The Elder Sign is one of the most powerful cards in the game. The Elder Sign unlocks a Seal. No need for Cultists; on your turn, simply play an Elder Sign on an unoccupied Seal on your Elder God as an Action, and activate your Cosmic Primal Power.
Elder Signs are indicated by the “Elder Sign” label at the bottom of the card, as well as Wax Seals and Ribbons colored Grey.
The Star Elder Sign design © 2022 Chaosium Inc. Used with permission.