A value on your character sheet you reference when it comes up.
Definition
You are unusually stubborn and hard to sway, resisting intimidation, manipulation, and supernatural coercion better than most.
How to use it
This is the Iron Will value on your sheet — you reference it when resolving actions or choices tied to it.
Example: I check Iron Will if i am unusually stubborn and hard to sway, resisting intimidation, manipulation, and supernatural coercion better than most.