Demon Blood Serum
Description
Demon Blood Serum appears as a bright red, roiling, and bubbling liquid that seethes with the rage of the Demon it was taken from. When mixed into the bloodstream of a mortal, it attacks the entire body with the will of the Abyss, spreading itself in a matter of seconds. A victim of this foul toxin will potentially end up paralyzed with pain akin to the burning hells festering underneath their skin. If one can survive the experience, they will be severely drained for several days afterwords as their body recovers from the internal damage.
Lore
Demon Blood Serum is considered to be the foulest of poisons, not for its effects necessarily, but more for its nature. The blood must be extracted from the body of a demon and then distilled through a cold-press to control its toxic nature. Even after the blood has left the body of the previous owner, it is still contains the will of the demon, and will attempt to swallow any mortal life it can. Anyone caught with Demon Blood Serum by authorities is most often accused of having ties to the Abyss, and soon after they tend to be executed if they don't have a good story behind it. In fact, there are many prominent Assassin Guilds who forbid use of the toxin, simply because they don't want to draw the level of enmity that the use of such foul weaponry attracts.