Toxic Rat Swarm

Toxic Rat Swarm is a mono-black Rat tribal Commander deck built to go wide with a swarm of Rats, then overwhelm the table with anthem effects and token synergies. Its core plan is to flood the board with Rats through cards like Marrow-Gnawer, Pack Rat, Piper of the Swarm, Ogre Slumlord, and efficient tribal bodies like Rat Colony and Relentless Rats, then make them lethal with Coat of Arms, Door of Destinies, Vanquisher’s Banner, and Ashcoat of the Shadow Swarm.

The deck supports this with strong black ramp and utility lands such as Cabal Coffers, Urborg, Nykthos, and Cabal Stronghold, letting it power out big turns and rebuild quickly. Karumonix, the Rat King adds a toxic angle by granting Rats toxic 1, so wide attacks can also win through poison counters, while cards like Thrumming Stone can explosively chain out more Rats. Overall, it wins by overrunning opponents with a massive buffed Rat army, sometimes backed by **toxic