Substitution Charm (5e)

This magic item is meant to function like the ninja charm thing where you summon a wooden block and disappear, except you try and convince the attacker that you actually died.

Effects
This charm is a small jade bracelet enchanted with abjuration and illusion magic for the purpose of protecting children from harm. The bracelet charges itself automatically by leaching off a safe portion of the wearer's innate magic while they rest.

This bracelet is capable of producing a complex illusion of the wearer twice per short rest.

This illusion can be summoned with a reaction as a means of avoiding damage from a single attack.

(Apply the affects of the spell "Shield" to the wearer for one turn)

After which the user has the option to freely move 5 feet away from the damage source without triggering an opportunity of attack.

After taking a hit, the illusion acquires the physical appearance of having been killed by whatever the damage source it was targeted by.

As long as the illusion is present, the actual person is invisible.

The illusion disappears on the end of the user's next turn, or if a creature attempts and succeeds on a dc 13 investigation check on it.