Game mechanic idea: corruption

Game mechanic idea: "Corruption" is a stat (0 - whatever) that measures the degree to which you have been affected by the blood of the gods. Corruption can be added to at least certain stat or skill checks, at the cost/risk of raising your Corruption. Once Corruption reaches a certain number, its addictive and self destructive nature begins to affect your mind, and you have to make a willpower check NOT to add it to all possible checks, and that willpower check gets harder as the Corruption score gets higher. Once it reaches a certain point, the character dies, or if certain preparations have been made, transforms