Overview:

This Isshin, Two Heavens as One deck focuses on doubling attack-triggered abilities through extra combat phases and combo finishes. It leverages aggressive creature synergies, stax elements, and multiple infinite combos to overwhelm opponents. While packing tutors and fast mana, its reliance on three-card combos and vulnerability to disruption keep it below cEDH tiers.

Primer:

Core Strategy:
The deck aims to deploy Isshin by turns 2-3 using fast mana (e.g., Sol Ring, Mox Amber), then abuse attack triggers for value and combo wins. Key lines include:

1. Extra Combats: Aurelia, the Warleader + Isshin generates 4 combat phases. Helm of the Host on Combat Celebrant creates infinite combat loops.
2. Infinite Damage: Murderous Redcap + Solemnity + Goblin Bombardment loops for infinite ETB damage.
3. Stax Lockdown: Blind Obedience/Authority of the Consuls + Ghostly Prison slows opponents while assembling wins.

Mulligan Priorities:

• 3 lands (prioritize untapped)
• 1-2 ramp pieces (artifact > ritual)
• At least 1 enabler (attack trigger creature/tutor)
  Reject hands without early Isshin deployment or protection.

Key Tips:

• Sequence stax before combos - Solemnity before Redcap
• Use Underworld Breach to recur critical combo pieces
• Tutor prioritization: Demonic Tutor > combo enablers > protection
• The Meathook Massacre doubles as a board wipe and life-drain engine

Avoid Traps:

• Overextending creatures pre-wipe
• Holding interaction instead of advancing board state
• Slow lands (e.g., Sundown Pass) in opening hands

Weaknesses:

Critical:

• No free counterspells to protect combos
• Solemnity combo requires 3 pieces with limited redundancy

Moderate:

• Weak to enchantment removal (key to 2 combos)
• Limited card advantage engines

Minor:

• Basic-heavy mana base soft to Blood Moon

Most Important Cards:

• Solemnity
• Murderous Redcap
• Helm of the Host
• Underworld Breach
• Demonic Tutor
• Goblin Bombardment
• Combat Celebrant
• Smothering Tithe
• Blind Obedience
• The Meathook Massacre

Attribute Ratings:

Speed: 7/10
Theoretical T4-T5 wins with perfect hands (e.g., T2 Isshin into T3 Combat Celebrant + T4 Helm of the Host). Average goldfish win ~T7.

Resilience: 5/10
Limited protection outside Bastion Protector. Recursion via Reanimate/Breach helps but folds to exile effects.

Consistency: 6/10
9 tutors (including Varragoth, Bloodsky Sire) but 3-card combos reduce reliability. Strong draw in combat phases.

Interaction: 5/10
Efficient removal (Swords to Plowshares, Damnation) but lacks stack interaction. Reactive rather than proactive.

Rating Justification:

This deck exceeds optimized casual (5.5) through combo potential and tutors but lacks the speed/protection of focused competitive (7.0+). Its T7 average win with moderate resilience aligns with Rubric 6.0 ("Focused - T7-8 via combos"). Stax elements and multiple win paths push it toward 6.5 thresholds in slower metas.

Power level: 6.0 - 6.5