Mind Devourer (Potency Conduit) ( https://shadowlands.wowhead.com/spell=338332/mind-devourer ) Mind Blast deals 5.0% increased damage and has a 10% chance to make your next Devouring Plague cost no insanity.
Ranks: 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

Detect when there is a proc and make the bar flash as it would if the insanity threshold was passed for DP (if selected).

Mind Devourer is baseline implemented. Could use more enhancements, e.g. audio notification.

Still need to do Rabid Shadows at some point in the future.