Uncontrolled Shapeshifting
Normally, the use of Protean requires conscious effort from the user. Someone suffering from Uncontrolled Shifting, however, finds her body responding to subconscious impulses and her form shifting without her conscious desire. should a Gangrel find herself angry, she grows Talons of the beast; if she fears for her unlife, she assumes Body of Spirit. This not only uses up blood, but can also be embarrasing or downright dangerous (activating Talons of the Beast is the Cainite equivalent of drawing a weapon). Spending a point of Willpower suppresses this for a scene, although especially strong stimuli might still trigger a change (Storyteller's discretion).