This is a mirror-adjacent matchup where both decks are racing to resolve a Show and Tell or Aluren payoff; Consign to Memory stops their colorless spells and any triggered abilities like Atraxa, Grand Unifier's enter-the-battlefield trigger, Yggdrasil activations are not relevant here but their own Atraxa trigger is a key target. Flusterstorm remains fine against their Force of Will/Ponder/Brainstorm package but Consign to Memory hits a wider and more relevant set of their colorless cards (Lotus Petal activations aren't targetable, but their Atraxa ETB trigger is). Keep racing with Show and Tell into Griselbrand or Emrakul, the Aeons Torn, since both decks are vulnerable to being out-sped.