Overview:

This Jeskai (U/R/W) deck helmed by Arthur, Marigold Knight focuses on aggressive token generation and combat synergy. The strategy revolves around leveraging Arthur's attack trigger to cheat impactful creatures into play while building a wide board of 1/1 tokens through offspring mechanics and copy effects. Key themes include token multiplication, combat phase manipulation, and value generation through enter-the-battlefield triggers. Arthur serves as both an enabler for creature deployment and a focal point for attack triggers, with backup plans involving equipment synergies and midrange value engines.

Primer:

Core Strategy Execution:

1. Early Setup (Turns 1-4): Deploy mana rocks (Sol Ring, signets) and value creatures like Spirited Companion or Verge Rangers. Use 1-power token generators like Agate Instigator and Steelburr Champion to build board presence.
2. Commander Deployment (Turn 4-5): Cast Arthur with protection from Plumecreed Escort or Timely Ward. Begin attacking with Arthur + 1+ other creatures to trigger his creature cheat ability.
3. Combat Engine Activation:
   • Use Helm of the Host on Arthur for exponential attack triggers
   • Amplify damage with Berserkers' Onslaught and Jazal Goldmane
   • Generate infinite combat phases with Combat Celebrant + Helm of the Host
4. Value Consolidation: Maintain card advantage through Bident of Thassa, Cloudblazer, and Zinnia, Valley's Voice. Rebuild boards after wipes with Storm of Souls and Sun Titan.

Mulligan Priorities:

• Keep hands with 3 lands including at least two colors
• Prioritize early ramp (signets, Loyal Warhound) or 1-power token generators
• Look for protection pieces (Basilisk Collar, Reality Shift) if keeping Arthur-heavy hands
• Avoid hands without early plays or color-fixing

Key Tips:

• Use Retreat to Coralhelm to untap Arthur after attacking or protect key creatures
• Echoing Assault turns every 1/1 token into a menace threat that copies attacking creatures
• Brash Taunter + Blasphemous Act can serve as emergency board wipe + player damage
• Extravagant Replication on Solemn Simulacrum creates land-ramp engine

Weaknesses:

Critical

• Heavy reliance on combat damage with limited evasion beyond Archetype of Imagination
• No free countermagic to protect key pieces from removal
• Weak to Cursed Totem effects shutting down creature abilities

Moderate

• Token strategies vulnerable to Echoing Truth-effects and Crawlspace
• Limited graveyard recursion outside Sun Titan
• High CMC enchantments (Berserkers' Onslaught) vulnerable to removal

Minor

• Some enters-tapped lands slow early development
• Limited instant-speed interaction for stacked combats

Most Important Cards:

• Helm of the Host (Combat phase/commander duplication engine)
• Combat Celebrant (Infinite combat enabler)
• Berserkers' Onslaught (Damage multiplier)
• Storm of Souls (Board recovery)
• Sun Titan (Recurrence engine)
• Extravagant Replication (Value/copy generator)
• Zinnia, Valley's Voice (Token amplifier)
• Archetype of Imagination (Evasion enabler)
• Blasphemous Act (Board reset)
• Bident of Thassa (Card advantage)

Attribute Ratings:

Speed: 5/10
Can threaten wins through combat around T7-8 with ideal draws, but lacks fast mana for explosive starts.

Resilience: 4/10
Limited protection for key pieces and heavy board commitment makes recovery from wipes challenging.

Consistency: 6/10
Multiple token generators and card draw engines provide redundancy, but lacks high-impact tutors.

Interaction: 5/10
Moderate spot removal suite but lacks stack interaction and struggles against resolved enchantments.

Rating Justification:

The deck demonstrates focused casual capabilities with its combat-oriented gameplan and some synergies, but its reliance on attacking with multiple creatures and vulnerability to disruption limit its speed and resilience. While capable of explosive token-based turns, it typically wins through combat damage around turns 8-10.

Power level: 4.0 - 4.5