What is the name of the magical creature that resembles a small, winged horse and is invisible to those who have not witnessed death?
Thestral
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> What is the name of the magical creature that resembles a small, winged horse and is invisible to those who have not witnessed death? [/INST] Thestral </s>