Overview:

This Ur-Dragon deck is a focused dragon tribal build leveraging cost reduction and combat synergies to deploy massive flying threats. The primary win conditions are overwhelming board presence with dragons, multiple combat phases, and damage-trigger effects from cards like Terror of the Peaks and Scourge of Valkas. While lacking infinite combos, it achieves "effective wins" through explosive mid-game turns powered by The Ur-Dragon's card advantage and mana-cheating eminence ability.

Primer:

Core Strategy:
Ramp into 5-6 mana by turn 4 using land-fetching spells (Cultivate, Farseek) and artifact acceleration (Sol Ring, Arcane Signet). Deploy cost-reduction engines like Urza's Incubator and Morophon, the Boundless to cast game-ending dragons (Atarka, World Render, Ancient Brass Dragon) ahead of curve. Convert The Ur-Dragon's attack triggers into overwhelming card advantage and free permanent deployment. Finish with:

• Combat loops via Savage Ventmaw + Hellkite Charger
• Mass damage from Dragon Tempest/Scourge of Valkas ETB chains
• Klauth, Unrivaled Ancient mana into Omniscience

Mulligan Priorities:

• 3 lands (at least 2 producing colored mana)
• 1-2 ramp pieces (Herald's Horn, Nature's Lore)
• 1 cost-reducer or early dragon (Scaled Nurturer, Dragonlord's Servant)
  Reject hands without ramp or color fixing.

Key Interactions:

• Kindred Discovery + The Ur-Dragon attack triggers = 4+ cards per combat
• Bear Umbra on any dragon enables massive Klauth, Unrivaled Ancient mana generation
• Bladewing the Risen recurring Ancient Brass Dragon creates infinite ETB death triggers with a sac outlet (missing from current list)

Critical Sequencing:
T1-3: Land, ramp, cost reducer
T4: Cast 6-8 MV dragon using eminence/artifact discounts
T5+: Attack with 2+ dragons to draw into more threats, deploy free permanents from The Ur-Dragon's trigger

Weaknesses:

Critical:

• No protection against Cyclonic Rift/Merciless Eviction-style board wipes
• Relies entirely on resolving 5+ MV creatures

Moderate:

• Limited graveyard recursion beyond Bladewing the Risen
• Weak to Blood Moon effects with 12 basic lands

Minor:

• 8 enters-tapped lands slightly slow early development

Most Important Cards:

• Urza's Incubator
• Morophon, the Boundless
• Terror of the Peaks
• Savage Ventmaw
• Hellkite Charger
• Klauth, Unrivaled Ancient
• Scourge of Valkas
• Herald's Horn
• Dragon Tempest
• Kindred Discovery

Attribute Ratings:

Speed: 6/10

• Can deploy 8 MV dragons by turn 5
• No T3-T4 infinite combos, but T6-T7 combat loops are common

Resilience: 5/10

• Eminence provides some redundancy
• Limited counterspells/hexproof effects
• Dies to 2+ board wipes

Consistency: 7/10

• 12 cost reducers/tutors (Sarkhan's Triumph, Herald's Horn)
• Strong card draw from commander/Kindred Discovery

Interaction: 4/10

• 6 targeted removals (Swords to Plowshares, Anguished Unmaking)
• 2 board wipes (Crux of Fate, Magmaquake)
• No countermagic

Rating Justification:

This deck sits between "Optimized Casual" (5.0) and "Focused" (6.0) on the rubric. Its T6-T8 win potential through combat mirrors 5.5-level decks, while the lack of free interaction and vulnerability to common wipes prevents higher ratings. The Ur-Dragon's eminence ability provides cEDH-level mana cheating, but the deck lacks the speed/protection to compete at 7.0+.

Power level: 5.5 - 6.0