Overview:

This five-color Eldrazi deck revolves around Ulalek, Fused Atrocity, leveraging token generation, cost reduction, and spell/ability copying to deploy massive Eldrazi threats. The commander amplifies board impact by copying all spells/abilities whenever an Eldrazi is cast (with {C}{C} payment), enabling explosive turns with token armies, annihilator triggers, and value engines. Secondary synergies include Morophon, the Boundless as a hidden commander for cost reduction and tribal buffs, alongside recursive tools like Spawnbed Protector and Artisan of Kozilek. The deck aims to win through overwhelming combat damage, annihilator pressure, and token swarms enhanced by Eldrazi Monument or Forsaken Monument.

Primer:

Core Strategy Execution:

1. Early Ramp & Setup (Turns 1-4):
   Prioritize mana acceleration via Sol Ring, Eldrazi Temple, Awakening Zone, and painlands. Use Herald's Horn/Morophon, the Boundless to reduce Eldrazi costs. Generate Scion/Spawn tokens for mana.
2. Midgame Threats (Turns 5-7):
   Deploy key Eldrazi like Drowner of Hope, Sifter of Skulls, or World Breaker to establish board presence. Activate Ulalek’s copy ability to duplicate token generators, removal, or card draw (e.g., copying Deepfathom Skulker triggers).
3. Late-Game Domination (Turns 8+):
   Drop finishers like Ulamog's Crusher (annihilator 2), Artisan of Kozilek (reanimation), or Eldrazi Conscription (voltron). Use Eldrazi Confluence/Kozilek's Return for board control.

Mulligan Priorities:

• Keep hands with 2-3 lands (including color-fixing like Command Tower).
• Prioritize early ramp (e.g., Sol Ring, Everflowing Chalice) or token generators (Awakening Zone).
• Look for cost reducers (Herald's Horn, Morophon) or card advantage (Idol of Oblivion).
• Avoid hands lacking colored sources or clogged with high-CMC spells.

Key Tips:

• Copy Strategically: Use Ulalek’s ability to duplicate impactful triggers (e.g., Sifter of Skulls death triggers, Glaring Fleshraker token/damage effects).
• Protect Key Pieces: Eldritch Immunity and Imprisoned in the Moon handle threats; prioritize shielding Morophon/Forsaken Monument.
• Leverage Recursion: Recycle Eldrazi with Spawnbed Protector or **Artisan of Kozilek to to maintain pressure.

Weaknesses:

Critical

• Mana Base Fragility: Heavy reliance on painlands and slow fixing (e.g., tapped lands) risks color screw or life loss.
• Board Wipe Vulnerability: Limited recovery tools outside recursion; losing token engines cripples momentum.
• Anti-Token/Stax Counters: Cursed Totem/Torpor Orb shut down Scion generation and ETB value.

Moderate

• Slow Start: High average CMC (7.2) delays threats without perfect ramp.
• Interaction Gaps: Minimal counterspells/instant-speed answers to combo decks.

Minor

• Annihilator Triggers: Relies on combat to pressure opponents; evasion tools (e.g., trample) are limited.

Most Important Cards:

• Morophon, the Boundless (Tribal cost reduction, +1/+1 buff)
• Forsaken Monument (Mana doubling, lifegain, +2/+2 buff)
• Eldrazi Temple (Critical ramp for colorless spells)
• Herald's Horn (Cost reduction, card advantage)
• Eldrazi Monument (Indestructible/flying finisher)
• Awakening Zone (Token generation/ramp)
• Deepfathom Skulker (Card draw engine)
• Spawnbed Protector (Recursion + token generation)
• Artisan of Kozilek (Reanimation + annihilator)
• Eldrazi Confluence (Versatile interaction)

Attribute Ratings:

Speed: 5/10

• Threatens lethal via annihilator/swarms around T8-10 but struggles to accelerate faster without perfect draws.

Resilience: 4/10

• Limited protection/recursion; board wipes or targeted removal on key pieces (Morophon/Forsaken Monument) cripple the deck.

Consistency: 6/10

• Moderate card draw (Rishkar's Expertise, Idol of Oblivion) and tutors (Ancient Stirrings), but high variance due to mana demands.

Interaction: 5/10

• Situational removal (Kozilek's Return, Crib Swap) and stax (Selective Obliteration), but lacks stack interaction.

Rating Justification:

This deck operates as a Focused Casual build with a clear Eldrazi tribal plan but suffers from slow speed and fragility against disruption. Its T8-10 win potential aligns with optimized casual tiers, but inconsistent mana and recovery hold it back.

Power level: 4.5 - 5.0