In the Fate series, a Noble Phantasm is a Servant's ultimate ability, representing an aspect of their history/mythology/fiction that makes them famous. It can be either a weapon or a supportive item. While Noble Phantasms have powerful offensive, defensive, or supportive capabilities, it comes with the downside of revealing a Servant's identity to their opponents, thus exposing their potential weaknesses.
This tag refers to when a character is releasing their Noble Phantasm in an image.
