Mother Hydra - Queen of the Deep Ones
When Mother Hydra is the Herald, place one uprising token on the Deep Ones Rising track at the start of the game and after each time the Feds raid Innsmouth. You must play with the Innsmouth board to use this Herald.
The Lurking Horror
"Swollen like some grotesque fertility idol worshipped by a forgotten tribe of men, the creature was nonetheless able to knife through the waves with terrifying grace and purpose. With a flash of shark teeth and a bloom of red, another sailor died screaming."
If Cthulhu is the Ancient One, his combat rating is improved by -1 (to -7). When Cthulhu awakens, each investigator must lower either his maximum Sanity or maximum Stamina (his choice) by 1 for each Shoggoth or Proto-Shoggoth in play.
King and Queen
Both Father Dagon and Mother Hydra may be used as Heralds during the same game. All of their effects are cumulative with each other. So, for instance, two uprising tokens are placed on the deep Ones rising track at the start of the game and after each time the Feds raid Innsmouth.