fun video game mechanic: open a door and a monster jumps out that you can kill with one hit, but as soon as you do another mister jumps out that's tougher. kill the second monster and an even stronger one follows. only way to end the cycle is to leave the area or use a special skill that permanently stops or removes the monster without killing it. In my dream, where this comes from, it was called "hide" but it could be "banish", "petrify", or even "tame".