Overview:

This Prosper, Tome-Bound deck leverages exile-casting synergies and Treasure token generation to fuel storm-like turns, combo finishes, and incremental damage. Prosper acts as the engine, enabling card advantage and mana acceleration through Treasures. The deck wins via storm payoffs (Tendrils of Agony, Aetherflux Reservoir), Treasure sacrifice loops (Marionette Master, Mirkwood Bats), and value-driven attrition. Hidden commanders like Mayhem Devil and Storm-Kiln Artist amplify damage output and mana generation.

Primer:

Core Strategy Execution:

1. Early Setup (Turns 1-3): Deploy Prosper ASAP, using mana rocks (Sol Ring, Arcane Signet) and exile-cast enablers (Light Up the Stage, Glimpse the Impossible). Prioritize generating Treasures via Prosper's trigger or cards like Magda, Brazen Outlaw.
2. Mid-Game Value (Turns 4-6): Cast high-impact spells from exile (Jeska's Will, Ignite the Future) to chain into combo pieces. Use Bolas's Citadel or Wild-Magic Sorcerer to cascade into free spells. Deploy key damage engines like Reckless Fireweaver or Marionette Master.
3. Win Conditions (Turns 5-8):
   • Storm: Cast 10+ spells in a turn with Storm-Kiln Artist and Birgi, God of Storytelling to fuel Aetherflux Reservoir or Tendrils of Agony.
   • Treasure Sacrifice: Activate Marionette Master (with 4+ power) alongside Xorn and Professional Face-Breaker to drain opponents for 5+ life per Treasure.
   • Infinite Mana: With Storm-Kiln Artist, Birgi, and a spell-loop like Creative Technique, generate infinite red mana to fuel Walking Ballista (not in list) or Comet Storm (not in list) – though this deck relies on existing damage outlets.

Mulligan Priorities:

• Keep hands with Prosper, 2-3 lands, and at least one ramp/early exile effect (e.g., Light Up the Stage, Wishclaw Talisman).
• Prioritize hands with Mayhem Devil, Storm-Kiln Artist, or Reckless Fireweaver if lacking Prosper.
• Avoid hands with only high-CMC spells or no Treasure generation.

Key Tips:

• Use Dauthi Voidwalker to steal opponents’ graveyard threats and disrupt recursion.
• Opposition Agent turns fetch lands and tutors into your own card advantage.
• Passionate Archaeologist turns every exiled spell into direct damage.

Weaknesses:

Critical

• Relies heavily on Prosper staying on board; repeated removal cripples the engine.
• No graveyard recursion for key pieces outside Mortuary Mire and Eternal Witness (not in list).
• Artifact hate (Vandalblast, Collector Ouphe) shuts down Treasure synergies.

Moderate

• Limited board wipes beyond Blasphemous Act; struggles against wide token strategies.
• Storm lines are easily disrupted by counterspells or Rule of Law effects.

Minor

• Low creature count makes combat defense situational.
• Exile-dependent strategy falters against Drannith Magistrate.

Most Important Cards:

• Prosper, Tome-Bound (Engine: card advantage + Treasures)
• Marionette Master (Primary win condition via Treasure sacrifice)
• Storm-Kiln Artist (Mana acceleration + storm enabler)
• Bolas's Citadel (Free spells + life-to-damage conversion)
• Aetherflux Reservoir (Storm payoff)
• Jeska's Will (Burst mana/card advantage)
• Mayhem Devil (Incremental damage + combo piece)
• Birgi, God of Storytelling (Mana generation for storm turns)
• Mirkwood Bats (Treasure/artifact sacrifice payoff)
• Wishclaw Talisman (Tutor for critical pieces)

Attribute Ratings:

Speed: 7/10

• Capable of T5-7 wins via storm or Marionette Master loops with optimal hands, but lacks fast mana for cEDH-level consistency.

Resilience: 5/10

• Limited protection for Prosper or key artifacts; recovery relies on exiling answers.

Consistency: 7/10

• Numerous exile-cast effects and tutors (Gamble, Wishclaw Talisman) ensure access to win conditions.

Interaction: 5/10

• Targeted removal (Terminate, Chaos Warp) is efficient but lacks counterspells to protect combos.

Rating Justification:

This deck threatens T5-7 wins through synergistic combos and storm lines but falters against heavy interaction or stax. Its speed aligns with the 6.5-7.0 tier, though resilience issues prevent higher placement.

Power level: 6.5 - 7.0