Venomous Tendrils

Stockpile {b} (Exile this card from your hand: It gains "{b}: Put a cache counter on this card. Activate this ability only any time you could cast a sorcery" and "You may cast this card from exile. It costs {1} less to cast for each cache counter on it.")
Destroy target creature. Its controller loses life equal to the difference between its power and its toughness.
Poison gas is a favored weapon of the Cabal.