Type insanity; Save Will DC 19 Onset 2d6 days Effect –6 penalty on Will saving throws and Wisdom based skill checks; multiple personalities (see below)
This is a complicated disorder that manifests as 1 or more distinct and different personalities within the same body and mind. The number of additional personalities the victim manifests equals the DC of the insanity divided by 10 (round down, minimum of 1 additional personality). Should the insanity worsen in some way (such as by the save DC increasing), the number of additional personalities increases as well. Likewise, the number of additional personalities decreases as the sufferer recovers and the insanity’s DC decreases. The GM should develop these additional personalities. Every morning, and each time the afflicted character is rendered unconscious, he must make a Will save against his insanity’s DC. Failure indicates that a different personality takes over. A character’s memories and skills remain unchanged, but the various personalities have no knowledge of each other and will deny, often violently, that these other personalities exist.
Pathfinder RPG GameMastery Guide, © 2010, Paizo Publishing, LLC; Authors: Cam Banks, Wolfgang Baur, Jason Bulmahn, Jim Butler, Eric Cagle, Graeme Davis, Adam Daigle, Joshua J. Frost, James Jacobs, Kenneth Hite, Steven Kenson, Robin Laws, Tito Leati, Rob McCreary, Hal Maclean, Colin McComb, Jason Nelson, David Noonan, Richard Pett, Rich Redman, Sean K Reynolds, F. Wesley Schneider, Amber Scott, Doug Seacat, Mike Selinker, Lisa Stevens, James L. Sutter, Russ Taylor, Penny Williams, Skip Williams, Teeuwynn Woodruff.