Traumatic Amnesia
Amnesiac characters blot out some part of their past, perhaps a horrific incident (for example their Embrace) or even a whole period in their lives. The reasons for this memory loss are almost always stress-related, though physical injury may cause a similar effect. Amnesia usually affects just memory, but in some cases, a character may forget some Abilities and be unable to use them.
In order to push past the trauma, the character must roll Stamina + Memory at Difficulty 8 to access the desired ability or memory.