| Reason | Transformation | Extra Info |
| Piper. Was scratched by this creature in Season 1. | |
| Prue. Using a spell to lure a succubuss in Season 2. | |
| Prue. An accidental wish made to a genie. | |
| Prue. Using a spell to track a banshee in Season 3. | |
| Phoebe. Her inner pain over Cole made her vunerable to this creature's scream. | |
| Prue, Piper, and Pheobe. Phoebe found a book in the attic and read an incantation. | |