You can improve the combined CAT of any of your Smother powers by +2 when you use them (to a max CAT of 7 for individual parts), but when you do, you gain the Absentia hook.
When the Absentia hook fills up, you take an injury and black out for a few moments. Roll 1d6; nothing else happens on a 6, but on 1-5 you lose the following body part:
- Eye
- Nose
- Ear
- Finger
- Toe
The lost part simply disappears as though it had never existed, leaving a clean stump or hole in its place. If you rolled a body part that you no longer have for any reason, reduce the result by 1; if this would reduce the result to 0, your head simply disappears as though it had never existed, (unsurprisingly) causing you to suffer instant death.
Missing body parts might make some rolls hard or risky, depending on the current situation, but this only lasts until the end of the current mission - you adjust to any difficulties caused by the missing part in future missions.