
Put a -1/-1 counter on target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Grim Affliction has 3 printings, first in New Phyrexia (2011). EDHREC ranks it #4,561 among Commander cards. It appears most in Auntie Ool, Cursewretch decks (5,944 on EDHREC). It has 7 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.