Despoiler of Souls can't block. {B}{B}, Exile two other creature cards from your graveyard: Return Despoiler of Souls from your graveyard to the battlefield.
When Ossuary Rats enters, it deals X damage to target creature or planeswalker an opponent controls, where X is the number of creature cards in your graveyard.
You know you've ventured too deep when the rats stop running and hold their ground.
Tangled Colony can't block. When Tangled Colony dies, create X 1/1 black Rat creature tokens with "This creature can't block," where X is the amount of damage dealt to it this turn.
Clawing for scraps and driven mad by hunger, the individual rats became a writhing mass.
When Voracious Vermin enters, create a 1/1 black Rat creature token with "This creature can't block." Whenever another creature you control dies, put a +1/+1 counter on Voracious Vermin.
Lord Skitter promised the starving rats of Edgewall that they would never go hungry again.