Overview:

This Niv-Mizzet, Parun deck is a high-octane combo-control build leveraging the commander’s card-draw synergy with instant/sorcery density, infinite-damage loops, and cEDH-grade acceleration. The deck consistently threatens T3–4 wins via Curiosity-type combos or Isochron Scepter/Dramatic Reversal mana loops, backed by free interaction and 10+ tutors. Its resilience stems from redundant combo lines, extreme stack control, and wheel effects to rebuild.

Primer:

Core Strategy:
Deploy Niv-Mizzet as a card-draw engine or combo finisher, using UR’s best rituals, counterspells, and tutors to assemble one of three primary lines:

1. Infinite Damage: Attach Curiosity, Ophidian Eye, or Tandem Lookout to Niv-Mizzet, creating a draw/damage loop.
2. Dramatic Scepter: Generate infinite mana with Isochron Scepter imprinting Dramatic Reversal, then cast Niv-Mizzet and draw the deck.
3. Wheel Lock: Pair Narset, Parter of Veils or Notion Thief with Wheel of Fortune-effects to strip opponents’ resources.

Mulligan Priorities:

• Keep hands with 2+ mana sources (including fast mana like Mox Diamond/Chrome Mox).
• Prioritize T1–2 plays that enable T3 combos: tutors (Mystical Tutor, Gamble), accelerants (Mana Vault), or protection (Force of Will).
• Reject slow hands lacking early interaction or combo enablers.

Key Tips:

• Sequence Aggressively: Use Transmute Artifact/Intuition to fetch missing combo pieces. Windfall refuels while disrupting opponents.
• Protect Critical Turns: Hold free counters (Force of Negation, Deflecting Swat) for combo attempts or opposing stax.
• Leverage Redundancy: Three Curiosity effects and multiple mana loops ensure backup plans.

Avoid Traps:

• Overcommitting Niv-Mizzet without protection.
• Wasting tutors on non-critical pieces early.

Weaknesses:

• Critical: Dies to Cursed Totem/Drannith Magistrate shutting off key lines.
• Moderate: Struggles against T1 Rule of Law-effects without immediate answers.
• Minor: High life payment from fast mana can be risky in aggro metas.

Most Important Cards:

• Curiosity
• Dramatic Reversal
• Isochron Scepter
• Mana Vault
• Force of Will
• Mystical Tutor
• Transmute Artifact
• Wheel of Fortune
• Rhystic Study
• The One Ring

Attribute Ratings:

Speed: 9.5/10

• T1–2 wins possible with perfect hands (e.g., T1 Mana Crypt → T2 Scepter/Reversal + Niv-Mizzet). Average T3–4 goldfish.

Resilience: 9/10

• 12 free/low-cost counterspells, 10+ tutors, and 3+ redundant combo lines. Recovers via wheels if disrupted.

Consistency: 9/10

• 9 tutors and 8+ draw engines (Mystic Remora, The One Ring) ensure combo access.

Interaction: 10/10

• 16 instant-speed answers including S-tier Force of Will, Fierce Guardianship, and Cyclonic Rift.

Rating Justification:

This deck meets cEDH Tier 1 benchmarks with T1–2 win potential, redundant combos, and interaction density surpassing most “high power” builds. It falters slightly against T0 “Turbo” decks but outpaces most stax strategies. The presence of Timetwister loops and Mox Opal acceleration pushes it toward the 9.5 tier, though it lacks the absolute speed of T0 all-in combos like Codie/Ad Nauseam.

Power level: 9.0–9.5