Wolf Claws
You are able to grow an inch-long claw on each finger. These claws make excellent weapons in combat and can be used in many attacks. Wounds caused by the claws are especially vicious; indeed, the wounds are aggravated and cannot be healed normally through the use of Blood Points.
No roll need be made; the transformation is automatic and takes but one turn to accomplish. However, one Blood Point must be spent each time the claws are grown. Clarification: Once the BP is spent, the claws are usable at the end of that turn.
Clarification: They only go away when desired. That takes one turn as well.
Clarification: The claws are likely to increase the difficulty of using fine dexterity, such as trying to type on a keyboard or cell phone and the like.