Overview:

This Atraxa, Praetors' Voice deck combines toxic creatures and proliferate mechanics to spread poison counters, supported by +1/+1 counter synergies. While lacking infinite combos, it focuses on incremental value through Atraxa's end-step proliferate and poison acceleration. The deck operates at mid-power casual levels with moderate interaction and reliance on commander presence.

Primer:

Core Strategy: The deck aims to deploy toxic creatures (Venerated Rotpriest, Bloated Contaminator) and amplify poison counters through proliferate engines like Tekuthal, Inquiry Dominus and Atraxa's trigger. Key phases:

1. Early Setup: Play toxic creatures and mana accelerants (Birds of Paradise, Incubation Druid).
2. Counter Multiplication: Use proliferate effects from Thrummingbird, Contentious Plan, and Atraxa to escalate poison/charge counters.
3. Closing Power: Leverage Vorinclex, Monstrous Raider for doubled counters and Tyrranax Rex for lethal toxic 4 swings.

Key Tips:

• Prioritize protecting Atraxa - her proliferate is critical for maintaining momentum
• Use Vraska's Fall and Phyresis Outbreak as surprise poison accelerants
• Staff of Compleation provides flexible proliferate/draw once corrupted

Mulligan Priorities:

• Keep hands with 3 lands and early toxic creature/proliferate enabler
• Avoid hands relying solely on 4+ mana value threats without ramp

Weaknesses:

Critical:

• Heavy commander dependence (15+ cards lose significant value without Atraxa)
• Limited protection for key pieces (0 free counterspells, 1 Reject Imperfection)

Moderate:

• Slow recovery from board wipes (only Inkshield as protection)
• Redundant proliferate effects lack direct wincon support

Minor:

• Vulnerable to Solemnity/Melira, Sylvok Outcast effects (no enchantment removal in green)

Most Important Cards:

• Vorinclex, Monstrous Raider
• Tekuthal, Inquiry Dominus
• Venerated Rotpriest
• Tyrranax Rex
• Vishgraz, the Doomhive
• Vraska, Betrayal's Sting
• Staff of Compleation
• Norn's Choirmaster
• Thrummingbird
• Ezuri, Stalker of Spheres

Attribute Ratings:

Speed: 6/10

• Can theoretically goldfish T7-8 poison kills through proliferate chains
• Slow mana base (multiple tapped lands) delays key 4-5 MV threats

Resilience: 5/10

• Moderate recursion (Voidwing Hybrid, Tamiyo, Compleated Sage)
• Lacks protection against focused removal (1 Swiftfoot Boots effect in Skrelv)

Consistency: 6/10

• 12 proliferate sources and 8 toxic creatures provide redundancy
• Limited tutors (only Tamiyo, Compleated Sage as pseudo-tutor)

Interaction: 5/10

• 7 targeted removals (Swords to Plowshares, Fracture)
• 2 board wipes (Merciless Eviction, Phyresis Outbreak)
• No free counterspells or stax pieces

Rating Justification:

The deck fits between Optimized Casual (5.0) and High-Power Casual (5.5) in the rubric. While it has focused proliferate/toxic synergy and reasonable threat density, it lacks:

• cEDH staples (free interaction, turbo tutors)
• Turn 8-9 win consistency against typical 5.5-level interaction
• Multi-angle win redundancy (relies entirely on poison)

Power level: 5.0 - 5.5