Close contact with the Abyss or demons clouds your mind and twists your body.

Catalyst

Prolonged contact with Abyssal energies or demons, whether willing or otherwise, has corrupted your soul.

Progression

Demonic corruption thrives in the presence of sin. One could become initially corrupted by demonic influence through being exposed to raw Abyssal energies, accepting one too many profane gifts from a succubus, or using a wish granted by a glabrezu, but the progression of the corruption is often tied to the individual’s most powerful sin. When an opportunity arises to carry out a significant action that matches the corruption’s theme (GM’s discretion), you are tempted to take it. The action might include wanton destruction and violence, or merely tempting someone to behave in a chaotic evil manner. You must succeed at a Will saving throw (DC = 15 + your manifestation level) or succumb to this temptation and perform the action.

What counts as significant is up to the GM. If something prevents you from performing this act, the GM chooses a time over the next week when you’re compelled to otherwise further the cause of chaotic evil.

Corruption Stage 1: The first time you perform a significant act that matches the corruption’s theme, your alignment shifts one step toward chaotic evil (toward evil first, if you aren’t yet evil). Any attempt to raise you from the dead requires a successful caster level check (DC = 15 + double your manifestation level).

Corruption Stage 2: The second time you perform such an act, your alignment shifts to chaotic evil.

Corruption Stage 3: The third time you perform such an act, you become a demonic entity under the GM’s control.

Removing the Corruption

Redemption requires slaying the demon who corrupted you or cleansing the site where you were corrupted.

Manifestations

The following are manifestations of demonic corruption.