This combo deck wins via Hermit Druid milling its own library followed by Volrath's Shapeshifter or reanimation. Abeyance can be cast on their turn to stop Hermit Druid's activation, since it is not a mana ability, and to stop them casting Unearth or Cabal Therapy for that turn. It does not stop Animate Dead, which is an enchantment, so don't count on it against that. Seal of Cleansing can destroy Survival of the Fittest or Animate Dead, which denies their engine or sacrifices the reanimated creature. Mana Leak is unreliable since it can't touch Hermit Druid's activation, and their cheap spells like Unearth or Animate Dead are easy to pay through. Intuition is less valuable than raw disruption in a race against a potential one-turn kill. Swords to Plowshares remains excellent removal for Volrath's Shapeshifter once it has copied a creature.