You return to the well of Forbidden magic again and again. The temptation to learn and cast the most disgusting and gruesome spells ever devised to make your enemies suffer deliciously proves too great for you to resist, thus you have sunk into the quagmire of wickedness.
The more you revel in the filth of this tradition, the more havoc it wreaks on your body, imposing appalling changes in your mind and flesh. Unstable and thoroughly deranged, you wield your magic with a recklessness that endangers everyone around you, but the injury and insanity afflicted on your companions is a price you’re willing to pay to attain the fullness of your potential.
Level 3 Atrocity
Attributes. Increase two by 1
Characteristics. Health -2, Power +1, Insanity +3, Corruption +1
Languages and Professions You either speak Dark Speech or gain another profession
Magic You discover the Forbidden tradition or you learn one Forbidden spell.
Mark of Darkness You gain a randomly determined Mark of Darkness.
Appalling Casting Whenever you cast a Forbidden spell, you can choose to cast it in an appalling manner. Each creature that can see you and is within short range of you must make a Will challenge roll. On a failure, the creature gains 1 Insanity.
Revel in Darkness When you get a success on an attack roll to attack with a Forbidden spell, you gain a +1d3 bonus to Health that lasts until you complete a rest. If you already have this bonus, the bonus instead increases by 1d3.
Level 6 Atrocity
Characteristic. Health -2, Corruption +1
Magic You learn one Forbidden spell.
Blackened Soul If you have a bonus to your Health from your Revel in Darkness talent, you impose 1 bane on attack rolls made against you by creatures that have 0 Corruption.
Frayed Ends of Sanity You make challenge rolls to avoid gaining Insanity with a number of boons equal to your Power.
Level 9 Master Atrocity
Characteristics. Health -2, Power +1, Corruption +1
Magic You learn one Forbidden spell.
Spreader of Sorrows Once per round, whenever you cause a creature to gain 1 or more Insanity, your attacks for 1 round deal 1d6 extra damage.