How it works? When the VIX moves more than 12% above or below its 10 DMA the indicator moves
outside the normal range band signaling that the move is overextended. Price action and normal VIX level analysis can be used to verify signal.
When the indicator crosses from above 12% to below it can used as buy/sell signals, but is less reliable.
I am not the creator, I stumbled upon the indicator on a (professional) trading blog