A character may declare an active defense at any time as long as she has not used her action that round. She may also perform simple actions as usual. The first time she’s attacked, she rolls a bonus and applies it to all her defenses that round—physical, interactive, magical, etc. This should be rolled just before the first attack total is generated. Note that if Defend is an Approved Action, it’s successful only if the target is attacked and missed.

Minimum Bonus
An active defense can’t make a target more vulnerable—treat any Bonus Number less than +1 as +1.