Rank 3 Black Furies Gift
The Fury breaks one of her claws off in a wound, imbuing it with all of her killing intent. The claw continues to burrow into her opponent’s flesh, and will not stop until it finds his heart. A wasp-spirit teaches this Gift.
System: Upon making a successful claw attack, the player spends one point of Willpower. The burrowing claw inflicts one automatic level of unsoakable lethal damage each subsequent turn until it either kills the target or is dug out of the wound (a Dexterity + Medicine action, difficulty 7, requiring a turn’s full concentration).
Source: 20th Anniversary Edition