This ensorcelled musk is typically stored in a round wooden box etched with ornate, evil looking symbols. If objects can be evil, then this fits that bill well.
To use Necromantic Redolence, take a pinch from the box and place it on the upper lip of a dead body, then strike the body hard on the chest to force breath out. This rips the nearest soul back from the beyond, stuffing it into the body. Based on the age and condition of the corpse, the amount of pain felt during this process ranges from extreme to unreal. Once the pain fades and he writing stops, the corpse will animate, bursting with rage. This blinding hatred will drive it to kill anything it lays eyes upon, and will see no logic; the process of instilling a soul stolen from the beyond into an alien form warps the mind, shattering it as the new consciousness grapples with the residue of the old host; often the only survivors are the worst memories of both.
If the body is restricted or caged in some manner, it will heal at one quarter its natural rate, until ‘whole’ (note that magical healing will produce the opposite of the intended effect).
A corpse freshly animated will have no more capacity for reason than your average zombie. Given the time to become physically whole, the mind will also recover, gaining sentience, though the trauma and needs of its new form will result in a creature resembling a ghast. If released, the creature will seek out life to consume and destroy, gaining a bit of power with every life it takes, as well as grow in intellect. Should such a horror ever feast upon a thousand lives, it will ascend in status, transforming into a fiend comparable in power and dread as to a lich.
The animate result of Necromantic Redolence can be slain using the same methods as whichever undead monstrosity it most closely resembles. In addition, it has one significant weakness: an exhaled breath upon its lips will undo the magic that binds it, releasing the trapped soul to return from whence it came. Coming within such close proximity to the creature can prove a significant challenge; it is often easier – not to mention much safer – to slay the monster with conventional means.