Tori Tori no Mi, Model: Valravn

Introduction
The Seirei Seirei no Mi, model: Valravn is a mythical zoan devil fruit, which allows the user to become a Valravn, a supernatural raven said to consume those who die in battle. It was eaten by Samantha Grim.

Usage
Using this fruit, Samantha becomes a Valravn, taking the form of a supernatural raven-like creature, which also has some wolf like characteristics (Valravn were sometimes depicted as being half wolf) The Valravn is depicted as being able to draw power from consuming corpses. As a result of this, Samantha can also gain power by absorbing the dead. This grants her superhuman power, which can be used both offensively and defensively in many ways. Most significantly, she is able to withstand attacks by using this energy to create "armour". However, in this case her power depletes if the armour is attacked. Notably, Samantha has found that she can absorb dead matter to gain the same effects as consuming the dead, including the bones Piotr creates with his own Devil fruit.

Weaknesses
The user suffers from standard Devil Fruit weaknesses. Furthermore, the supernatural power the fruit grants them is entirely dependant on them absorbing the dead, and they are much weaker without this. Using the fruit's powers draws on the energy gained this way, eventually depleting it entirely. Samantha can mitigate this weakness by absorbing bones directly from Piotr, however, unlocking the true potential of the fruit.

Trivia

 * Some depictions of Valravn are able to become knights when they consume the fallen. While Samantha does not appear to have this ability, it is reflected in her ability to create "armour" after consuming dead matter, among other things.