[@Zardoric] Okay, so this is how we handle this. Obviously you have frequency to potency ratio. 

Minor: That has constant use
Nifty: That can be used a few times in a scene
Useful: That can be used one time in a scene
(You actually have 2 other levels but with Adventure Kingdom, they are restricted at this time.)

So, describe what you can actually [i]do[/i] with this ability or determine how often the character uses it.

Vulnerability is intended to be a barrier for the GM to use. The way you have yours constructed, you have chosen to have psychological damage (Trauma) as this block. This means you have chosen to automatically receive damage to your heart points when the situation arises, and I am forced to be fair and not save you by the skin of your teeth if you actually lose it. Are you sure you want to do that? This could also be purchased as intrigue and give you kudos when you play it, but this would also require a different vulnerability.