Sigil of Death

Disintegration, weakening, minus. A Sigil so rare to the point of being unknowingly banned. 

Effect

Can weaken life and accelerate death at it's most basic use. 
Ex) Wounds become infected no matter the treatment. Weaknesses of the body is exploited to the point of causing a downfall. Or sepsis in an otherwise clean wound.

Side/Secondary Effects

With all Sigil use, constant overuse could result in death or turning into something foul as each use drains the user's own life force. However, this Sigil is the easiest to truly master, but, it would result in death of the user.

Manifestation

The engraved item of focus, an Anchor, illuminates as the targeted area reflects the Sigil. It's for a brief moment before the effects take place.

Source

The source of power, like with all Sigils, are with a person's will, stamina, and soul.

Discovery

It was through the Founding 8 that this Sigil was discovered.

Material Components

An Anchor: An item that the user has attuned to and engraved their chosen Sigil on.

Gestures & Ritual

The most basic of mastery requires chanting in order to activate the Sigil, however this is no longer a requirement the more advanced a user: 
Apathy, 
 Tranquility, 
 Enmity, 
 Causes, 
Death!

Effect Duration

Until broken by the user or until fatigue hits.

Effect Casting Time

Until chant ends, or, depending on the level of the user, instantaneous.

Range

The external area of the user, as far as the eye can see.

Applied Restriction

Energy of the user.
Can only be manifested through the use of an Anchor.
Attunement can be broken beyond repair.