Id moss

From NWNWiki

Initial effect: Lowers Intelligence by 1 to 4 (1d4)
Secondary effect: Lowers Intelligence by 2 to 12 (2d6)
Save DC: 14
Handle DC: 11

Id moss is resisted upon contraction if the target makes a successful fortitude saving throw. If the save fails, the initial effect is applied, and one minute later a second saving throw is attempted to avoid the secondary effect.