Gotcha. I'm not currently using a hotkey. Also, given the current RBG meta is 3-4 Affy Locks (sometimes no mages at all), I'll have to test it more in Yolo RBGs or Random BGs. That being said, is that something you guys could tweak to have an option for either having it come out right on procs/A burst or if the target is also being stunned/rooted? Basically having a Checked option for one or the other. Something similar to other class burst options that immediately fire the On-Use trinket and other skills (like Bestial Wrath/Crows).
From the games I played, my Crystal was coming out so late despite the team fights starting abruptly, that by the time it did, there was maybe 1 or 2 players in range. So it seemed very wasted for something on a 1.5 min CD, and this was with me immediately selecting the called target over Curse.