Esper Control wants to counter your key spells (Counterspell, Spell Snare, Force of Negation) and eventually sweep the board with Wrath of the Skies, so Mystical Dispute is a premium answer since it counters their own counterspells for one mana against a heavily blue deck. Teferi, Time Raveler is one of your best cards in the matchup — it shuts off their instant-speed counters and Solitude, stops them from casting Wrath of the Skies at will, and locks down their own Teferi's -3 ability. Cut the top-heavy Waker of Waves and slow Sink into Stupor since you want a lower curve full of resilient threats and cheap disruption to play around their sweepers. Bait counters with Shardless Agent or Violent Outburst before committing your Living End flip, and hold Endurance/Subtlety to strip their hand of interaction first.

Boros Energy is a fast, low-to-the-ground aggro deck full of one-for-one removal (Galvanic Discharge, Thraben Charm) and disruption (Static Prison), so your Living End plan needs to resolve on curve rather than durdle. Mystical Dispute is excellent here since it's a hard counter for a mono-red-adjacent deck and can stop a Blood Moon or a key Ranger-Captain of Eos. Teferi, Time Raveler shuts off their instant-speed interaction and protects your cyclers/creatures once you flip Living End, while also locking their static effects like Blood Moon. Sink into Stupor is too slow against their proactive curve and Street Wraith is a marginal cut since you need every turn of pressure rather than cycling for value. Prioritize resolving Violent Outburst or Shardless Agent into Living End as early as possible before they stabilize with Ranger-Captain or Voice of Victory.

Affinity floods the board with cheap artifact creatures like Kappa Cannoneer, Arcbound Ravager, and various golems off Urza's Saga, so Force of Vigor is a two-for-one blowout that can pitch a card to destroy two artifacts (or wreck their Saga chapter III token and another permanent) for free. Inevitable Betrayal lets you steal a threat like Kappa Cannoneer or an animated Saga construct and swing back with it, which is huge tempo against a deck that can't easily remove your board. Force of Negation gets trimmed since Affinity has few must-counter spells early and you'd rather deploy your own plan; Sink into Stupor is too slow to matter against their explosive draws. Focus on flipping Living End to answer their go-wide boards in one shot, since your creatures individually are usually smaller than theirs.