Taken from the Mythical Monster’s Storytelling Guide
Don’t assume incompetence from the player characters. Minor and Major Blunders are bound to happen but they are simply accidents and not a result of a character’s idiocy. Bear in mind that many actions require vigor to perform. By spending vigor and not gaining enough successes to overcome an obstacle, that alone is some measure of failure. So if a character falters, add a detail that might have caused the blunder. Perhaps the character’s attack caused them to slip and lose balance for a moment. Or maybe a Major Blunder takes the form of an unexpected gust of wind threatening to blow the character off the unstable rope bridge.
