A flash of insight.

The instant your fingers make contact with the small embossed lettering reading "LOVE, CHERISH, OBEY," your mind lights up with thoughts that aren't your own. Instantly you know with absolute certainty that if you were to prick any person with this arrow, they will begin to find it painful to disobey anything you say, and even to think negative thoughts about you. But it can only be used once. Once someone is stricken with it, the arrow will dissolve and never be useable again.

You recoil suddenly from the arrow. You should feel like you are going insane, with these foreign thoughts in your head, but every fiber of your being is telling you that this is real, and the arrow will work.

You step forward again and wiggle the arrow free of the dirty concrete. You supposed there was only one way to find out for sure.

"Derby!" Your boss calls from the cracked door. "Your break ended five minutes ago. Get back to work."

You look down at the arrow in your hands, and smile.