
Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)
Disallow has 7 printings, first in Aether Revolt (2017). EDHREC ranks it #1,819 among Commander cards. It appears most in Y'shtola, Night's Blessed decks (12,215 on EDHREC). 2 public decks on TCG run it. It has 6 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.