Invocation of Nyx, Greek Goddess of Night

First: Smudge the altar, the candles and yourself with sage. 
Second: Place the Sage on the altar and let it burn out. 
 

If you have the flats of your altar face the four directions then put the four candles on the altar with the blue in the North, red in the South, black just behind the blue, and white in front of the red. Purple should be placed in the middle. 
 

If you have the corners of the altar facing the four directions the place the blue in the North, black in the East, red in the South, and white in the West. Still, the purple should be placed in the middle. 
 

Light the candles in this order regardless of the arrangement: Black, Blue, Red, White, Purple. 
 

Say the following: " Nyx, great Goddess of the Night, lover of Erebus, mother of Moros, Thanatos, Hypnos, Charon, Nemesis, and the Fates, I ask you to accept my loyalty and my love as your follower and servant. I ask for your protection and guidance, bringer of the night, I ask for your wisdom and blessings." 

Re-light the Sage if it burnt out and light up the Sweet Grass. Use the Sweet Grass to smudge the altar, the candles, the rose pedals and yourself. Place the Sweet Grass next to the Sage and let it burn out as you visualize Nyx sending you her protection, wisdom, guidance, and blessing. Once the Sweet Grass and the Sage burn out again let the petals drop from your hands to the gaps between the candles and the herbs as you chant: "I am (your name). I am a Priest/Priestess for my Goddess, you, Nyx, if you will have me. This is my request, and these are my words. May this spell not reverse, my faith never wavers, my love never weakens. Blessings of Nyx, wash over me!"

Honor Nyx with offering and prayer and she will always answer your call.