Rat typal in Commander sits at an awkward power intersection: it generates explosive graveyard value and wide board states, but the low individual stats of most rats make the strategy vulnerable to single-target removal and board wipes. This list ranks the strongest rat-linked commanders and build-around cards for competitive tables, filtered by their ability to convert a swarm of 1/1s into a win condition before turn 6.
Ranking Criteria and Scope
This is not a casual "fun swarm" ranking. Evaluation hinges on three axes: speed to a threatening board state, resilience to interaction, and conversion potential—meaning the ability to turn rat tokens into a definitive win rather than just a wide presence. Cards are judged in the context of cEDH and high-power Commander, where opponents are comboing or locking the board by turn 3-4. A rat commander that needs six uninterrupted turns to accumulate value is ranked accordingly. Patch sensitivity is high; rats rely heavily on sacrifice outlets and graveyard recursion, both of which Wizard routinely prints hate for.
S-Tier: The Only Rats That Close Games
Marrow-Gnawer
Remains the gold standard not because the card is inherently broken, but because it is the only rat commander that threatens a realistic turn 4-5 kill through Overrun effects and unblockable alpha strikes. Marrow-Gnawer turns every other rat into an unblockable threat and a sacrifice engine simultaneously. In competitive builds, you aren't playing fair rats—you're pairing this with Ashnod's Altar and Pitiless Plunderer to generate infinite mana and tokens. The failure state is obvious: if Marrow-Gnawer is removed before the combo line resolves, the deck collapses into a slow midrange pile that cannot compete. Best for: Players who want to win through combat damage in a pod that underestimates rat math. Skip if: Your meta is heavy on Stifle effects or instant-speed creature removal before combat.
Rat Colony
A non-traditional commander that breaks the fundamental rule of deckbuilding restriction: you can run any number of copies. In competitive play, this isn't a swarm deck—it's a combo enabler. Running 30+ copies of Rat Colony alongside Dark Ritual effects and Aluren creates degenerate draw lines. The deck mulligans aggressively for combo pieces and doesn't care about card advantage in a traditional sense because every card in the deck does the same thing. Trade-off: The deck is incredibly linear and folds to a single well-timed Containment Priest or Torpor Orb. You are playing a glass cannon that either wins by turn 3 or does nothing meaningful for the rest of the game.
A-Tier: High-Value Engines With Competitive Ceilings
TMNt Rat King Variants (Universes Beyond)
The March 2026 Teenage Mutant Ninja Turtles crossover introduced new Rat King iterations that function as rat anthem effects with built-in recursion. These are strong not because they are rats, but because they happen to be rats that do what black/green commanders already want to do: fill the yard and replay threats. The ceiling here is high-power, not cEDH. The TMNT Rat King variants struggle at the highest level because they cost too much mana for the speed of competitive tables and don't provide immediate value on ETB. Best for: High-power pods where you want typal synergy without sacrificing generic goodstuff power.
Nashi, Moon's Legacy
Nashi represents the Kamigawa Nezumi angle—a legendary rat that blends ninja and rat typal. The competitive appeal is narrow: Nashi works in decks that exploit attack triggers and blink effects to generate repeated value. The problem is that ninja strategies in competitive Commander are already borderline, and restricting yourself to rats narrows the card pool to the point of inefficiency. Nashi is a strong A-tier pick for the specific niche of rat-ninja hybrid builds, but that niche is not where you want to be against tuned Doomsday or Kinnan lists.
B-Tier: Role Players and Enablers
This tier covers the rats you include as components, not as reasons to build the deck. Bloomburrow added several rats that function as sacrifice fodder or graveyard enablers, but none dictate the game's direction on their own. Freya Crescent, technically a rat from the Final Fantasy IX crossover, generates red mana restricted to equipping artifacts—useful in very specific equipment-centric rat builds, but irrelevant to competitive play where red mana efficiency matters less than raw card advantage and combo potential.
The broader rat pool of 118 cards (per Scryfall data) is mostly filler at competitive tiers. Cards that generate rat tokens without providing an immediate payoff for having those tokens are trap includes. A 1/1 rat for one black mana is not a competitive Magic card. A 1/1 rat for one black mana that also mills you or sacs for value might be—but only if the value loop closes within two turns.
C-Tier: Casual Only
Anything that relies on attacking with rats without an Overrun effect, evasion anthem, or sacrifice conversion. Pure swarm strategies without a win condition shortcut are unplayable above casual power levels. If your rat deck's plan is "make a lot of rats and turn them sideways," you will lose to any deck with a cohesive strategy. This includes most rats from early Magic sets that simply exist as 2/1 or 1/2 bodies with no relevant abilities beyond the subtype.
Meta Caveats and Patch Sensitivity
Rat strategies are uniquely vulnerable to three categories of disruption that competitive players deploy by default:
- Graveyard hate: Rest in Peace, Leyline of the Void, and Bojuka Bog shut down the sacrifice-and-recursion engine that rat decks depend on. Unlike aristocrats decks that run diverse creature types, rat decks cannot easily swap in non-rat recursion targets without breaking typal synergy.
- Token hate: Torpor Orb and Hushbringer disable the ETB triggers that generate rat tokens in the first place. Dust to Dust and Bitter Ordeal punish wide board states directly.
- Speed mismatch: The fastest rat kill sequences still require two to three pieces on board. Competitive pods are resolving wins with two-card combos on turn 2-3. Rats are inherently a three-to-four-piece strategy, which puts them a full turn behind the meta's speed curve.
Every new set that prints rats creates noise about the typal "finally being competitive." The TMNT crossover and Bloomburrow both generated this cycle of hype. The reality hasn't changed: rats are viable at high power when built as combo-adjacent sacrifice decks, and unviable at cEDH except through the Rat Colony exploit. Patch changes matter less than the fundamental math of the archetype—rats are cheap creatures that need support to become threats, and that support costs mana and cards that competitive decks spend on winning faster.
Who Should Build Competitive Rats
Build Marrow-Gnawer combo if you want to punish pods that don't respect combat damage and don't run enough grave hate. Build Rat Colony if you enjoy degenerate mulligan gambling and don't mind a deck that auto-loses to common hate pieces. Avoid rat typal at competitive tables if you expect heavy interaction—there are simply better ways to spend your deckbuilding equity in black and black-green.
