How does mirror target work / worth it? (dual blader)

target works the same as an archer's puppet. aggro'd monsters are aggro'd toward the mirror instead of you, but if the following happens:

Mirror __________________you______________ Monster's lazors

then you WILL be hit if the lazorz can reach your mirror. If the next happens:

You________mirror_________Lazorz

then you will only be hit if the range of the monster's attack extends beyond your mirror (i.e. you are in range of the attack yourself).

Otherwise, if you are out of range it will not reaggro you until mirror dies or some dipstick insists on killing your monster.