An interesting option is to play Zombie Trailblazer, a zombie that commits crimes easily with the help of your other creatures
Likewise, the Planeswalker Decks for Core Set 2021 each come with a Draft Booster which can contain these cards
This mechanic reflects how a small group of rats may not be an issue, but a massive swarm of hostile rats could overwhelm creatures they normally couldn't on their own
1 2 DCI (June 1, 2007)
Though it primarily functions as a Mono-Black Demons deck, the addition of the infinite-combo potential gives it an exciting new angle, allowing it to close out games unexpectedly
Cephalid Coliseum (Ext, S, Block) While not usable before threshold is achieved, and quite painful until then, the Coliseum provides a quick and easy way to filter your hand