Boardgamegeek https://boardgamegeek.com/boardgameexpansion/229316/zombicide-no-rest-wicked
English - In some places, dark magic seems to permeate the ground itself, corrupting everyone and everything. It can be the consequence of a necromancer ritual, a desecrated sanctuary, or the recent manifestation of otherworldly forces, among others. In such areas, infected animals gather like moths to a flame.