Overview:

This Eldrazi tribal deck leverages Ulalek, Fused Atrocity to copy spells and abilities when casting Eldrazi, creating overwhelming board states through massive creature threats and annihilator triggers. The strategy focuses on ramping into high-cost Eldrazi using cost reducers like Forsaken Monument and Eye of Ugin, with secondary value engines from token generation and card draw tied to colorless synergies.

Primer:

Core Strategy:
The deck operates in three phases:

1. Early Ramp: Use lands like Eldrazi Temple and artifact accelerators (Sol Ring, Everflowing Chalice) to reach critical mana thresholds.
2. Threat Deployment: Cast game-ending Eldrazi like Kozilek, Butcher of Truth and Pathrazer of Ulamog, amplified by Ulalek's copying ability.
3. Value Loops: Exploit token generators (Awakening Zone, Rapacious One) and recursion (Artisan of Kozilek) to sustain pressure.

Key Lines:

• Conduit of Ruin tutoring into It That Betrays creates immediate sacrifice synergies.
• Echoes of Eternity doubling Ulalek's triggers leads to exponential annihilator triggers.
• Forsaken Monument + Herald of Kozilek enables casting 10+ mana Eldrazi by turn 6.

Mulligan Priorities:

• Keep hands with 3+ mana sources including colorless producers.
• Prioritize early ramp (Sol Ring, Herald's Horn) over high-cost threats.
• Reject hands lacking Eldrazi synergy enablers.

Critical Sequencing:

1. Turn 2-3: Deploy cost reducers (Herald of Kozilek, Eye of Ugin).
2. Turn 4-6: Resolve key Eldrazi like Ulamog's Crusher to pressure opponents.
3. Late Game: Activate Ulalek's copy ability with It That Betrays or Void Winnower to lock out opponents.

Weaknesses:

Critical:

• No protection for Ulalek beyond Eldritch Immunity (folds to 3+ removals).
• Limited interaction for noncreature threats (enchantments/artifacts).

Moderate:

• Slow recovery from board wipes (relies on Eldrazi Monument for indestructible).
• Weak to land destruction (Blood Moon cripples 5-color mana base).

Minor:

• High average CMC makes early game vulnerable.

Most Important Cards:

• Forsaken Monument
• Eye of Ugin
• Conduit of Ruin
• Kozilek's Return
• All Is Dust
• Ugin, the Ineffable
• It That Betrays
• Void Winnower
• Echoes of Eternity
• Spawnsire of Ulamog

Attribute Ratings:

Speed: 5/10

• Can deploy 8+ mana threats by turn 6-7 with optimal draws. Lacks fast mana (e.g., Mana Crypt) or T3-4 explosive plays.

Resilience: 4/10

• Recursion via Artisan of Kozilek and Spawnbed Protector, but heavy reliance on commander and vulnerable to stax.

Consistency: 6/10

• 8+ tutors/cost reducers (Herald's Horn, Conduit of Ruin) ensure Eldrazi access. Limited draw outside Deepfathom Skulker.

Interaction: 3/10

• Reactive tools limited to Kozilek's Return and Ugin, the Ineffable. No counterspells or instant-speed answers.

Rating Justification:

This deck sits between "Focused Casual" (4.5) and "Optimized Casual" (5.0) on the rubric. It has deliberate Eldrazi synergies and can threaten T9-10 wins via annihilator triggers, but lacks:

• Fast combos seen in 5.5+ decks
• Robust interaction suite
• Mana base resilience (no fetches/shocks)

Power level: 4.5 - 5.0