Here is Miasma of Fear 2.0, taking all of the advice from my previous post (https://plus.google.com/101824580455031797035/posts/PWUe59Cr5Tv) into account.
Miasma of Fear
The forest’s dark magic causes fear to seep into your very being. Even those who are normally immune to such feelings recognize a growing sense of dread.
When you enter The Dark Forest or have a few hours of uninterrupted sleep there, hold Courage equal to your WIS. Whenever you narrate an action and roll 6-, in addition to whatever the GM says, lose 1 Courage.
While you’re in The Dark Forest, before rolling for an action you narrated you must Defy Danger with Courage.
On 10+ Your companions are heartened by your steadfastness and they each gain 1 Courage. You may roll for the action you narrated as normal.
On 7-9 You’re rattled but are otherwise fine. You may roll for the action you narrated as normal.
On 6- Your fear has gotten the better of you. Narrate how you flinch or hesitate, causing your action to fail. Do not roll for the action.
Note: Courage is a resource. You may use it up with the terrifying tag, or let a player add to it when healed, or in the presence of a courageous or pure act.You’ll also notice that rolling 6- when you Defy Danger with Courage does not decrease your Courage, because your are not narrating the Defy Danger, it’s compulsory.
Yochai Gal, Colin Kierans, Jeremy Strandberg, David Perry