Puts a giant glowing icon with a duration counter in the front and center of your screen when you have Power Infusion, Shadow Trance, Zandalar Hero Charm, or ToEP. Also displays the CD of trinket slot 13, and a cooldown for the PI of the priest.
if you are a priest, it puts a glowing PI icon in the center of the screen for 5 seconds whenever you are in a group and someone sends a tell containing "PI"
NB: this will track the cooldown of ALL pi's cast in the raid as separate icons. if this is too much information on your screen at once, change the trigger settings for the PI cooldown to include Destination Unit: player