"Will wonders never cease?" is a phrase often used to express surprise and amazement. However, if you're looking for synonyms to switch things up a bit, here are a few options: 1. "Well, I'll be darned!" 2. "I never would have guessed!" 3. "Remarkable!" 4. "Unbelievable!" 5. "Incredible!" 6. "How extraordinary!" 7. "It's a miracle!" 8. "Astounding!" 9. "I'm astonished!" 10. "This is unbelievable!" All of these phrases convey a sense of wonder and amazement in their own unique way. Feel free to try them out the next time you're expressing your surprise!