The Archive of Esoteric Secrets
8-level Illusion
You channel the dark energies of the Shadowfell through you,
pouring them into the skies above. For the duration a plume of
dark smoke pours from the skull, heavily obscuring a 10-foot
area around the point of the spell’s casting that extends upwards
in a cylinder that reaches the clouds.
Over the course of the spell's duration, the smoke fills the
skies, advancing 1 mile per minute that you concentrate on the
spell, out to a maximum 60-mile radius around you. After every
10 minutes that you concentrate on the spell, a new effect
occurs and persists for the duration of the spell. These effects
are as follows:
10 minutes. All light sources have their range reduced by
half, unless that light source comes from a spell of 6th-level or
higher.
20 minutes. Any dim-light in the area becomes darkness.
30 minutes. The sun is completely covered, stopping any
sunlight from penetrating the smoke. All that can be seen is a
thin corona of sunlight in the sky that has darkened to a
menacing red.
40 minutes. The darkness oppresses the mind, any creature
other than the caster that takes a long rest underneath the
darkness must make a saving throw against Shadowfell Despair
(as detailed on page 52 of the Dungeon Master’s Guide).
50 minutes. All healing received by a creature other than the
caster in the area is halved.
60 minutes. The plume of smoke from the crystal stops, and
spells effects become permanent, persisting in their entirety
until successfully dispelled. You need not concentrate from this
point onwards to maintain the effects of the spell.
If for any reason the spell ends before the duration has
expired, the effects persist for 1d4 + 1 hours, with the effects
disappearing as they appeared, but in reverse order during the
final hour.
Undead creatures are immune to the effects of this spell.
After the effects have been made permanent a creature that
wishes to permanently dispel the darkness must find where it
was first cast, dig up the crystal skull that was buried at the
casting location after the spell’s completion, and cast a success
dispel magic on the skull.