Overview:

This Commodore Guff deck focuses on planeswalker synergy, leveraging loyalty counter manipulation and proliferate effects to accelerate ultimates while using defensive tools to protect its value engines. The strategy combines incremental value from planeswalker abilities with explosive turns enabled by doubling effects like Deepglow Skate and Spark Double, aiming to win through either overwhelming card advantage/damage from Guff's -3 ability or planeswalker ultimates.

Primer:

Core Strategy:
This deck seeks to establish multiple planeswalkers early, using Commodore Guff's loyalty acceleration and token generation to maintain board presence. Key phases include:

1. Early Setup: Deploy mana rocks (Arcane Signet, signets) and defensive creatures (Wall of Denial, Fog Bank) to protect planeswalker development.
2. Midgame Proliferation: Use Flux Channeler, Thrummingbird, and Karn's Bastion to rapidly increase loyalty counters while deploying high-impact planeswalkers like Elspeth, Sun's Champion and Chandra, Torch of Defiance.
3. Finishing Moves: Activate Guff's -3 ability with 4+ planeswalkers for massive card draw/damage or leverage ultimates like Ajani Steadfast's damage prevention emblem. Backup plans include Blasphemous Act clears followed by planeswalker rebuilding.

Mulligan Priorities: 3+ lands with color flexibility

• At least 1 ramp artifact
• Early defensive creature or planeswalker
  Avoid hands lacking planeswalker protection or mana fixing.

Key Tips:

• Sequence planeswalkers to maximize Guff's end-step loyalty counter distribution
• Use Semester's End to protect key permanents while boosting loyalty
• Prioritize Oath of Teferi for double activations of critical planeswalkers

Avoid Traps:

• Overextending planeswalkers without protection
• Holding proliferate effects for maximum counter doubling opportunities
• Wasting removal on minor threats when planeswalker defense is paramount

Weaknesses:

Critical:

• Vulnerable to wide creature swarms bypassing defensive walls
• Limited instant-speed interaction for stack-based threats

Moderate:

• Relies on maintaining 3+ planeswalkers for optimal Guff payoff
• Slow recovery from mass artifact/enchantment removal

Minor:

• Some enters-tapped lands slightly slow early development

Most Important Cards:

• Oath of Teferi
• Deepglow Skate
• Spark Double
• The Chain Veil
• Narset, Parter of Veils
• Semester's End
• Flux Channeler
• Elspeth, Sun's Champion
• Chandra, Torch of Defiance
• Urza's Ruinous Blast

Attribute Ratings:

Speed: 5/10

• Can establish threatening board states by T6-7 but lacks early win conditions. Fastest theoretical win via T5 Guff -3 with 4+ planeswalkers (12+ damage/cards) but requires ideal setup.

Resilience: 6/10

• Multiple protection mechanisms (Norn's Annex, Silent Arbiter) and recursion (Semester's End). Vulnerable to repeated board wipes but can rebuild through card advantage.

Consistency: 5/10

• Moderate proliferate/draw engine redundancy but limited tutors. Relies on Guff's card advantage to find key pieces.

Interaction: 6/10

• Efficient targeted removal (Path to Exile, Swords to Plowshares) and board wipes. Lacks free counterspells but uses planeswalker abilities for control.

Rating Justification:

This deck sits between Focused Casual (5.0) and Optimized Casual (5.5) due to:

• Clear planeswalker synergy focus with multiple win paths
• Moderately fast clock (T8-10 wins) through scaled damage/card advantage
• Better-than-precon interaction/protection package
• Lacks cEDH-level fast mana/tutors but exceeds typical casual power

Power level: 4.5 - 5.0