Overview:

This Dimir deck helmed by Emet-Selch, Unsundered is a high-octane combo/control hybrid leveraging fast mana, tutors, and efficient interaction to execute the Thassa's Oracle + Demonic Consultation/Tainted Pact win condition. The commander provides incremental value through card selection/graveyard filling and late-game recursion via its Hades transformation. Secondary lines include storming off with Ad Nauseam, Necropotence, or Brain Freeze, supported by artifact synergies (Krark-Clan Ironworks, Emry, Lurker of the Loch) and infinite mana outlets (Walking Ballista).

Primer:

Core Strategy Execution:

1. Early Setup (Turns 1-2): Deploy fast mana (Mana Vault, Mox Opal, Lotus Petal) and value engines (Rhystic Study, Mystic Remora). Use tutors (Demonic Tutor, Vampiric Tutor) to assemble combo pieces or interaction.
2. Midgame (Turns 3-4): Cast Ad Nauseam or Necropotence to draw into win conditions. Alternatively, use Gifts Ungiven/Intuition-like effects to set up graveyard recursion with Mystic Sanctuary/Snapcaster Mage. Activate Hades’ graveyard recursion if transformed.
3. Win Conditions:
   • Primary: Resolve Thassa's Oracle + Demonic Consultation/Tainted Pact (exile library, win on ETB).
   • Secondary: Generate infinite mana via Basalt Monolith + Displacer Kitten (untap loops), then dump into Walking Ballista or Torment of Hailfire.
   • Alternative: Storm with Brain Freeze + Underworld Breach (implicit via recursion) or Aetherflux Reservoir-like effects.

Mulligan Priorities:

• Keep hands with 1-2 lands, fast mana, and at least one tutor/card filter (Brainstorm, Sensei's Divining Top).
• Prioritize blue sources for free counters (Force of Will, Force of Negation).
• Avoid hands lacking early interaction or mana acceleration.

Key Tips:

• Use Mystic Sanctuary to recur key counterspells or tutors.
• Displacer Kitten blinks mana rocks for infinite storm/untap loops.
• Opposition Agent disrupts opponents’ tutors while stealing their win conditions.
• Emergence Zone enables instant-speed Thassa's Oracle to dodge sorcery-speed interaction.

Weaknesses:

Critical

• Relies heavily on resolving a 2-card combo vulnerable to counterspells/Opposition Agent.
• Limited permanent-based removal for resolved hatebears (Drannith Magistrate, Archon of Emeria).

Moderate

• Rule of Law effects severely hamper storm lines and tutor density.
• Life total pressure can disrupt Ad Nauseam/Necropotence lines.

Minor

• Graveyard hate marginally impacts primary win condition but disrupts recursion backups.
• The One Ring/Necropotence life loss can become a liability in prolonged games.

Most Important Cards:

• Thassa's Oracle (Primary win condition)
• Demonic Consultation (Combo enabler)
• Ad Nauseam (Card advantage engine)
• Force of Will (Free interaction)
• Mana Vault (Fast mana acceleration)
• Necropotence (Unrestricted card draw)
• Mystic Remora (Early-game card advantage)
• Demonic Tutor (Tutor for key pieces)
• Mox Opal (Mana acceleration)
• Opposition Agent (Disruption + value)

Attribute Ratings:

Speed: 9/10

• Capable of T1-T3 wins with perfect hands (e.g., T1 Mana Vault + Demonic Consultation + Thassa's Oracle). Consistently threatens T3-T5 wins.

Resilience: 8/10

• Packed with free counterspells, recursion, and redundant tutors. Weak to resolved stax pieces but can often answer them preemptively.

Consistency: 9/10

• 10+ tutors, extensive card selection (Brainstorm, Sensei's Divining Top), and draw engines ensure reliable access to combo pieces.

Interaction: 8/10

• 15+ instant-speed interaction spells (counters/removal), including free options. Lacks board wipes but can disrupt opponents’ combos efficiently.

Rating Justification:

This deck operates at cEDH levels with a T1-T3 win ceiling, backed by robust interaction and unparalleled consistency. Its reliance on a fragile 2-card combo and vulnerability to specific stax keep it just below tier 1.

Power level: 9.0 - 9.5