A while ago I wrote about a few effects to protect a Magi’s lab and here are a few more using illusions. Many effects are tricks that won’t fool or dissuade another wizard, but they may abstract the lab enough to make it difficult to navigate.
First it’s worth noting that using charged items might be a valid method for labs which don’t expect frequent incursions. Lesser devices are very good too if their triggering actions are designed to be complimentary.
Secondly – each effect might be presented in an item or spell differently according to the intent of the designer – particularly when considering the effects duration. To avoid too many variants I’ve mocked these effects up using Duration: Concentration. This means that the effects will either be higher level if invented as formulaic spells, or the enchants device will maintain the spell.
An idea from a few years back was an illusion to spin all the images in the room, thereby making navigation and investigation very difficult.
Chamber of Imaginary Chaos
Rego Imagonem 15, R: Touch, D: Concentration, T: Room
The images of the targeted room are broken, blurred, and ruined as they whir chaotically in all directions.
(Base 3, +1 Touch, +1 Conc, +2 Room)
Illusion of the Abandoned Storeroom
Muto Imagonem 5, R: Touch, D: Concentration, T: Room
This effect changes the image of a room and all its contents to appear like a disused storeroom. Dust, cobwebs, ruined furniture, and stacks of old sacks, barrels, or crates replace the images of all items in the room. The specific appearance is chosen by the caster.
As the effect alters the room completely the appearance of large objects can be made to look like walls or counter-tops.
(Base 1, +1 Touch, +1 Conc, +2 Room)
Illusion of the Dangerous Circle
Creo Imagonem 10, R: Touch, D: Ring, T: Individual
This spell creates a visual and auditory illusion of a hermetic circle and allows the caster to tailor what appears to be held inside. The illusory ring may appear separate from the actual ring maintaining the spell, but must still be within it.
(Base 2 for sight and sound, +1 Touch, +2 Ring, +1 moving image)
Hide the Dangerous Circle
Perdo Imagonem 10, R: Touch, D: Concentration, T: Individual
The image of the circle, marking, ring, or ward targeted by this spell is made invisible for the duration of the spell. The spell was intended to assist in using non-permanent circles and rings as part of temporary defensive measures, and allow those measures to also be hidden.
(Base 4, +1 Touch, +1 Conc)
Illusion of the Misplaced Ring
Rego Imagonem 5, R: Touch, D: Concentration, T: Circle
The targeted ring and its contents appears to be up to a pace away from its actual location.
(Base 2, +1 Touch, +1 Conc, +1 moving image)
A nested ring effect where the outer layer is drawn is something quite easy to break like sand and the inner layer is marked in a more permanent material such as chalk.
The first and second ring spells cast on the external layer to stop all noise from exiting the ring, and another effect hides everything in the ring. The internal or second layer creates a huge amount of noise as an alarm.
Physical props could be set to marr the outer circle if they are disturbed, like the opening of a door or window, or an invisible stick being moved by accident.
Illusion of the Screaming Cacophony
Creo Imagonem 5, R: Touch, D: Ring, T: Circle
This spell creates a very loud continuous noise, intended as an alarm.
(Base 1, +1 Touch, +2 Ring, +1 very loud)
This effect is low enough it’s easy to cast spontaneously.
If you like these look for the 350+ more new spells for Ars Magica.