Goryo's Vengeance is racing to reanimate Griselbrand or Atraxa, Grand Unifier, but they also carry a lot of free countermagic like Force of Negation and Solitude that can interact with our combo turn. Silence shuts off their ability to cast Force of Negation, Solitude, or Spell Pierce on our turn, letting our storm turn go through uncontested. This is a race between two combo decks, so we keep our proactive plan largely intact and only add the protection piece that matters most. Prioritize combo speed over grinding since their deck can also just kill us first with a reanimated Griselbrand.