Power Nullification is the ability to nullify another's powers through either supernatural means or even through artificial methods. Certain events can result in a nullification of supernatural power.
Natural users Edit
Unnatural users Edit
A lunar eclipse will nullify a werewolf's power, rendering them human until it ends.
Mistletoe can disrupt the Glamouring ability of a Darach.
Psychological and emotional moods such as extreme guilt can prevent a werewolf from using its powers, specifically their accelerated healing.