By Gary Handelman.
This is a whistle made of ARB, with an AI/O optical cable coming out of it. While unplugged, it is a perfectly functional whistle. If you blow it while it's plugged in, everyone, including you, in a radius equal to your Magic in meters around you suffers two points of Impairment for the remainder of the Sequence. Arcanowave-based effects cannot mitigate this impairment.
Abominations and SupernaturalCreatures are particularly susceptible, and are affected for a number of Sequences equal to the outcome.