable Dragons)

Attribute Ratings:

Speed: 6/10
Can deploy threatening boards by T4-5 with optimal draws, but most wins occur T7-8 through combat.

Resilience: 5/10
Limited protection beyond Lightning Greaves, though Haven of the Spirit Dragon provides some recursion.

Consistency: 7/10
12 cost reducers, 8 tutors, and The Ur-Dragon's draw ability ensure Dragon access.

Interaction: 3/10
Minimal removal beyond 4 targeted spells and combat-based solutions.

Rating Justification:

This deck demonstrates focused Dragon tribal execution with strong ramp and tribal synergy, capable of threatening wins through combat around T7-8. While it lacks the fast combos and interaction of optimized decks, its high density of threats and tutors justify a mid-powered rating.

Power level: 6.0 - 6.5