Apocalypse From the Sky

9th-level Conjuration

Casting time: 1 Day
Range: 10 Miles
Components: V, S, M (An artifact, usually one of good perverted to this corrupt use), Corrupt
Duration: Until dispelled
Spell Lists: Artificer, Bard, Cleric, Druid, 6. 🔧Mechanics/Player Classes/Paladin, Sorcerer, Warlock, Wizard

This Spell is from The Book of Vile Darkness

Spells with the Corrupt component are especially immoral and are used to commit such horrible acts that the caster themself must pay a physical or mental price in order to inflict this upon another being.

You call upon the darkest forces in all existence to rain destruction down upon the land. All creatures and objects in the spell's range take 20d6 points of fire, acid or thunder damage or 10d6 points of vile damage (your choice). This damage typically levels forests, sends mountains tumbling, and wipes out entire populations of living creatures. You take half of this damage, in addition to the corruption cost.

The caster calls upon the darkest forces in all existence to rain destruction down upon the land. All creatures and objects in the spell’s area take 10d6 points of fire, acid, or poison damage (caster’s choice), and 10d6 points of necrotic damage. This damage typically levels forests, sends mountains tumbling, and wipes out entire populations of living creatures. The caster takes half of this damage.
In addition, crimson clouds quickly gather overhead, and unleash a horrible rainstorm of blood that covers the area. The blood pours down in thick drops, coating everything in a dark red, sticky mess. Any living, non-evil creature in the area of a rain of blood must succeed at a Constitution save or take a –1 penalty on attack and damage rolls, checks, and saves for 24 hours. Undead, and any evil creatures the caster controls gain a +1 bonus on attack and damage rolls, checks, and saves for 24 hours if they are in the area of the rain, or if they are summoned in the area of the rain.

The caster calls upon the darkest forces in all existence to rain destruction down upon the land. All creatures and objects in the spell’s area take 13d6 of the caster’s choice of cold, fire, acid, lightning, or thunder damage. This damage will level forest, crumble mountains, and wipe out entire populations of living creatures. The caster is subject to the damage of the spell as well. The caster must sacrifice a good-aligned artifact to cast this spell.

You call upon the darkest forces to rain destruction. All creatures and objects in the spell's range take 20d6 points of fire, acid or thunder damage or 10d6 points of vile damage (your choice). You take half this damage yourself. The vile nature of this spell also has a more profound, permanent cost.

Spell Corruption:

Any spellcaster who prepares or knows spells can cast this spell. This spell is aligned with evil due to its origin in the Book of Vile Darkness. If a non-evil creature casts this spell, their alignment shifts toward evil, and they risk corruption. This shift is permanent unless undone by a Greater restoration spell, Wish Spell or similar magic.

To cast this spell, you must expend Hit Dice equal to the spell’s level (3 for Absorb Mind). You may expend additional Hit Dice to improve your corruption check. If you lack sufficient Hit Dice, the spell fails, and you automatically gain a Vile Corruption from the table below. After expending Hit Dice, make a corruption check by rolling a d20 and adding the sum of the expended Hit Dice. Good-aligned casters roll the minimum required Hit Dice (3) with disadvantage, evil-aligned casters roll them with advantage, and neutral casters roll normally. Additional Hit Dice beyond the minimum are rolled normally for all alignments. The Corruption DC is 10 + the spell’s level (DC 13 for Absorb Mind). If the total is less than the DC, the spell succeeds, but you gain a Vile Corruption, determined by rolling a d20 and consulting the Vile Corruption table.