Acid Blood Curse

School transmutation; Level 7


Casting Time 8 hours every three months for 1 year (4 phases; no penalty for interruption)
Components V, S, M (rare herbs, spices, and oils worth 100,000 gp)
Skill Checks Craft (alchemy) DC 26, 2 successes; Heal DC 26, 2 successes


Range touch
Target willing or helpless humanoid touched
Duration instantaneous
Saving Throw none; Spell Resistance no


This ritual protects the subject from acid, turning the subject’s blood and bodily fluids highly acidic, which damage and corrode any material they drip upon. The subject gains acid resistance 20, ignoring the first 20 points of acid damage from each attack. The subject’s highly acidic blood damages weapons that penetrate the skin. Creatures that deal damage to the subject with slashing or piercing weapons in melee take 1d6 points of acid damage from blood spatter. Slashing and piercing weapons that damage the subject also take this damage, which ignores hardness.

While these advantages are significant, the disadvantages are why it is called a curse. The victim’s other body fluids are also acidic, though not to the same degree as the victim’s blood. Any sweat will, over time, tatter and ruin all worn clothing, and any saliva will eventually tarnish and destroy eating utensils.

This effect also makes it hard for the victim to have a romantic or social relationship except with another subject of the acid blood curse.

Any armor the victim wears degrades over time, gaining the broken condition after 1d4 weeks of wear and becoming destroyed after twice as long. If the subject is wounded, any worn armor is also exposed to the acid damage. As a result, subjects generally belong to character classes that do not normally wear armor.

The acid blood curse is not normally performed on Okkators other than the masked, because it prevents them from being able to interact easily with society.

Section 15: Copyright Notice

Sandy Petersen’s Cthulhu Mythos, © 2017, Petersen Games; Authors: Sandy Petersen, Arthur Petersen, Ian Starcher.

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