[@KatherinWinter] Characters with no mental fortitude (the average human) can be controlled indefinitely until they reach a minimum distance of 200 yards. (for reference, an American football field is 120 yards in length) The average shard holder would presumably be enhanced mentally from contact with their shards, meaning a much shorter range to control (60 yards or less) or the inability to control unless contact is made. Either way, there would be much less time to toy with these people, only about 10 seconds to a minute based upon their characters willpower. The only exception would be prolonged contact, and even then breaking this contact would start the clock ticking.

I'll try to avoid controlling other people's characters if Jeremy can help it, as he'd likely be hesitant to try anything with people who could wreck his shit if he made the wrong move. If he does end up trying to control someone, I'd probably contact them through PM to establish his connection strength and what he'd be able to do with them.