
Destroy target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Spread the Sickness has 3 printings, first in Mirrodin Besieged (2011). EDHREC ranks it #11,863 among Commander cards. It appears most in Karumonix, the Rat King decks (1,353 on EDHREC). It has 8 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.