It'd be a great idea if it was a malfunctioning jetpack. One time use, sure to kill. Imagine giving a malfunctioning rocket pack to a NPC.
NPC: cool, is this button the fire button?
PC: Yeah.
NPC: oh boy I always wanted to fly (hits button) I can't wai-AAAHHHHH OMFG ITS OUT OF CONTROL, SOMEONE SAVE ME!!!!! :nuke: