Overview:

A highly focused Rat Colony combo deck that aims to flood the board with rats and either win through combat damage or poison counters, leveraging powerful card draw and tutors to establish consistency.

Primer:

The deck's primary strategy revolves around deploying multiple Rat Colony creatures, which get exponentially stronger with each copy on the battlefield. The commander, Karumonix, the Rat King, adds toxic 1 to all rats, creating an alternative win condition through poison counters. The deck uses numerous tutors and card draw effects to find key pieces like Thrumming Stone, which enables explosive turns by chaining multiple Rat Colony casts together.

The deck operates by establishing early card advantage through effects like Phyrexian Arena and Herald's Horn, while using cost reduction effects from Bontu's Monument and Jet Medallion to deploy rats more efficiently. Once a critical mass of rats is achieved, cards like Eldrazi Monument and Ashcoat of the Shadow Swarm can quickly close out games. The deck can also generate additional value through Marrow-Gnawer and Ogre Slumlord, creating more rats or leveraging death triggers.

Weaknesses:

The deck is particularly vulnerable to board wipes and mass removal, as it relies heavily on maintaining a critical mass of creatures. Graveyard hate can prevent recovery, and the deck has limited interaction with opponents' strategies. The reliance on creature-based strategies makes it susceptible to effects like Propaganda or Ghostly Prison, and the deck can struggle against flying creatures without Eldrazi Monument in play.

Most Important Cards:

1. Thrumming Stone
2. Eldrazi Monument
3. Marrow-Gnawer
4. Herald's Horn
5. Jet Medallion
6. Bontu's Monument
7. Necropotence
8. Demonic Tutor
9. Ad Nauseam
10. Ashcoat of the Shadow Swarm

Attribute Ratings:

• Speed: 7/10
• Resilience: 5/10
• Consistency: 8/10
• Interaction: 3/10

Rating Justification:

This deck operates at a power level between 6.0 and 6.5, as it can consistently execute its strategy and potentially win around turns 6-7 through either combat damage or poison counters. While it includes powerful tutors and card draw, its reliance on creatures and vulnerability to board wipes prevents it from reaching higher power levels. The deck's consistency is high due to the redundancy of Rat Colony and numerous tutors, but its lack of interaction and protection holds it back from competing with more powerful strategies.

Final power level rating: 6.0 - 6.5