This is the mirror match, so Fatal Push answers their Delighted Halfling, Badgermole Cub, and Devoted Druid (all mana value 2 or less) before they can go off, buying crucial tempo in a race where whoever assembles their engine first usually wins. Endurance can flash in as a surprise blocker and its enters-the-battlefield ability puts a graveyard on the bottom of the library, which matters since Agatha's Soul Cauldron works by exiling cards from graveyards; clearing a graveyard can take away its fuel. Since the mirror is largely about who deploys mana dorks and payoffs faster, prioritize efficient removal and disruption over our own slower value pieces like Duskwatch Recruiter and Fiend Artisan. Evoke Endurance for free is also an option if we need the disruption without tapping out.