Overview:

This Omnath, Locus of Mana deck focuses on explosive mana generation and creature-based dominance. The strategy revolves around storing green mana through Omnath, enabling massive creature deployments and leveraging land/creature synergies. Key elements include mana multipliers (Nyxbloom Ancient, Doubling Cube), creature-based card draw (Rishkar's Expertise, Return of the Wildspeaker), and combat overrun effects (Pathbreaker Ibex, Primal Rage). While lacking infinite combos, it can generate overwhelming board states through exponential mana scaling.

Primer:

Core Strategy: The deck accelerates rapidly using 1-mana dorks and land untappers (Seedborn Muse, Wilderness Reclamation), storing mana in Omnath to deploy game-ending threats like Ghalta, Primal Hunger or Shriekwood Devourer. Key phases:

1. Ramp Phase (T1-3): Deploy 3+ mana sources using Llanowar Elves, Birds of Paradise, and Lotus Cobra.
2. Mana Multiplication (T4-5): Resolve Nyxbloom Ancient or Karametra's Acolyte with Omnath in play, often reaching 20+ stored mana.
3. Overrun Phase (T6+): Cast Finale of Devastation with X=10 or activate Pathbreaker Ibex with a massive Omnath to one-shot opponents.

Mulligan Priorities:

• Keep hands with 2+ ramp sources (preferably creatures)
• Prioritize early protection for Omnath (Snake Umbra, Heroic Intervention)
• Reject hands without green mana sources or creature-based acceleration

Key Interactions:

• Ashaya, Soul of the Wild makes all creatures count as Forests for Omnath's mana storage
• Seedborn Muse + Wilderness Reclamation enables quadruple mana generation per turn cycle
• Staff of Domination converts Omnath's stored mana into infinite card draw/life gain

Critical Sequencing:

1. T1: Land + Elvish Mystic
2. T2: Omnath + leave mana open for protection
3. T3: Seedborn Muse or Doubling Cube
4. T4: Nyxbloom Ancient -> 30+ stored mana

Weaknesses:

Critical:

• Relies heavily on commander presence (3+ removals cripple strategy)
• Limited answers to flying/recurring threats
• No graveyard recursion beyond Finale of Devastation

Moderate:

• Vulnerable to mass artifact/enchantment removal
• Weak to Cursed Totem-effects shutting off dorks
• Requires combat phase for primary wins

Minor:

• Handles single-target removal well via auras/hexproof
• Resilient to land destruction with basic-heavy manabase

Most Important Cards:

• Seedborn Muse
• Doubling Cube
• Nyxbloom Ancient
• Finale of Devastation
• Ashaya, Soul of the Wild
• Pathbreaker Ibex
• Heroic Intervention
• Sylvan Library
• Defense of the Heart
• Rishkar's Expertise

Attribute Ratings:

Speed: 6/10

• Can threaten lethal via 21+ commander damage by T6-7
• Finale of Devastation enables T8+ table kills
• Mana explosion typically occurs T5-6

Resilience: 5/10

• 6 protection spells (Heroic Intervention, Overprotect)
• 8 card draw engines mitigate hand disruption
• Struggles against stax pieces like Linvala, Keeper of Silence

Consistency: 7/10

• 12 ramp creatures ensure early Omnath casts
• 8 land tutors (Nissa's Pilgrimage, Archdruid's Charm)
• 6 card advantage engines maintain gas

Interaction: 4/10

• 6 targeted removal (Beast Within, Song of the Dryads)
• 3 board wipes (Creeping Corrosion, Back to Nature)
• Lacks stack interaction beyond Emergence Zone flash

Rating Justification:

This deck operates at high casual/low optimized levels (5.5-6.0). It outpaces precon-level decks through explosive mana scaling but lacks the interaction density and combo redundancy of true cEDH builds. The turn 6-8 goldfish speed aligns with optimized casual, while the commander dependency and combat-focused wins prevent higher rankings. Key differentiators from lower tiers include Sylvan Library filtering and Defense of the Heart threat deployment.

Power level: 5.5 - 6.0