!https://derpicdn.net/img/view/)
>>2019/12/4/2211926__safe_screencap_twilight+sparkle_alicorn_pony_the+beginning+of+the+end_spoiler-colon-s09e01_spoiler-colon-s09e02_ethereal+mane_glowing+eyes_glo.png!
Here you go. (or one of them, at least; "ethereal mane" helps you find it, as a tag)
!https://derpicdn.net/img/view/2014/10/5/
>>736143__safe_screencap_twilight+sparkle_twilight%27s+kingdom_alicorn_animated_electricity_ethereal+mane_female_golden+oaks+library_levitation_magic+ove.gif!
(also did occur in Twilight's Kingdom, I think "[twice":](https://derpicdn.net/img/view/2014/5/11/623425__safe_screencap_twilight+sparkle_twilight%27s+kingdom_alicorn_animated_ethereal+mane_female_glowing+eyes_hub+logo_magic_magic+overload_majestic_.gif) in total)