Trials of a Teenage Werevulture

Lisette was expecting to be a werehawk.  Now she's a werevulture.

Sure, she can still fly, but the garbage looks delicious.  And everyone's afraid of her!  Okay, everyone's afraid of her best friend, too, but her best friend chose to be a banshee.

Then the mysterious Rarity Clan invites her to join.  They offer her friendship, and the ultimate secret: how to be turned a second time so that she could choose a different species instead.  She could be a werehawk, or a vampire, specter, giant, lorelei, or whatever else she pleases.  There's only one catch, and it's a big one.

The tool that's used to do that is a weapon that could destroy the entire city.