>>42439692
After facing death for the first time, Twilight decides to protect her friends and all options are on the table. The plot device is a crystal shoved in their brains that instantaneously repairs any injury they receive and, at the time, also alicornified them. She initially implants them with force, knowing some of them won't consent. After getting de-corrupted, she undoes all that for the unappreciative ones and de-alicornifies the rest.