Spirit derives from Scandinavian folklore.
Pesta is a witch that was created after the Black Death hit the Scandinavian countries.
The broom/rake would symbolize the number of deaths in the villages she visited. The rake meant some people would live and the broom meant no one would live.
Forbiddens are very aggressive that can attack everything - including summoner and allies.
Summoning ingredients requires: Black Nightshade and Plague Mask