two-edged sword

and double-edged sword

Fig. something that offers both a good and bad consequence. The ability to get your insurance to pay for it is a double-edged sword. They may raise your rates. Her authority in the company is a two-edged sword. She makes more enemies than allies.

Common Names:

Name	Pronounced	Usage
Kennard	KEN-ərd	English
Ryana	rie-AN-ə	English (Rare)
Bile	-	Irish Mythology
Edda (2)	-	Icelandic, Ancient Scandinavian
GracÍLia	grə-SEEL-yə	Portuguese
Briseida	-	Literature