Story talk:Operation Titanic Discoveries/@comment-796766-20120406032549/@comment-771241-20120406155902

Well, the idea around it was that using the amulet was so draining, that to use it results in the user falling into a coma for 24 hours once the power was exhausted. If they were to stop using it before the limit was up, that would more than likely result in a proportionally shorter coma as well (1 minute results in a 4 hour 48 minute coma instead of a 24 hour one).