School: Chronomancy (Illusion)
(Intended for use with the Chronomancer subclass)

The caster splits the flow of time around a temporal disturbance. This reduces the turbulence it causes and shields it against the efforts of magical detection. A Detect Temporal Anomaly (or an item or ability with the same effect) retains any normal bonus chance of detecting the hidden effect, but its base chance is now lowered to 25%. Other detection spells (True Seeing, Detect Invisibility, etc) also have a 25% chance to detect the anomaly, but those uninitiated in the mysteries of Chronomancy are unlikely to know just what it is they are seeing.

Temporal vortices on the demiplane of time can be hidden in this way, but the forces involved become extremely hazardous. The caster must make a Wisdom ability check with a -4 penalty. Failure destroys the vortex, ages the caster 1d20 years, and reduces the caster's Wisdom permanently by 1 point.  The destruction of a vortex will also create significant amounts of turbulence downstream in the timeline on the demiplane of time, which may attract all manor of unwanted attention from its inhabitants.

The material component is a glass bulb filled with the blood of a Timeweaver Spider. This spell cannot be used cumulatively with itself.

Based on the 2e AD&D spell of the same name, from the Chronomancer suppliment (TSR 9506).