a double-edged sword

something that causes both advantages and problems His great intelligence was a real double-edged sword because he never felt he could communicate with ordinary people.

Common Names:

Name	Pronounced	Usage
Nuria	-	Spanish
Asim (2)	-	Indian, Hindi, Bengali
Darya (2)	-	Persian
Margaretta	mahr-gə-RET-ə	English
Sheldon	SHEL-dən	English
Halvor	-	Norwegian