Goryo's Vengeance reanimates Griselbrand or Atraxa straight from the graveyard, so Tormod's Crypt and Nihil Spellbomb are our best answers — strip their graveyard before Goryo's Vengeance or Persist can find a target, ideally after they've discarded or milled into a big threat but before they cast the reanimation spell. Thoughtseize is excellent both proactively (strip Goryo's Vengeance or Ephemerate) and for information, letting us know exactly what threat to prioritize exiling from their yard. This deck can also just grind us out with Psychic Frog and Atraxa's card advantage, so keep enough pressure alongside the disruption rather than going full control. Time the graveyard hate carefully — too early and they simply refill it, too late and Griselbrand is already attacking.