Spiritualism in the nineteenth century.
The base of it is they want gods they can bargain with and play off against each other.
You don't bargain with God. There is nothing you can give Him that He needs. You ask and He grants according to His will.
Not as you will it, as He wills it. Which is why "nevertheless not my will but Thine be done" is at the heart of Christianity.
Why did wicca grow so fast in popular culture after 1997?