Give Me A Seizure - Siri Shortcuts

WARNING: This shortcut may potentially trigger seizures for people with photosensitive epilepsy. User discretion is advised.
This shortcut rapidly flashes the screen by changing the brightness between 0% and 100%. You can choose to set the number of flashes or let the program choose a random duration. Before starting this provides ample warning that the user is about to experience a seizure-inducing effect. This shortcut can be cancelled by muting the device’s volume. Once the process has been completed, the device’s brightness will be returned to what it was before the shortcut was started.