Into the Ashlands
Even a master occasionally fails at his task. A master weaponsmith sometimes produces a sword so misshapen and off balance that it is unusable, and even the most expert acrobat sometimes trips and falls. Critical Failures represent the chance that sometimes things can go very wrong, no matter how skilled you are at doing them.
A Critical Failure is a roll of a natural (unmodified) 1 on a skill check. A Critical Failure always fails.
The results of a critical failure are always a disappointment. They can range from embarrassing to disastrous.
You take a -5 penalty to your next skill attempt with the same skill after a critical failure. In a skill challenge, add one defeat to the tally.