This invication was taken from the Demonic Bible(grimoire). I’d love to hear feedback about how/if it helps with materializing spirits.
Enjoy!
General Invocation for Calling Any of the Spirits
I call all the Forces of Darkness into myself,
Into this body, this temple which I have prepared and set apart to the Dark Lord.
I call all the Forces of Darkness into myself.
For I am the Unholy of Unholies.
I am the Abomination of Abominations.
I am the Devil born flesh upon the earth.
I am the Devil Incarnate upon the earth.
I have crossed the Gates of Hell and I have become the Devil Incarnate.
I am Satan; I am Lucifer; I am Belial; and I am Leviathan.
I call all the Forces of Darkness into myself.
I call all the Forces of Darkness into myself.
N. I invoke thee.
N. I summon thee.
N. I conjure thee.
Come forth, N. and manifest thyself, Within this body, this temple which I have prepared.
Come forth N. and manifest thyself.
Come forth N. and manifest thyself.
(drink from chalice, then say:)
I call all the Forces of Darkness into myself.
I call all the Forces of Darkness into myself.