Mha quirk ideas

Quirk name-Lullaby

Description- When the user sings,it puts their oponents to sleep.The user can sing any song from opera to Eminem.The amount of time the user sings for will be doubled and that is the amount of the time the oponent(s) will be asleep for.

Weakness-It doesn't work for periods longer than 2 hours otherwise the user will become very weak.