If you're new to Magickal Arts or if you are starting to engage in magick darker or lighter than you're used to, sometimes you can find the side effects of working with Dark Arts to be difficult.
You may have side effects of nightmares, headaches, tension, etc. Usually, these effects dissipate within the first week, or two, of the casting.
I cast a spell to help make the transition far easier, and less eventful for you by evening out the energies around you.
It's a dynamic spell which contributes the amount of dark or light energy, you need to have a level field around you.
Thus, lessening the effects of the acclimation and helping you acclimate more quickly and work with multiple spells at once.