I can only use it every once in a while; it has to be built up, unfortunately. It's always good to have a backup plan, though.

[Gil takes a peek into the various classrooms as they walk through the school, but doesn't stop to investigate any of them too deeply. He might not admit it, but a good portion of his reason for that is that the childrens' skeletons bother him too much. He can't rule out the possibility that something had been placed with them, but... well, he doesn't want to be the one to look.]

This doesn't seem constructed. It looks like a memory.