
Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)
Voidslime has 9 printings, first in Dissension (2006). EDHREC ranks it #4,617 among Commander cards. It appears most in The Mimeoplasm decks (1,658 on EDHREC). It has 5 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.