Esper GenericBlink is full of blue spells (Ephemerate targets, Quantum Riddler, counterspells) making Mystical Dispute extremely efficient at {U} to counter their key plays, while Consign to Memory already handles Orcish Bowmasters triggers and any colorless spells they cast. Into the Flood Maw bounces their blink pieces like Flickerwisp or a Solitude before value is generated. Veil of Summer is still useful here since it grants hexproof from black, protecting your creatures from Fatal Push and protecting you from Thoughtseize, but it is more of a proactive tempo card than a hard answer to their plan, and Disciple of Freyalise is a clunky sacrifice payoff against a deck that will just Flickerwisp or Solitude it away. Keep Pact of Negation and Endurance in, since Endurance can strip their graveyard value from Overlord of the Balemurk and Witch Enchanter.