double-edged weapon
double-edged sword

First was the gift from the Earl, a straight, double-edged weapon with a good point.

Patronage was always a double-edged weapon for the politicians.

The child is a double-edged weapon, Joscelin.

The photograph becomes a double-edged weapon now.

Rook Hollister, like The Shadow, was equipped with a double-edged weapon.

This, however, rapidly proved a double-edged weapon.

Control was a double-edged weapon of power, as likely to turn on the wielder as on others.

An expensive, eye-catching stand can be a double-edged weapon.

But politics by invective is a double-edged weapon, because intelligent people will ultimately stop believing these accusations.

Intelligence can be a double-edged weapon.