Spirit derives from Chilean and Argentine folklore.
Kalku is a Mapuche sorcerer who works with black magic. They are often referred to as machi, to avoid confusion with the malevolent kalku.
A Mapuche kalku is usually an inherited role.
Kalku has servants including Anchimayen (ball lightning) and Chonchon (the more powerful magical manifestation).
Assassins aggressively fights alongside its summoner.
Summoning ingredients requires: Mimosa and Trapelacucha