It has a lot of room for mischief, ... loophole laden.

This is a loophole that must be plugged,

There is this loophole, which is strange.

I solemnly swear that I am up to no good.

…for nothing is ever so mischievous in its own place as it is out of it;

Now let it work. Mischief, thou art afoot. Take thou what course thou wilt.