This aura is designed to warn you when you reach a certain threat level on your target, or aggro a targeted mob. It also displays your current threat percentage in the middle of the screen.
Requires ThreatClassic2, ThreatPlates or compatible to work (uses LibThreatClassic2).
Be sure to check out the Custom Options tab for setting your preferences. You can reduce "Required target level difference" and "Threat list minimal length" to test it out.
Sound effects can be changed or disabled in Conditions and Actions tabs.