Esper Ephemerate grinds with value creatures like Baleful Strix and Mulldrifter blinked repeatedly via Ephemerate, backed by Counterspell, so Fireblast's Mountain-sacrifice cost is a liability in a longer grindy game and Relic of Progenitus can disrupt any graveyard recursion while cycling itself into a card. Searing Blaze gives efficient two-for-one removal against their small creatures like Baleful Strix while pressuring their life total directly. Keep the fast madness curve intact since racing before they assemble full value engines is still the best path to victory.