When writing or speaking, we often use the phrase "but now" to indicate a shift in a narrative or a change in circumstances. However, it can quickly become repetitive or clunky to use the same phrase repeatedly. To avoid this, there are several synonyms for "but now" that can be used instead. Examples include "however," "yet," "nevertheless," "still," "nonetheless," "in contrast," or "on the other hand." Using these synonyms can add variety and nuance to your language and help you better convey your message to your audience.