The Madness of the Jewel King

The Madness of the Jewel King (宝石王の乱心,) is the ability of Ace.

Description
The Madness of the Jewel King allows Ace to change the lifespan of his subordinates into jewels of a similar value. In particular, he provides his men with a special collar with a jewel in it, which cannot be equipped without their own discretion. Upon wearing it on the neck, the collar cannot ever be taken off again. When Ace activates his ability on his target, the jewel on the person's collar illuminates as they eventually dies. Afterwards, jewels of a proportionate "value" to the victim's lifespan will materialize on his palm.

Appearances
{{Ability Appearance
 * Chapters =

The Guild Aftermath Arc

 * Chapter 42 - Sins Granted by the Hand of God
 * -| Episodes =

The Guild Aftermath Arc
}}
 * Episode 29 - My Ill Deeds Are the Work of God

Derivation
The ability is a reference to The Madness of George III, a play by Alan Bennett in 1991. It depicts the life of King George III of United Kingdom and his battle with his mental illness.