Esper Control is a mirror-adjacent grind of Supreme Verdict, Consult the Star Charts, and their own Teferi, Time Raveler and Narset, Parter of Veils, so the game comes down to resolving and protecting threats through counterspells like Counterspell and Spell Snare. Mystical Dispute is excellent, countering their blue spells for one mana and shrugging off Narset, Parter of Veils since it isn't cast from hand disadvantage in the classic sense but still functions at low cost. Teferi, Time Raveler proactively shuts down their instant-speed Counterspell and Spell Snare on your turn while bouncing their own Teferi or a Narset. The extra Thoughtseize helps strip a Supreme Verdict or key counterspell before you commit a threat, while Griselbrand and Goryo's Vengeance are too clunky against a deck full of cheap interaction and Solitude.