Esper Control is full of blue spells (Teferi, Time Raveler, Narset, Parter of Veils, Jace, the Mind Sculptor, counterspells) that Mystical Dispute answers for as little as {U}, while Consign to Memory snipes colorless free-cast triggers and any colorless permanents they bring in. Lightning Bolt and Fatal Push are weaker here since their key threat Solitude can be evoked for free anyway, and their other key cards are planeswalkers and enchantments that creature removal doesn't touch, so swapping to more counter magic improves your ability to fight through their disruption. Watch for Orim's Chant and Silence, which can still lock you out of casting these counters on their turn, so hold mana up proactively on your own turn when possible.