Can a fairy trick you

(All with their powers):

• Zip their mouths shut/make it so they can't speak for a short amount of time.
• Make them hover/fly with them.
• Make them turn invisible.
• Kill them/Badly injure them.
• (With or without their powers) Depending on who it is, how long they've been with fairies for and who the fairy is, they could make a human go insane after a while.