The Black Pearl has the following: Activate [reaction] envision; Trigger you are targeted by a mental effect.
Terrifying Gaze has the mental trait, does ending your turn within Terrifying Gaze count for this trigger?
https://2e.aonprd.com/Equipment.aspx?ID=3055
Aeon Stones
https://2e.aonprd.com/Monsters.aspx?ID=595
The Terrifying Gaze in question (Thanadaemon)
