Nightmare spells can be found on various pages around the site, but I thought it might be handy to have a more collected page of them. So if you're looking for nightmare spells, this can be the place to bookmark.
In the Dark of Night
Originally, this nightmare spell is part of the selection of real black magic spells from another section. This spell will help bring nightmares to another person. The supplies are:
On the paper or material, drawn 3 concentric circles and an x in the middle of the smallest inside circle. Place the dish with a charcoal tablet right on the x, and the candle outside the circles on the left. Light the charcoal and get it burning, put a pinch or two of dried mugwort on it along with a chunk of Dragon's blood. When they are both smoking nicely, light the black candle.
Watch the smoke rising from the dish and picture it floating through space to your intended target. It brings nightmares and fear into their sleep, so picture that scene for several minutes and focus on the person. Repeat their name in your head as you do.
After a few minutes of this concentration, put out the charcoal and switch the dish and candle so the candle is on the x in the center. Leave it until it fully burns down. The person you're targeting will have bad dreams and nightmares starting the next night and it will last for 3 days.
Peaceful Dreams Spell
If your need for a nightmare spell is more about stopping them than causing them, then this water elemental spell can bring a calmer sleep. You'll need to have these supplies:
Fill your bowl with pure water, then add the other ingredients. Give it a stir with your fingers before going to bed. Repeat the lines of the spell:
Bring me quiet
Bring me peace
Ease my dreams
Keep the bowl near your bed while you sleep. It will absorb any negative energies in the room that could be effecting your sleep and dreams. I do have a sleep spells page too that has a few other rituals that can help at bedtime if nightmares aren't your only problem.