Any player may challenge a PC's action if success or failure are both interesting.

When your PC is challenged, you must generate a hit to meet it, like flipping a character card. If you don't meet a challenge, your PC's intentions are thwarted or complications arise.

The challenge must suggest consequences for failure. "Or else nothing happens" is not a challenge. The same action cannot be challenged multiple times.

Use challenges to tune the difficulty of a situation. A risky combat scene might pose several challenges. A simple social encounter might pose only one challenge.

• You're navigating rough terrain, and might fall or lose equipment
• You're fighting or fleeing a dangerous monster
• You're working with complex magic or technology that might malfunction
• You're confronting an emotionally fraught situation