There's something to be said about giving them the power to hope only to never let that hope be realized, but it would be a lot more effective to torture us without giving us magic at all.

[ It's obvious that the man isn't enjoying the conversation, but he hadn't been enjoying it in the first place. Light doesn't feel special for having earned the annoyance. ]

It's the obvious answer: magic. Anything more detailed depends on what branch you study.