
Swarm of Rats's power is equal to the number of Rats you control.
Swarm of Rats has 12 printings, first in Portal Second Age (1998). EDHREC ranks it #9,408 among Commander cards. It appears most in Marrow-Gnawer decks (5,040 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.