Seals a building against solar magic and keeps the solar energy from causing as much discomfort to those within it who are vampires. Also preserves spelled objects form being damaged by the sun.
The caster must aquire a mirror for every window or door in the building. The caster then draws the sigil of "night" or "Shadow" on each mirror in blood and places one at each window and door wih the reflective side facing out. Then he must draw a line of blood around every window, door, crack or other aperture by which sunlight may be admitted in salt water with a few drops of his blood added. The entire time the caster chants a verse like the following:
Daylight shall be here then gone,
My will protects me from the dawn.
This spell lasts until one of the mirrors are removed or the line of blood and salt water around a door is washed or rubbed away.