The most common and most likely answer to this crossword clue is the 8 letter word MIRACLES
I've seen this crossword clue in The Guardian
M
I
R
A
C
L
E
S
Buddy explains!

The straight part
We know that "wonders" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case wonders = miracles.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MIRACLES mean?
MIRACLES noun- An event that appears inexplicable by the laws of nature and so is held to be supernatural in origin.
- A fortunate outcome that prevails despite overwhelming odds against it.
- An awesome and exceptional example of something
- To affect by a miracle; to work a miracle upon.