Overview:

This Derevi stax/combo deck leverages the commander's untap ability to break parity on Winter Orb/Static Orb effects while assembling infinite mana combos with Isochron Scepter/Dramatic Reversal or Seedborn Muse. The deck can win via Thassa's Oracle using Urza's library exile or combat damage through stax locks. Packed with free interaction, fast mana, and cEDH staples, it operates at near-competitive EDH tier power.

Primer:

Core Strategy:

1. Early Game: Deploy fast mana (Mana Vault, Sol Ring) and stax pieces (Winter Orb, Trinisphere) to disrupt opponents while developing Derevi through its commander tax avoidance.
2. Mid Game: Use Seedborn Muse/Seedborn Muse + Derevi to untap permanents each turn, powering through stax effects. Tutor for Isochron Scepter + Dramatic Reversal or Freed from the Real + Bloom Tender combos.
3. Win Conditions:
   • Infinite mana → Cast entire library via Urza, then Thassa's Oracle
   • Stax lock (Winter Orb + Seedborn Muse + Derevi) → Beatdown with evasive creatures
   • Dramatic Reversal + Isochron Scepter → Infinite storm → Walking Ballista

Key Interactions:

• Seedborn Muse enables untapping Derevi/stax artifacts during each player's turn
• Isochron Scepter + Dramatic Reversal with 3+ mana rocks = infinite mana
• Freed from the Real on Bloom Tender/Faeburrow Elder = infinite colored mana
• Urza, Lord High Artificer converts artifacts into mana sinks to exile library for Oracle

Mulligan Priorities:

1. Keep hands with 2+ mana sources including a blue source
2. Prioritize T1 mana accelerant + T2 stax piece/Derevi
3. Reject hands without early interaction or mana development

Protection Lines:

• Grand Abolisher + Dovin's Veto shields combo turns
• Veil of Summer protects against black/blue disruption
• Free counterspells (Force of Will, Fierce Guardianship) defend critical plays

Weaknesses:

Critical:

• Relies on artifact mana base (vulnerable to Collector Ouphe)
• Thassa's Oracle requires precise sequencing without Consultation effects

Moderate:

• Limited graveyard recursion for combo pieces
• Some stax pieces hinder own strategy if Derevi is removed

Minor:

• High life payment cards (Ancient Tomb) in prolonged games

Most Important Cards:

• Seedborn Muse
• Isochron Scepter
• Winter Orb
• Urza, Lord High Artificer
• Thassa's Oracle
• Gaea's Cradle
• Dramatic Reversal
• Force of Will
• Survival of the Fittest
• Mana Vault

Attribute Ratings:

Speed: 9/10

• T2-T3 wins possible with perfect hands (Mana Vault → T2 Isochron Scepter combo)
• Average goldfish win by T4

Resilience: 8/10

• 10+ free interaction spells
• Multiple redundant combo lines
• Weak to artifact/enchantment hate

Consistency: 9/10

• 14 tutors including Transmute Artifact/Intuition
• 5+ card draw engines (Rhystic Study, Mystic Remora)
• Redundant stax effects

Interaction: 10/10

• S-Tier: Force of Will, Fierce Guardianship, Pact of Negation
• A-Tier: Swan Song, Flusterstorm, Dovin's Veto
• Stax-based interaction through Winter Orb/Trinisphere

Rating Justification:

This deck operates at cEDH Tier 2 levels (rubric 9.0) due to:

1. Turn 2-3 win potential with protection
2. Multiple overlapping stax/combo paths
3. cEDH-optimized interaction suite
4. Slightly slower than Turbo Naus decks but more resilient

Power level: 9.0 - 9.5