Psychatog is their main threat, and Smother answers it cleanly: Psychatog has mana value 3, and its +1/+1 pumps never change that, so Smother destroys it at any size. Both Smothers stay in the deck. Tormod's Crypt disrupts their Psychatog fuel, since the graveyard-exile activation depends on having cards in their graveyard, and it also blunts Circular Logic, which scales with the cards in its caster's graveyard. Duress trims since they already have a lot of their own discard and countermagic to fight through, and we'd rather have more interaction with their graveyard. Keep Pernicious Deed as a catch-all against Psychatog (X=3) and any other permanents they bring in.