City Gripped by Blackouts! is a mythos card. It first appeared in the Arkham Horror board game.
Mythos Type: Headline
Gate Opens: Unvisited Isle
Clue Appears At: *Science Building
Mythos Ability: The General Store, Curiositie Shoppe, and Ye Olde Magick Shoppe are closed until the end of next turn. Leave this card in play until then to indicate this.