I found the insect sound too harsh, so I replaced it with an open source sfx from freesound.org. It now sounds like a spell is being cast. 


To install: 
Backup your Wave Bank.xwb found in Content/XACT.
Replace with the new file. 

If you prefer a different sound, I'm willing to take requests. Enjoy! 

Here's a preview of the new sound: https://freesound.org/people/suntemple/sounds/241809/