Mtg rat deck EDH

[Senseless Madness]

About how many rats in a rat deck should I run? And could I get a list of cheap rats?

[Mattao19]

1 {Pack rat} (obviously)
58 {Relentless Rats}
1 {Ogre Slumlord}

39 {Swamp}

Idk what commander

[Ekann1]

{marrow gnawer}. There's a rat EDH deck near the top of the EDH forum, I'd look at that.