It seems there’s a Cthulhu Mythos Tarot, not surprised after all. The four first Major Arcana correspond to the Other Gods, more cosmic forces than single entities: Azathoth, Nyarlathotep, Shub-Niggurath, Yog-Sothoth

Azathoth is the innermost point, the force that binds atoms and particles together.

Yog-Sothoth is the extent of space-time, guardian of the Thresholds and Gates.

Shub Niggurath is the Great Black Mother, giver and devourer of life.

Nyarlathotep is Their messenger and Will, the herald of the chthonian supreme forces.